Cisco Talos recently discovered a phishing campaign using an open-source phishing toolkit called Gophish by an unknown threat actor.

*   Cisco Talos recently discovered a phishing campaign using an open-source phishing toolkit called Gophish by an unknown threat actor.  
*   The campaign involves modular infection chains that are either Maldoc or HTML-based infections and require the victim’s intervention to trigger the infection chain.  
*   Talos discovered an undocumented PowerShell RAT we’re calling PowerRAT,  as one of the payloads and another infamous Remote Access Tool (RAT) DCRAT. 
*   We found a few placeholders for base64 encoded PowerShell scripts in the PowerRAT, indicating that the threat actor is actively developing their tools.  

**Victimology **

Talos assesses with high confidence that the threat actor is targeting Russian-speaking users based on the language used in the Phishing emails, luring contents of Malicious documents, a masqueraded HTML webpage of Vkontake (VK), a popular social media application amongst Russian speakers, especially in Russia, Ukraine, Belarus, Kazakhstan, Uzbekistan, and Azerbaijan.  

 

 

**Actor uses Gophish to send phishing emails **

Our analysis of the malicious hyperlinks embedded in the phishing emails disclosed to us the attacker-controlled hosting domains disk-yanbex\[.\]ru delivered the Malicious Microsoft Word document, and an HTML file embedded with the malicious JavaScript.   

The domain disk-yanbex\[.\]ru resolves to the IP address 34\[.\]236\[.\]234\[.\]165, an AWS EC2 instance with the fully qualified domain name ec2-34-236-234-165\[.\]compute-1\[.\]amazonaws\[.\]com, during our analysis. We also observed that the same server 34\[.\]236\[.\]234\[.\]165 was reverse resolving to another domain e-connection\[.\]ru, which also delivered malicious JavaScript-embedded HTML files. Our further analysis of the server 34\[.\]236\[.\]234\[.\]165 disclosed to us that the actor hosted the Gophish toolkit on the server running at port number 3333. Gophish is an Open-Source easy-to-deploy phishing toolkit that is developed to conduct security awareness training according to the tool’s developer.  

Attacker hosting Gophish.

Talos analysis of the phishing email sample’s header showed us that the email was first delivered from server 34\[.\]236\[.\]234\[.\]165, indicating that the threat actor is misusing the Gophish framework in this campaign to deliver phishing emails to their targets.   

Sample Phishing email header. 

**Multi-modular Campaign delivers PowerRAT and DCRAT  **

The campaign has two initial attack vectors, one based on malicious Word documents and another based on HTML files containing malicious JavaScript. Upon activation, these would lead to the download and activation of PowerRAT or DCRAT depending on the initial vector. Both the attack chains require user intervention to trigger the infections on the compromised machines. 

**Maldoc-based infection delivers PowerRAT **

When a victim opens the Microsoft Word document and enables the view contents button displayed in the document banner, the malicious VB macro program executes.  

The macro program initially executes a function that decodes or translates specific encoded symbols in the lure contents of the Word document into their corresponding characters from another alphabet in Cyrillic, transforming the lure contents into readable form. 

We spotted a base64 encoded data blob on the third page of the Word document and the actor used the text color the same as that of the document's default background color, hiding them from the victim’s view.  

To identify the hidden encoded data, the macro executes a function that searches for specific strings such as “DigitalRSASignature:” and “CHECKSUM” in the content section of the Word document, and when found, it copies the data following the search strings to an array.  

To decode the base64 encoded data blob, the actor uses a custom function called CheckContent() in the macro. It removes any “=” characters which are the padding characters in the encoded data blob and decodes them into two parts in a byte array. The first part is the contents of a malicious HTML application (HTA) file and the second is a PowerShell loader.  

The macro drops the decoded contents of the malicious HTA file to “UserCache.ini.hta” and the PowerShell loader into “UserCache.ini” in the victim machine's current user profile folder.   

The actor has abused the Windows NT current version autorun registry key called “LOAD”. The registry key “HKEY\_CURRENT\_USER\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LOAD” is used by Windows to automatically launch applications or processes when a user logs into their account. Specifically, this key stores information about programs that are set to load upon user login. It works similarly to other startup mechanisms in Windows (such as the Startup folder or the Run registry keys), but this specific key is less commonly used. The macro after dropping the malicious HTA and the PowerShell loader script in the victim machine user profile folder, it configures the registry key “HKEY\_CURRENT\_USER\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\LOAD” with the value “C:\\Users\\<Username>\\UserCache.ini.hta”. 

Finally, the macro checks if there are any headers in the Word documents and deletes the contents of the headers from all sections of the Word document.  

The malicious HTA “UserCache.ini.hta” is executed through the LOAD registry key when a victim logs into the machine. It drops a JavaScript called “UserCacheHelper.lnk.js” in the victim machine user profile folder and writes a single line code embedding with a PowerShell command to execute the dropped PowerShell Loader masquerading as “UserCache.ini” file. The HTA file executes the JavaScript “UserCacheHelper.lnk.js” using the LOLbin “cscript.exe”. 

Sample of malicious HTA file.

The dropped JavaScript “UserCacheHelper.lnk.js” loads the contents of the “UserCache.ini” and executes it using the Invoke-Expression PowerShell command. The PowerShell Loader script masquerading as the INI file contains base64 encoded data blob of the payload PowerRAT, which decodes and executes in the victim’s machine memory.   

Sample PowerShell Loader script embedded with PowerRAT.

**PowerRAT expands the attack vector for further infections  **

Talos discovered a new PowerShell remote access tool as one of the payloads in this campaign we are calling PowerRAT that executes in the victim’s machine memory. It has the functionality of executing other PowerShell scripts or commands as directed by the C2 server, enabling the attack vector for further infections on the victim machine.   

The PowerRAT that executes in the victim machine memory initially checks if the JavaScript “UserCacheHelper.lnk.js” exists in the user profile folder and if not found, it will reinfect the victim machine by performing the actions of the PowerShell loader script described in the previous section. Then it hides the “UserCache.ini” by modifying the file attributes to “Hidden”. 

The PowerRAT performs reconnaissance on the victim’s machine by executing a function GetID() which collects the username, computer name, and the system driver letter through the PowerShell command Get-CimInstance. It also collects the drive serial number through the win32\_volume class of WMIobject.  The collected data is written to memory in the format <Computername\_Username\_drive serial number>. 

After performing the reconnaissance, the PowerRAT attempts to connect to the C2 server by sending the collected data of the victim’s machine using a hardcoded URL through the HTTP GET method.  The C2 servers identified in this campaign are 94\[.\]103\[.\]85\[.\]47 located in Russia with the ASN 48282 of Hosting Technology LTD and 5\[.\]252\[.\]176\[.\]55 also geographically located in Russia with the ASN 39798 of MivoCloud SRL.  

