Nerds are reporting the new Team Fortress 2 64bit version is being flagged as malware from AV engines.
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Malware review:
2024-03-26 - Malware Disguised as Installer from Korean Public Institution (Kimsuky Group)
- Masquerades as installer (0 points)
- Masqueraded installer is not functional (-1 points)
- Dropper is signed (+1 points)
- Drops src.rar (-1 points)
- Password protected with "1q2w3e4r" (-1 points)
- Execution begins with command "installer" (0 points)
- Copies to %USERPROFILE% (0 points)
- Payload masquerades as svchost.exe (0 points)
- Registers itself in Task Scheduler (0 points)
- Masquerades in Task Scheduler as "Windows Backups" (0 points)
- Developed in Go (+1 points)
- Recycled code from previous malware campaign (-1 points)
- Used same signed certificate from previous malware campaign (-1 points)
- Has generic RAT functionality (0 points)
- TA pushed Mimikatz to infected machine (-2 points)
- Mimikatz masqueraded as cache.exe (0 points)
- TA used free Ngrok domain for C2 (-1 points)
We give Kimsuky Group's recent APT campaign an F.
Unoriginal, generic code, some code dependent on external applications (Winrar) which may not be present on victim machines. Password is hardcoded in payload and easily identifiable. Recycled code and recycled certificate is poor design and lazy. Masqueraded installer not working is lazy. Pushing Mimikatz is also a poor decision, this tool is heavily flagged and is a big red flag.
2024-03-26 - Malware Disguised as Installer from Korean Public Institution (Kimsuky Group)
- Masquerades as installer (0 points)
- Masqueraded installer is not functional (-1 points)
- Dropper is signed (+1 points)
- Drops src.rar (-1 points)
- Password protected with "1q2w3e4r" (-1 points)
- Execution begins with command "installer" (0 points)
- Copies to %USERPROFILE% (0 points)
- Payload masquerades as svchost.exe (0 points)
- Registers itself in Task Scheduler (0 points)
- Masquerades in Task Scheduler as "Windows Backups" (0 points)
- Developed in Go (+1 points)
- Recycled code from previous malware campaign (-1 points)
- Used same signed certificate from previous malware campaign (-1 points)
- Has generic RAT functionality (0 points)
- TA pushed Mimikatz to infected machine (-2 points)
- Mimikatz masqueraded as cache.exe (0 points)
- TA used free Ngrok domain for C2 (-1 points)
We give Kimsuky Group's recent APT campaign an F.
Unoriginal, generic code, some code dependent on external applications (Winrar) which may not be present on victim machines. Password is hardcoded in payload and easily identifiable. Recycled code and recycled certificate is poor design and lazy. Masqueraded installer not working is lazy. Pushing Mimikatz is also a poor decision, this tool is heavily flagged and is a big red flag.
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vx-underground
Following the return of HelloKitty ransomware group (now HelloGookie), the individuals behind HelloKitty ransomware group released more files from CD Projekt Red – the game studio behind The Witcher and Cyberpunk 2077. Using the leaks nerds have compiled…
Note: some binaries were already compiled from the previous leak*
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Malware review:
2024-02-27- European diplomats targeted by SPIKEDWIRE with WINELOADER
Notes:
*Zscaler on release of this article did not attribute it to any state-sponsored Threat Actor
*Mandiant later attributed this payload to APT29 March, 22nd 2024 in an article noscriptd: "APT29 Uses WINELOADER to Target German Political Parties"
- Targets specific European diplomats via malicious PDF (0 points)
- Targets carefully enumerated, low volume of malicious PDFs sent (+1 points)
- Malicious PDF masquerading as letter from Ambassador of India for wine tasting event (0 points)
- PDF requires registration to event, links to compromised website (+1 points)
- 'Invitation site' requires guest to download .zip file (-1 point)
- .zip file contains wine.hta which masquerades as invitation event details (0 points)
- .hta file contains malicious javanoscript, obfuscated with opensource tool (-1 points)
- .hta downloads BASE64 encoded .txt from compromised website (0 points)