When there is no response from the C2 server, the PowerRAT has a placeholder function called offlineworker() that has the functionality to decode an embedded base64 encoded string of a PowerShell script and executes it using the Invoke-Expression command. The actor has built this functionality to keep the infection alive in the victim machine even if the victim's environment detects the malicious C2 traffic and blocks the connection. We didn’t see any embedded base64 encoded strings in the PowerRAT sample that we analyzed and is likely a placeholder, indicating that the actor is actively developing and updating their tools.  

The PowerRAT generates a random number between 7 - 23 and pauses its execution for (300 + random number) seconds and re-attempts to connect to the C2 server continuously waiting for a response. During our analysis, the C2 servers were not responding, and still, our further analysis of the PowerRAT showed us that the C2 server will likely respond with an XML configuration file having multiple modules with embedded base64 encoded PowerShell commands or scripts.   

The PowerRAT has the functionality to parse the received XML file and search for the sections called config.  It periodically executes the embedded encoded PowerShell commands or scripts, according to their defined intervals and run limits. The PowerRAT continues to run until all commands or scripts in the config sections are executed the required number of times.   

**HTML-based infection delivers DCRAT **

Talos discovered that the threat actor is also using HTML files embedded with malicious JavaScript in this campaign that are delivered to the victims through the malicious links in the phishing email, leading to the infection of the DCRAT payload.  

When a victim clicks on the malicious link in the phishing email, a remotely located HTML file containing the malicious JavaScript opens in the victim machine’s browser and simultaneously executes the JavaScript. The JavaScript has a base64 encoded data blob of a 7-ZIP archive of a malicious SFXRAR executable. It decodes the embedded base64 encoded data blob into binary data blob with the type “application/octet-stream” in the memory. A download URL for the binary data blob is created using the URL.createObjectURL() method and assigned to a variable in memory. It calls the click() method on the URL of the binary data blob which triggers the download of the binary data to a 7-Zip archive file. The malicious 7-Zip archive masquerades as the VK messenger application archive file in one of the malicious HTML files and another with a Russian name. The actor is using this technique in the JavaScript function to masquerade as the actual download activity of a file over the internet through a browser.  

A victim must inflate the 7-Zip archive manually to run the SFXRAR executable which is masquerading as the legitimate VK application executable which leads to DCRAT infection. The SFX RAR executable is packaged with the malicious loader or dropper executables, batch file, and a decoy document in some samples.  

When a victim runs the SFX executable, the SFX script drops the packaged files into a folder and executes the batch file which runs another password-protected SFXRAR with the hardcoded password “riverdD” and runs the DCRAT.   

In another sample, we observed that the SFXRAR drops the GOLoader and the decoy document Excel spreadsheet in the victim machine user profile applications temporary folder and runs the GOLoader along with opening the decoy document.   

Talos observed an overlap of the technique used by the threat actor in this campaign with an earlier SparkRAT attack reported by Hunt researchers in April 2024, indicating that SparkRAT is another payload in the threat actor’s arsenal. 

**GOLoader downloads and runs the DCRAT **

In DCRAT infection, the SFX script runs a malicious Loader executable and simultaneously opens a decoy document. The malicious loader executable we are calling “GOLoader” is compiled in Golang. It modifies the configuration settings for Microsoft Defender Antivirus, specifically by excluding the root directory “C:\\” and the folder “C:\\Users\\$user\\Desktop” in the victim machine by executing the PowerShell commands.  

powershell -Command Add-MpPreference -ExclusionPath 'C:\\Users\\$user\\Desktop'

powershell -Command Add-MpPreference -ExclusionPath 'C:\\'

After configuring the exclusion paths, the GOLoader downloads the DCRAT binary data stream from a remote location through a hardcoded URL and writes it into a dropped executable with the file name “file.exe” in the desktop folder on the victim’s machine. During our analysis, we found that the remote location URL hardcoded in the GOLoader was pointing to a GitHub repository, which was not accessible. However, we found that the hosted payload binary in the GitHub repository is the Dark Crystal RAT (DCRAT) binary based on open-source intelligence data.   

**Threat actor delivers DCRAT **

The payload Dark Crystal RAT (DCRAT) sample that we analyzed in this campaign is a modular RAT associated with plugins to perform the DLL injection and information stealing tasks.  

Key features of the DCRAT sample of this campaign include: 

*   Provides remote control access to the victim machine to the actor who can execute arbitrary commands, manage files, and monitor user activities.  
*   It has the capability of downloading and executing other files on the victim's machine. 
*   With its stealer plugin modules, the RAT can steal sensitive information including credentials, files, and financial information from the victim's machine.  
*   The RAT can take screenshots and capture the keystrokes on the victim's machine. 
*   We found that the RAT creates multiple copies of its binary masquerading as legitimate Windows executables including csrss.exe, dllhost.exe, taskhostw.exe, and winlogon.exe in the folders such as ProgramData, Pictures, Saved Games, and Windows start menu. It drops the embedded modules in the administrator user desktop folder using random file names and with the “.log” file extension.  

C:\\Users\\admin\\Desktop\\zaHrebVC.log

C:\\Users\\admin\\Desktop\\HQLYdHol.log

C:\\Users\\admin\\Desktop\\qJutJUJW.log

C:\\Users\\Default\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\taskhostw.exe

C:\\ProgramData\\dllhost.exe

C:\\Users\\Default\\Pictures\\csrss.exe

C:\\Users\\Default\\Saved Games\\winlogon.exe

*   It establishes persistence on the victim machine by creating several Windows tasks to run at different intervals or during the Windows login process. 

Task Scheduler Commands

schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 11 /tr "'C:\\Users\\Default\\Saved Games\\winlogon.exe'" /f

schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\\Users\\Default\\Saved Games\\winlogon.exe'" /rl HIGHEST /f

schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 5 /tr "'C:\\Users\\Default\\Saved Games\\winlogon.exe'" /rl HIGHEST /f

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 12 /tr "'C:\\Users\\Default\\Pictures\\csrss.exe'" /f

schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\\Users\\Default\\Pictures\\csrss.exe'" /rl HIGHEST /f

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\\Users\\Default\\Pictures\\csrss.exe'" /rl HIGHEST /f

schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 11 /tr "'C:\\Users\\Public\\dllhost.exe'" /f

schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\\Users\\Public\\dllhost.exe'" /rl HIGHEST /f

schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 12 /tr "'C:\\Users\\Public\\dllhost.exe'" /rl HIGHEST /f

schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 8 /tr "'C:\\Users\\All Users\\dllhost.exe'" /f

schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\\Users\\All Users\\dllhost.exe'" /rl HIGHEST /f

schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 11 /tr "'C:\\Users\\All Users\\dllhost.exe'" /rl HIGHEST /f

schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 6 /tr "'C:\\Users\\Default\\Start Menu\\taskhostw.exe'" /f

schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\\Users\\Default\\Start Menu\\taskhostw.exe'" /rl HIGHEST /f

schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 10 /tr "'C:\\Users\\Default\\Start Menu\\taskhostw.exe'" /rl HIGHEST /f

schtasks.exe /create /tn "filef" /sc MINUTE /mo 13 /tr "'C:\\Users\\admin\\AppData\\Local\\Temp\\file.exe'" /f

schtasks.exe /create /tn "file" /sc ONLOGON /tr "'C:\\Users\\admin\\AppData\\Local\\Temp\\file.exe'" /rl HIGHEST /f

schtasks.exe /create /tn "filef" /sc MINUTE /mo 9 /tr "'C:\\Users\\admin\\AppData\\Local\\Temp\\file.exe'" /rl HIGHEST /f

*   The RAT communicates to the C2 server through a URL hardcoded in the RAT configuration file as shown in the picture and exfiltrates the sensitive data collected from the victim machine. From other DCRAT samples identified in this campaign, we found another C2 URL “hxxp\[://\]cr87986\[.\]tw1\[.\]ru/L1nc0In\[.\]php”.  

Sample of DCRAT configuration file. 

****Coverage** **

Cisco Secure Endpoint (formerly AMP for Endpoints) is ideally suited to prevent the execution of the malware detailed in this post. Try Secure Endpoint for free here. 

Cisco Secure Web Appliance web scanning prevents access to malicious websites and detects malware used in these attacks. 

Cisco Secure Email (formerly Cisco Email Security) can block malicious emails sent by threat actors as part of their campaign. You can try Secure Email for free here. 

Cisco Secure Firewall (formerly Next-Generation Firewall and Firepower NGFW) appliances such as Threat Defense Virtual, Adaptive Security Appliance and Meraki MX can detect malicious activity associated with this threat. 

Cisco Secure Malware Analytics (Threat Grid) identifies malicious binaries and builds protection into all Cisco Secure products. 

Umbrella, Cisco's secure internet gateway (SIG), blocks users from connecting to malicious domains, IPs and URLs, whether users are on or off the corporate network. Sign up for a free trial of Umbrella here. 

Cisco Secure Web Appliance (formerly Web Security Appliance) automatically blocks potentially dangerous sites and tests suspicious sites before users access them. 

Additional protection with context to your specific environment and threat data are available from the Firewall Management Center. 

Cisco Duo provides multi-factor authentication for users to ensure only those authorized are accessing your network. 

Open-source Snort Subscriber Rule Set customers can stay up to date by downloading the latest rule pack available for purchase on Snort.org. Snort SIDs for this threat are 63963 – 63970, 63971 and 301004. 

ClamAV detections are also available for this threat: 

Win.Downloader.RustAgent-10036537-0 

Win.Downloader.RustAgent-10036538-0 

Win.Downloader.RustAgent-10036539-0 

Win.Downloader.GoAgent-10036540-0 

Win.Backdoor.PowershellRAT-10036541-0 

Win.Phishing.VbsAgent-10036542-0 

Win.Phishing.JsAgent-10036543-0 

Win.Loader.PowershellLoader-10036544-0 

Win.Loader.HtaAgent-10036545-0 

Win.Loader.DonutLoader-10036546-0

**IOCs **

IOCs for this research can be found in our GitHub repository here.

Threat actor abuses Gophish to deliver new PowerRAT and DCRAT

As the Akira ransomware group continues to evolve its operations, Talos has the latest research on the group's attack chain, targeted verticals, and potential future TTPs.

Akira ransomware continues to evolve

Plus, a zero-day vulnerability in Qualcomm chips, exposed health care devices, and the latest on the Salt Typhoon threat actor.

Thursday, October 17, 2024 14:00

When I first interviewed with Joel Esler for my position at Cisco Talos, I remember when the time came for me to ask questions, one thing stood out. I asked what resources were available to me to learn about cybersecurity, because I was totally new to the space.  

His answer: The people. When I asked that question, Joel told me that the entire office was a library for me. He told me to just ask as many questions as I could. 

Coming from journalism, where I was reporting on a range of topics from local government, finance and banking, art and culture, and sports, cybersecurity was totally new to me. Now almost seven years later, I’ve been able to host a podcast that went nearly 200 episodes, relaunch a cybersecurity newsletter, researched malicious Facebook groups trading stolen personal information, and I’ve even learned how to write a ClamAV signature. 

Unfortunately, this week is my last at Talos, but far from my last in cybersecurity. I’m off to a new adventure, but I wanted to take the space here to talk about what I’ve learned in my career at Talos.  

I think that this is a good lesson for anyone reading this: If you want to work in cybersecurity, you can, no matter what your background or education is. I’ve met colleagues across Talos who previously studied counterterrorism operations, German and Russian history, and political science. And I walked into my first day on the job knowing next to nothing about cybersecurity. I knew I could write, and I knew I could help Talos tell their story (and clean up the occasional passive voice in their blog posts). But I had never heard of a remote access trojan before.  

I hope these lessons resonate with you, your team, or the next person you think about hiring into the cybersecurity industry.  

1.  **You can’t do any of this without people.** This has become extraordinarily relevant this year with the advent of AI. I personally have beef with the term “AI” anyway because we’ve been using machine learning in cybersecurity for years now, which is essentially what we’re using the “AI” buzzword to mean now. But at the end of the day, people are what makes cybersecurity detection work in the first place. If you don’t have a team that’s ready to put in the work necessary to write, test and improve the intelligence that goes into security products (AI or not), you’re doomed. Any of these tools are only as good as the people who put the information into them. I’ve been beyond impressed with the experience, work ethic, and knowledge that everyone in Talos has. They are what makes the engine run, and none of this would work without them. 
2.  **You can carve out your own niche in cybersecurity.** That said, you don’t have to know how to code to work in cybersecurity if you don’t want to. Anyone can carve out their own niche in the space with their own skillset. I still barely know how to write Python, but I’ve been able to use the skills that I do have (research, writing, storytelling, audio editing, etc.) to carve out my space in cybersecurity. I can speak intelligently about security problems and solutions with my colleagues without needing to know how to reverse-engineer a piece of malware. And even on the technical side of things, everyone can carve out their own specialty. Talos has experts on email spam, and even specific types of email spam, that their colleagues may not know anything about. Others specialize in certain geographic areas because they can speak the language there and can peel back an additional layer that non-native speakers can’t.  
3.  **Be a sponge.** Going back to the opening of this week’s newsletter, I needed to ask hundreds of questions in my first few months at Talos. It took me a good amount of time to get over my fear of looking stupid, and that held me back early on from having more intelligent conversations with my teammates because I would keep questions inside or just assume that Google had the right answers. No matter how many years you’ve been in the security space, there is always something new to learn. Never assume you know everything there is to know on a given topic. If you are a sponge for information, you never know what new skills you can pick up along the way. When I graduated from college with a journalism degree, I never would have believed you if you told me at the time that I’d be needing to understand how atomic clocks keep power grids running. But here we are. 

The Threat Source newsletter will be off for a few weeks while it undergoes a revamp, and it’ll be back with a new look.  

I want to thank everyone who has enabled me to grow and shape this newsletter over the years, growing it to thousands of subscribers. And, of course, thanks to the readers who have engaged, read and shared over the years.  

**The one big thing **

Cisco Talos has observed a new wave of attacks active since at least late 2023, from a Russian-speaking group we track as “UAT-5647” against Ukrainian government entities and unknown Polish entities. The latest series of attacks deploys an updated version of the RomCom malware we track as “SingleCamper.” This version is loaded directly from the registry into memory and uses a loopback address to communicate with its loader. 

**Why do I care? **

UAT-5647 has long been considered a multi-motivational threat actor performing ransomware and espionage-oriented attacks. However, in recent months, it has accelerated its attacks with a clear focus on establishing long–term access for exfiltrating data of strategic interest to it. UAT-5647 has also evolved its tooling to include four distinct malware families: two downloaders we track as RustClaw and MeltingClaw, a RUST-based backdoor we call DustyHammock, and a C++-based backdoor we call ShadyHammock. 

**So now what? **

Cisco Talos has released several Snort rules and ClamAV signatures to detect and defend against the several malware families that UAT-5647 uses.  

**Top security headlines of the week **

**Government and security officials are still unraveling what to make of recent revelations around multiple Chinese-state-sponsored actors infiltrating U.S. networks.** Most recently, Salt Typhoon was unveiled as a new actor that may have accessed foreign intelligence surveillance systems and electronic communications that some ISPs collect. like Verizon and AT&T collect based on U.S. court orders. The actor reportedly accessed highly sensitive intelligence and law enforcement data. This followed on reports earlier this year of other Chinese state-sponsored actors Volt Typhoon and Flax Typhoon, which targeted U.S. government networks and systems on military bases. One source told the Wall Street Journal that the latest discovery of Salt Typhoon could be “potentially catastrophic.” The actor allegedly gained access to Verizon, AT&T and Lumen Technologies by exploiting systems those companies use to comply with the U.S. CALEA act, which essentially legalizes wiretapping when required by law enforcement. (Axios, Tech Crunch) 

**Chip maker Qualcomm says adversaries exploited a zero-day vulnerability in dozens of its chipsets used in popular Android devices.** While few details are currently available regarding the vulnerability, CVE-2024-43047, researchers at Google and Amnesty International say they are working with Qualcomm to remediate and responsibly disclose more information. Qualcomm listed 64 different chipsets as being affected by the vulnerability, including the company’s Snapdragon 8 mobile platform, which is used many Android phones, including some made by Motorola, Samsung and ZTE. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) also added the issue to its Known Exploited Vulnerabilities catalog, indicating they can confirm it’s been actively exploited in the wild. Qualcomm said it issued a fix in September, and it is now on the device manufacturers to roll out patches to their customers for affected devices. (Android Police, Tech Crunch) 

**As many as 14,000 medical devices across the globe are online and vulnerable to a bevy of security vulnerabilities and exploits, according to a new study.** Security research firm Censys recently found the devices exposed, which “greatly raise the risk of unauthorized access and exploitation.” Forty-nine percent of the exposed devices are located in the U.S. America’s decentralized health care system is largely believed to affect the amount of vulnerable devices, because there is less coordinaton to isolate the devices or patch them when vulnerabilities are disclosed, unlike countries like the U.K., where the health care system is solely organized and managed by the government. The Censys study found that many of the networks belonging to smaller health care organizations used residential ISPs, making them inherently less secure. Others set up devices and connected them to the internet without changing the preconfigured credentials or leaving their connections unencrypted. Others had simply been misconfigured. Open DICOM and DICOM-enabled web interfaces that are intended to share and view medical images were responsible for 36 percent of the exposures, with 5,100 IPs hosting these systems. (CyberScoop, Censys) 

**Can’t get enough Talos? **

*   Attackers Delight: Why Does Healthcare See So Many Attacks? 
*   Ghidra data type archive for Windows driver functions 
*   Protecting major events: An incident response blueprint 

**Upcoming events where you can find Talos**

**MITRE ATT&CKcon 5.0** **(Oct. 22 - 23)** 

_McLean, Virginia and Virtual_

Nicole Hoffman and James Nutland will provide a brief history of Akira ransomware and an overview of the Linux ransomware landscape. Then, morph into action as they take a technical deep dive into the latest Linux variant using the ATT&CK framework to uncover its techniques, tactics and procedures.

**it-sa Expo & Congress** **(Oct. 22 - 24)** 

_Nuremberg, Germany_

**White Hat Desert Con** **(Nov. 14)** 

_Doha, Qatar_

**misecCON** **(Nov. 22)** 

_Lansing, Michigan_

Terryn Valikodath from Cisco Talos Incident Response will explore the core of DFIR, where digital forensics becomes detective work and incident response turns into firefighting.

**Most prevalent malware files from Talos telemetry over the past week **

_There is no new data to report this week. This section will be overhauled in the next edition of the Threat Source newsletter._

What I’ve learned in my first 7-ish years in cybersecurity

By Dmytro Korzhevin, Asheer Malhotra, Vanja Svajcer and Vitor Ventura. 


Cisco Talos has observed a new wave of attacks active since at least late 2023, from a Russian speaking group we track as “UAT-5647”, against Ukrainian government entities and unknown Polish entities. 
UAT-5647 is also known

UAT-5647 targets Ukrainian and Polish entities with RomCom malware variants

Go behind the scenes with Talos incident responders and learn from what we've seen in the field.

Wednesday, October 16, 2024 08:51

Ensuring the cybersecurity of major events — whether it’s sports, professional conferences, expos, inter-government meetings or other gatherings — is a complex and time-intensive task.  

It requires a comprehensive approach and collaboration among various stakeholders, including vendors, hospitality teams, and service providers, to establish a consistent cybersecurity strategy across the entire event ecosystem. 

In our latest version of the “Protecting major events: An incident response blueprint” whitepaper, Cisco Talos Incident Response outlines the essential steps organizations should take to secure any major event. This paper highlights 13 critical focus areas that will guide organizing committees and participating businesses, offering key questions and actionable answers to help ensure robust event security.

Protecting major events: An incident response blueprint

Rather than setting a regular cadence for changing passwords, users only need to change their passwords if there is evidence of a breach.

Thursday, October 10, 2024 14:00

Say goodbye to the days of using the “@” symbol to mean “a” in your password or replacing an “S” with a “$.” 

The U.S. National Institute of Standards and Technology (NIST) recently announced new guidelines for the ways website and organizations should handle password creation and management that will do away with many of the “common sense” things we’ve thought about passwords for years now.  

Here is a tl;dr version of what these proposed guidelines say: 

*   Passwords need to be at least eight characters long, and sites should have an additional recommendation to make them at least 15 characters long. 
*   Credential service providers (CSPs) should allow users to make their passwords as long as 64 characters. 
*   CSPs should allow ASCII and Unicode characters to be included in passwords. 
*   Rather than setting a regular cadence for changing passwords, users only need to change their passwords if there is evidence of a breach. 
*   There should not be requirements to implement a certain number of numbers or special characters into passwords. (Ex., “Password12345!”) 
*   Do away with knowledge-based authentication or security questions when selecting passwords. (Think: “What was the name of your college roommate?”) 

Now, we should make a few things here clear. Just because NIST is proposing these doesn’t mean anyone \*has\* to abide by them, these are merely guidelines that some of the larger tech companies in the U.S. can choose to adopt. And these are proposed rules for the time being, meaning the public and tech companies have time to weigh in on the matter before they are codified in any way. 

While these proposals may seem counterintuitive, it should make traditional text-based login credentials more manageable for users and admins. Studies have shown that requiring a mixture of special characters and numbers has led users to create easier-to-guess passwords like “$ummer2024!” or “P@ssword”.  

And policies that require users to change their passwords often have led them to create passwords that are neigh-impossible to remember, so users end up storing these passwords in easy-to-locate places near their computers, like on a physical piece of paper or saved to a .txt file on their desktop.  

The hope from NIST is that enforcing longer passwords will make it harder for adversaries to guess and less intimidating for users to manage their passwords. 

Of course, using a third-party password manager is usually the most secure option for anyone. But what NIST is proposing is still a step in the right direction, and if nothing else will make those of us who are more security-minded have a better time when creating a new account.  

**The one big thing **

The largest Microsoft Patch Tuesday since July includes two vulnerabilities that have been exploited in the wild and three other critical issues across the company’s range of hardware and software offerings. October’s monthly security update from Microsoft includes fixes for 117 CVEs, the most in a month since July’s updates covered 142 vulnerabilities. The two vulnerabilities that Microsoft reports have been actively exploited in the wild and are publicly known are both rated as only being of “moderate” severity.   

**Why do I care? **

CVE-2024-43572 is a remote code execution vulnerability in the Microsoft Management Console that could allow an attacker to execute arbitrary code on the targeted machine. Microsoft’s security update will prevent untrusted Microsoft Saved Console (MSC) files from being opened to protect users against adversaries trying to exploit this vulnerability. The other vulnerability that was exploited in the wild in this week’s security update is CVE-2024-43573, a platform spoofing vulnerability in Windows MSHTML. Platform spoofing vulnerabilities usually allow an adversary to gain unauthorized access to an environment by disguising themselves as a trusted source.   

**So now what? **

Talos is releasing a new Snort rule set that detects attempts to exploit some of them. Please note that additional rules may be released at a future date and current rules are subject to change pending additional information. Cisco Security Firewall customers should use the latest update to their ruleset by updating their SRU. Open-source Snort Subscriber Rule Set customers can stay up to date by downloading the latest rule pack available for purchase on Snort.org. The rules included in this release that protect against the exploitation of many of these vulnerabilities are 64083 - 64086, 64089, 64090, 64111 and 64112. There are also Snort 3 rules 301034 - 301036 and 301041. 

**Top security headlines of the week  **

**Chinese state-sponsored actors are suspected to have breached several U.S. telecommunications providers to spy on U.S. government phone calls.** AT&T, Verizon and Lumen may have all been victims of the alleged counter-spying operation from the newly named APT Salt Typhoon. The actor potentially accessed information from systems that the U.S. government uses for court-authorized network wiretapping requests, all in the name of trying to steal government secrets. Though it’s still unclear how long Salt Typhoon had access to these networks, it’s clear they at least spent a few months on these networks, commonly used to cooperate with lawful U.S. requests for communication data. The attackers may have also accessed large amounts of other generic internet traffic through this operation. A separate Chinese APT known as Volt Typhoon became a major topic of conversation earlier this year for allegedly trying to infiltrate networks at U.S. military bases and other critical infrastructure sites. (Wall Street Journal, Washington Post) 

**Microsoft and the U.S. Department of Justice announced they had deactivated more than 60 domains and other attacker infrastructure associated with the Russian state-sponsored ColdRiver group.** ColdRiver is believed to be connected to Russia’s Federal Security Bureau (FSB) and recently has targeted non-governmental organizations, think tanks, military officials and intelligence officials in Ukraine and NATO countries. "The Russian government ran this scheme to steal Americans' sensitive information, using seemingly legitimate email accounts to trick victims into revealing account credentials," U.S. Deputy Attorney General Lisa Monaco stated during the announcement of the disruption. ColdRiver (aka Callisto Group, Seaborgium and Star Blizzard) has been active since at least 2017. The U.S. State Department is now also offering up to a $10 million reward for any information that could help locate or identify any individual members of ColdRiver. (Security Magazine, Bleeping Computer) 

**With genetic testing company 23AndMe floundering, customers are left wondering what could happen to their personal information if the company goes bankrupt or goes out of business altogether.** 23AndMe, known for collecting DNA samples from customers and then providing them with a report about their ancestry, has lost millions of dollars in its valuation and stock price over the past few years.  However more than 15 million individuals have submitted their DNA to the company since it was founded in 2006, and privacy advocates are warning them to manually delete their data now before anything happens to the company. The company also has several data-sharing agreements with other private companies, which use 23AndMe data to conduct other studies and research. And because 23AndMe’s services do not fall under health care in the U.S., the company does not have to adhere to traditional HIPAA rules. Last year, the company was hit with a massive data breach that it said affected 6.9 million customer accounts, including 14,000 people who had their passwords stolen. U.S. law enforcement has also tried to access the company’s data in the past (requests that have been declined), and it is unclear if those requests would be allowed should the company no longer exist. (NPR, Business Insider) 

**Can’t get enough Talos? **

*   Cisco Talos: Advanced intelligence for global cyberthreats 
*   New MedusaLocker Ransomware Variant Deployed by Threat Actor 
*   MedusaLocker ransomware variant paired with ‘paid\_memes’ toolkit 
*   Vulnerability in popular PDF reader could lead to arbitrary code execution; Multiple issues in GNOME project 

**Upcoming events where you can find Talos**

**MITRE ATT&CKcon 5.0** **(Oct. 22 - 23)** 

_McLean, Virginia and Virtual_

Nicole Hoffman and James Nutland will provide a brief history of Akira ransomware and an overview of the Linux ransomware landscape. Then, morph into action as they take a technical deep dive into the latest Linux variant using the ATT&CK framework to uncover its techniques, tactics and procedures.

**it-sa Expo & Congress** **(Oct. 22 - 24)** 

_Nuremberg, Germany_

**White Hat Desert Con** **(Nov. 14)** 

_Doha, Qatar_

**misecCON** **(Nov. 22)** 

_Lansing, Michigan_

Terryn Valikodath from Cisco Talos Incident Response will explore the core of DFIR, where digital forensics becomes detective work and incident response turns into firefighting.

**Most prevalent malware files from Talos telemetry over the past week **

**SHA 256:** 47ecaab5cd6b26fe18d9759a9392bce81ba379817c53a3a468fe9060a076f8ca   
**MD5:** 71fea034b422e4a17ebb06022532fdde   
**Typical Filename:** VID001.exe   
**Claimed Product:** N/A   
**Detection Name:** RF.Talos.80 

**SHA 256:** 76491df69a26019139ac11117cd21bf5d0257a5ebd3d67837f558c8c9c3483d8   
**MD5:** b209df2951e29ab5eab4009579b10b8d  
**Typical Filename:** FileZilla\_3.67.1\_win64\_sponsored2-setup.exe   
**Claimed Product:** FileZilla   
**Detection Name:** W32.76491DF69A-95.SBX.TG

**SHA 256:** c20fbc33680d745ec5ff7022c282a6fe969c6e6c7d77b7cfac34e6c19367cf9a   
**MD5:** 3bc6d86fc4b3262137d8d33713ed6082   
**Typical Filename:** 8c556f0a.dll   
**Claimed Product:** N/A   
**Detection Name:** Gen:Variant.Lazy.605353 

**SHA 256:** f0d7a2bb0c5db162332418747ba4987027b8a746b24c919a24235ff3b70d25e3   
**MD5:** 0d849044612667362bc88780baa1c1b7   
**Typical Filename:** CryptX.dll   
**Claimed Product:** N/A    
**Detection Name:** Gen:Variant.Lazy.605353 

**SHA 256:** 331fdf5f1f5679a6f6bb0baee8518058aba8081ef8f96e57fa3b74291fcbb814   
**MD5:** f23b90fc9bc301baf3e399e189b6d2dc   
**Typical Filename:** B.dll   
**Claimed Product:** N/A     
**Detection Name:** Gen:Variant.Lazy.605353

What NIST’s latest password standards mean, and why the old ones weren’t working

Cisco Talos is releasing a GDT file on GitHub that contains various definitions for functions and data types.

Thursday, October 10, 2024 06:00

While reverse-engineering Windows drivers with Ghidra, it is common to encounter a function or data type that is not recognized during disassembly.  

This is because Ghidra does not natively include the majority of the definitions for data types and functions used by Windows drivers.  

Thankfully, these problems can usually be solved by importing Ghidra data type archive files (.gdt) that contain the relevant definitions.  

However, it is not uncommon that the definitions in question aren’t available in a preexisting .gdt file, meaning a new definition must be created manually. Additionally, in some cases, the function or data type may be undocumented by Microsoft, making the process of creating a new definition a more tedious process.  

To aid analysts in reverse engineering Windows drivers, Cisco Talos is releasing a GDT file on GitHub that contains various definitions for functions and data types that have been created as needed during our analysis of malicious drivers, as they were not present in the commonly used data type archives.  

It is important to note that this archive is not intended to contain all undocumented Windows functions or serve as a replacement for other available data type archives, but as a supplement to them. This is a long-term project that will continue to grow when new definitions are created by our analysts and added to the public release.  

The archive can be found here on our GitHub repository.

Ghidra data type archive for Windows driver functions

Talos also discovered three vulnerabilities in Veertu’s Anka Build, a suite of software designed to test macOS or iOS applications in CI/CD environments.

Wednesday, October 9, 2024 12:00

Cisco Talos’ Vulnerability Research team recently disclosed six new security vulnerabilities across a range of software, including one in a popular PDF reader that could lead to arbitrary code execution. 

Foxit PDF Reader, one of the most popular alternatives to Adobe Acrobat, contains a memory corruption vulnerability that could allow an adversary to execute code on the targeted machine. 

Talos also discovered three vulnerabilities in Veertu’s Anka Build, a suite of software designed to test macOS or iOS applications in CI/CD environments.

For Snort coverage that can detect the exploitation of these vulnerabilities, download the latest rule sets from Snort.org, and our latest Vulnerability Advisories are always posted on Talos Intelligence’s website.

**Use-after-free vulnerability in Foxit PDF Reader**

_Discovered by KPC._

A use-after-free vulnerability in Foxit PDF Reader could lead to memory corruption and eventually arbitrary code execution on the targeted machine.

TALOS-2024-1967 (CVE-2024-28888) can be triggered if an adversary tricks a user into opening a specially crafted PDF that contains malicious JavaScript. Exploitation could also occur if the targeted user visits an attacker-controlled website with the Foxit PDF Reader browser extension enabled.

**Multiple vulnerabilities in GNOME project library could lead to code execution**

Two vulnerabilities in the G Structured File Library (libgsf) could lead to arbitrary code execution. 

This GNOME project supports an abstraction layer around different structure file formats such as .tar and .zip. 

TALOS-2024-2068 (CVE-2024-36474) is an integer overflow vulnerability that could allow an out-of-bounds index to be used when reading and writing to an array. This could lead to arbitrary code execution if an adversary exploited it appropriately. 

TALOS-2024-2069 (CVE-2024-42415) works similarly, but in this case, it arises when the software processes the sector allocation table.

An adversary could exploit both these vulnerabilities by tricking the targeted user into opening a malicious, specially crafted file. 

**Three vulnerabilities in Veertu Anka Build**

_Discovered by KPC._

Veertu’s Anka Build software contains three vulnerabilities, two of which are directory traversal issues. 

Anka Build is a suite of software designed to test macOS and iOS applications in CI/CD environments. The suite is a centralized dashboard for managing nodes, VM instances, templates, tags and logs. 

This software contains two directory traversal vulnerabilities — TALOS-2024-2059 (CVE-2024-41163) and TALOS-2024-2061 (CVE-2024-41922) — that could lead to the disclosure of arbitrary files. An adversary could exploit these vulnerabilities by sending the target a specially crafted HTTP request. 

Another vulnerability, TALOS-2024-2060 (CVE-2024-39755), is a privilege escalation issue that could allow a low-privileged user to force the software to update, potentially raising their access to that of a root user.

Vulnerability in popular PDF reader could lead to arbitrary code execution; Multiple issues in GNOME project

The two vulnerabilities that Microsoft reports have been actively exploited in the wild and are publicly known are both rated as only being of “moderate” severity.

Tuesday, October 8, 2024 15:04

The largest Microsoft Patch Tuesday since July includes two vulnerabilities that have been exploited in the wild and three other critical issues across the company’s range of hardware and software offerings.  

October’s monthly security update from Microsoft includes fixes for 117 CVEs, the most in a month since July’s updates covered 142 vulnerabilities.   

The two vulnerabilities that Microsoft reports have been actively exploited in the wild and are publicly known are both rated as only being of “moderate” severity.  

CVE-2024-43572 is a remote code execution vulnerability in the Microsoft Management Console that could allow an attacker to execute arbitrary code on the targeted machine. Microsoft’s security update will prevent untrusted Microsoft Saved Console (MSC) files from being opened to protect users against adversaries trying to exploit this vulnerability.  

The security update will prevent untrusted Microsoft Saved Console (MSC) files from being opened to protect customers against the risks associated with this vulnerability. 

The other vulnerability that was exploited in the wild in this week’s security update is CVE-2024-43573, a platform spoofing vulnerability in Windows MSHTML. Platform spoofing vulnerabilities usually allow an adversary to gain unauthorized access to an environment by disguising themselves as a trusted source.  

CVE-2024-43583, an elevation of privilege vulnerability in Winlogon, has also been publicly disclosed, according to Microsoft, but has not yet been exploited in the wild. This vulnerability could allow an attacker to obtain SYSTEM-level privilege. In addition to applying the patch, Microsoft also recommends users enable a Microsoft first-party Input Method Editor (IME) on their devices to prevent adversaries from being able to exploit third-party IMEs during the sign-in process. 

October’s Patch Tuesday also includes three critical vulnerabilities that could all lead to remote code execution. 

CVE-2024-43468 is the most serious of this bunch, with a CVSS severity score of 9.8 out of 10. An attacker could exploit this vulnerability in Microsoft Configuration Manager to execute commands on the targeted server or underlying database. 

Another remote code execution vulnerability, CVE-2024-43488, exists in the Visual Studio Code extension for Arduino, an open-source platform for building and managing single-board microcontrollers and microcontroller kits. A missing authentication protocol could allow an adversary to execute remote code over the network.  

Microsoft stated that the company has already mitigated this vulnerability and users do not need to take any additional steps. This extension has also been deprecated and can no longer be downloaded from the internet. 

Lastly, CVE-2024-43582 exists in the Windows Remote Desktop Protocol server and could allow an attacker to execute code on the server side with the same permissions as the RPC service. An adversary could exploit this vulnerability by sending malformed packets to an RPC host. However, exploitation also requires that the adversary win a race condition first.  

Cisco Talos would also like to highlight several vulnerabilities that are only rated as “important,” but Microsoft lists as “more likely” to be exploited: 

*   CVE-2024-43502: Elevation of privilege vulnerability in Windows Kernel 
*   CVE-2024-43509 and CVE-2024-43556: Elevation of privilege vulnerabilities in Windows Graphics Component     
*   CVE-2024-43560: Elevation of privilege vulnerability in Windows Storage Port 
*   CVE-2024-43581 and CVE-2024-43615: Remote code execution vulnerability in Microsoft OpenSSH for Windows  
*   CVE-2024-43609: Spoofing vulnerability in Microsoft Office 

A complete list of all the other vulnerabilities Microsoft disclosed this month is available on its update page. 

In response to these vulnerability disclosures, Talos is releasing a new Snort rule set that detects attempts to exploit some of them. Please note that additional rules may be released at a future date and current rules are subject to change pending additional information. Cisco Security Firewall customers should use the latest update to their ruleset by updating their SRU. Open-source Snort Subscriber Rule Set customers can stay up to date by downloading the latest rule pack available for purchase on Snort.org.  

The rules included in this release that protect against the exploitation of many of these vulnerabilities are 64083 - 64086, 64089, 64090, 64111 and 64112. There are also Snort 3 rules 301034 - 301036 and 301041.

Largest Patch Tuesday since July includes two exploited in the wild, three critical vulnerabilities

Despite what lessons we thought we learned from Colonial Pipeline, none of those lessons have been able to be put into practice.

Thursday, October 3, 2024 14:00

Government-run water systems and other critical infrastructure are still at risk from state-sponsored actors, according to a renewed warning from the U.S. Cybersecurity and Infrastructure Security Agency.  

CISA released an advisory last week on the matter of days after a small water treatment facility in Kansas was forced into manual operations after a cyber attack.  

I feel like this is just the latest in a string of warnings that we’ve been talking about since the Colonial Pipeline attack in 2021 that forced a gasoline shortage across the Eastern U.S. We’ve been discussing the importance of defending critical infrastructure for years now, so what’s new now? 

For starters, it seems like the frequency of these attacks seems to be on the rise. And many efforts to regulate cybersecurity policies and procedures in the industry have thus far fallen flat. 

The White House is reportedly working on rolling out a second wave of cybersecurity recommendations for water treatment facilities on the back of the attack in Kansas that affected the public water supply of 11,000 people. Although the cyber attack did not actually affect anyone from getting their water, it does raise the question of how much of an issue this could be if a state-sponsored actor were to target a facility in a town with a larger population, or if there weren’t backup plans in place to operate the facility manually.  

The U.S. Environmental Protection Agency (EPA) said last year that it had to pull a memo outlining cybersecurity standards at water treatment plants because of constant legal action from state and federal lawmakers and private water companies. And the American Water Works Association (a non-profit lobbying organization representing more than 50,000 members) has advocated for facilities and groups like the AWWA to write their own cybersecurity policies rather than relying on the U.S. government.  

All of that is to say, despite what lessons we thought we learned from Colonial Pipeline, none of those lessons have been able to be put into practice, and we’re still where we were with cybersecurity policies and regulations three years ago.  

Despite urging from the industry and some lawmakers, I’ve yet to see these groups write any of their own policies, so even if they have that power, they don’t seem to be taking advantage of it. So when CISA puts out this type of alert again in a few months after whatever future incident lies ahead, I would expect to see more action from all parties involved rather than another round of words warning that attacks can, and will, happen. 

**The one big thing **

Talos has recently observed an attack leading to the deployment of a MedusaLocker ransomware variant known as “BabyLockerKZ.” This actor has been active since at least late 2022 and targets organizations worldwide, although the number of victims was higher than average in EU countries until mid-2023 and, since then, in South American countries. We assess with medium confidence that the actor is financially motivated, likely working as an IAB or an affiliate of a ransomware cartel. 

**Why do I care? **

The actor behind these attacks seems to be particularly active, infecting more than 100 organizations per month, according to Talos telemetry. This reveals the professional and highly aggressive nature of the attacks and is coherent with the activity we would expect from an IAB or ransomware affiliate. As with any ransomware, BabyLockerKZ looks to encrypt targets’ files and lock them down until the target pays the request ransom.  

**So now what? **

Talos has released several new Snort rules and ClamAV signatures that detect the activity of this group and BabyLockerKZ. This group is also known to use several publicly available tools in their attacks, such as Mimikatz, which are well-known to the security community at this point. For more on living-off-the-land binaries (LoLBins) that attackers like this one are increasingly using, read our blog post here.  

**Top security headlines of the week **

**International law enforcement agencies worked together to arrest and unmask four individuals believed to be associated with the LockBit ransomware group.** As part of this campaign, investigators have also linked one of the LockBit members to Evil Corp, a Russian-backed cybercrime gang. At a press conference announcing the arrests, representatives from the U.K.’s National Crime Agency said that Evil Corp maintained a “privileged” relationship with the Russian government and was often asked to carry out targeted cyber attacks against NATO countries. LockBit is traditionally associated with financially motivated ransomware attacks targeting private companies, regardless of the country in which they reside. Europol, the U.K. NCA, the U.S. FBI and Japan’s National Police have also worked together to create and release a decryptor that can unlock files affected by the LockBit ransomware. The same agencies have been working since last year to target and seize assets and servers belonging to LockBit. The threat actor has taken credit for several major attacks over the past several years, including those targeting Boeing, Volkswagen, multiple major international ports and government-owned computers in Fulton County, Georgia. (Europol, TechCrunch) 

**The latest version of the U.S.’s National Institute of Standards and Technology’s password recommendations drop complexity in favor of length.** NIST’s latest version of its Password Guidelines removes the recommendations that passwords use a mixture of character types and that they be changed often. Instead, the draft states that credential service providers (CSPs) recommend users create passwords between 15 and 64 characters that may include ASCII or Unicode characters. The previous version of the NIST standards led many users to adopt easy-to-guess passwords such as “Password1234!” or store the complicated passwords in easy-to-access places, such as written down on a piece of paper near their computer. CSPs are also instructed to drop knowledge-based authentication or security questions when selecting passwords. NIST standards are important because they formalize principles widely adopted by the U.S. government and major technology companies like Microsoft and Google. The latest draft also states that users only need to change their passwords in the event of a publicly reported data breach. (Infosecurity Magazine, Dark Reading) 

**A vulnerability in a web app from car manufacturer Kia could allow an attacker to view a car’s license plate, unlock the doors, and even remotely start the ignition.** The since-patched vulnerability in Kia’s web portal could allow attackers to essentially build and deploy their own web app and reassign control of the internet-connected features of most modern Kia vehicles. The vulnerability could have allowed an adversary to immediately ping the location of a targeted vehicle, process its license plate number, and even honk the horn. This is the second such vulnerability the group of researchers has disclosed to a Hyundai-owned company in the past two years. The vulnerability highlights the risk that modern vehicles come with, many of which rely on internet connectivity for some of their features or interface with web apps, websites or mobile phone apps. A proof of concept from the researchers included a dashboard that could allow an attacker to type in a license plate number and then retrieve the owner’s personal information, eventually adding themselves as an “owner” of the car and executing commands on the vehicle. (Wired, Security Week) 

**Can’t get enough Talos? **

*   Resurgence of Spam: Cisco Talos Sound Alarm on New Tactics 
*   Critical RCE vulnerability found in OpenPLC 
*   Simple Mail Transfer Pirates: How threat actors are abusing third-party infrastructure to send spam 

**Upcoming events where you can find Talos**

**MITRE ATT&CKcon 5.0** **(Oct. 22 - 23)** 

_McLean, Virginia and Virtual_

Nicole Hoffman and James Nutland will provide a brief history of Akira ransomware and an overview of the Linux ransomware landscape. Then, morph into action as they take a technical deep dive into the latest Linux variant using the ATT&CK framework to uncover its techniques, tactics and procedures.

**it-sa Expo & Congress** **(Oct. 22 - 24)** 

_Nuremberg, Germany_

**White Hat Desert Con** **(Nov. 14)** 

_Doha, Qatar_

**misecCON** **(Nov. 22)** 

_Lansing, Michigan_

Terryn Valikodath from Cisco Talos Incident Response will explore the core of DFIR, where digital forensics becomes detective work and incident response turns into firefighting.

**Most prevalent malware files from Talos telemetry over the past week **

**SHA 256:** 47ecaab5cd6b26fe18d9759a9392bce81ba379817c53a3a468fe9060a076f8ca   
**MD5:** 71fea034b422e4a17ebb06022532fdde   
**Typical Filename:** VID001.exe   
**Claimed Product:** N/A   
**Detection Name:** RF.Talos.80 

**SHA 256:** 76491df69a26019139ac11117cd21bf5d0257a5ebd3d67837f558c8c9c3483d8   
**MD5:** b209df2951e29ab5eab4009579b10b8d  
**Typical Filename:** FileZilla\_3.67.1\_win64\_sponsored2-setup.exe   
**Claimed Product:** FileZilla   
**Detection Name:** W32.76491DF69A-95.SBX.TG

**SHA 256:** c20fbc33680d745ec5ff7022c282a6fe969c6e6c7d77b7cfac34e6c19367cf9a   
**MD5:** 3bc6d86fc4b3262137d8d33713ed6082   
**Typical Filename:** 8c556f0a.dll   
**Claimed Product:** N/A   
**Detection Name:** Gen:Variant.Lazy.605353 

**SHA 256:** f0d7a2bb0c5db162332418747ba4987027b8a746b24c919a24235ff3b70d25e3   
**MD5:** 0d849044612667362bc88780baa1c1b7   
**Typical Filename:** CryptX.dll   
**Claimed Product:** N/A    
**Detection Name:** Gen:Variant.Lazy.605353 

**SHA 256:** 331fdf5f1f5679a6f6bb0baee8518058aba8081ef8f96e57fa3b74291fcbb814   
**MD5:** f23b90fc9bc301baf3e399e189b6d2dc   
**Typical Filename:** B.dll   
**Claimed Product:** N/A     
**Detection Name:** Gen:Variant.Lazy.605353