- .hta uses certutils.exe to BASE64 decode .txt file (+1 point)
- BASE64 decoded text file transfroms into .zip file, extracted to C:\Windows\Tasks (+1 points)
- .zip extracts sqlwrite.exe and vcruntime140.dll (+1 points)
- APT29 uses DLL sideloading vulnerability (unknown at the time) on sqlwrite.exe to load fake vcruntime140.dll (+2 points)
- Side loaded DLL function se_se_translator pulls RSA encrypted .exe out of DLL (+1 point)
- Side loaded DLL encrypts and decrypts .exe when no longer in use (+2 points)
- .exe has different modules (plugins) for different task (+2 points)
- Modules use DLL Hollowing to inject into randomly selected DLLs (+1 point)
- Each module is downloaded individually from remote C2 (compromised websites) (+2 points)
- Connecting to C2 uses GET HTTP. Sent data is custom made data blobs containing information on modules and commands sent and received (+2 points)
- Persistent achieved by Microsoft signed sqlwriter.exe DLL side loading from Windows Task Scheduler (0 points)
- Memory is zero filled when not used (+1 points)
2024-02-27- European diplomats targeted by SPIKEDWIRE with WINELOADER
Notes:
*Zscaler on release of this article did not attribute it to any state-sponsored Threat Actor
*Mandiant later attributed this payload to APT29 March, 22nd 2024 in an article noscriptd: "APT29 Uses WINELOADER to Target German Political Parties"
- Targets specific European diplomats via malicious PDF (0 points)
- Targets carefully enumerated, low volume of malicious PDFs sent (+1 points)
- Malicious PDF masquerading as letter from Ambassador of India for wine tasting event (0 points)
- PDF requires registration to event, links to compromised website (+1 points)
- 'Invitation site' requires guest to download .zip file (-1 point)
- .zip file contains wine.hta which masquerades as invitation event details (0 points)
- .hta file contains malicious javanoscript, obfuscated with opensource tool (-1 points)
- .hta downloads BASE64 encoded .txt from compromised website (0 points)
- .hta uses certutils.exe to BASE64 decode .txt file (+1 point)
- BASE64 decoded text file transfroms into .zip file, extracted to C:\Windows\Tasks (+1 points)
- .zip extracts sqlwrite.exe and vcruntime140.dll (+1 points)
- APT29 uses DLL sideloading vulnerability (unknown at the time) on sqlwrite.exe to load fake vcruntime140.dll (+2 points)
- Side loaded DLL function se_se_translator pulls RSA encrypted .exe out of DLL (+1 point)
- Side loaded DLL encrypts and decrypts .exe when no longer in use (+2 points)
- .exe has different modules (plugins) for different task (+2 points)
- Modules use DLL Hollowing to inject into randomly selected DLLs (+1 point)
- Each module is downloaded individually from remote C2 (compromised websites) (+2 points)
- Connecting to C2 uses GET HTTP. Sent data is custom made data blobs containing information on modules and commands sent and received (+2 points)
- Persistent achieved by Microsoft signed sqlwriter.exe DLL side loading from Windows Task Scheduler (0 points)
- Memory is zero filled when not used (+1 points)
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vx-underground
Malware review: 2024-02-27- European diplomats targeted by SPIKEDWIRE with WINELOADER Notes: *Zscaler on release of this article did not attribute it to any state-sponsored Threat Actor *Mandiant later attributed this payload to APT29 March, 22nd 2024…
We give APT29's recent APT campaign an B+.
APT29 WINELOADER is modular, multi-staged, practices OPSEC by using multiple compromised websites, has custom built HTTP data blobs. It uses a LOLBIN like technique for persistence and uses a previously undocumented DLL Side Load vulnerability to execute payloads. Random DLL injection is a plus. The encryption and decryption of data is also an interesting plus as it improves its stealth factors and making it more difficult to reverse engineer. The precision of targets and masquerading of an wine tasting event is also interesting – demonstrating research of targets prior to attack. This same attack was later used against German politicians as well.
APT29 WINELOADER is modular, multi-staged, practices OPSEC by using multiple compromised websites, has custom built HTTP data blobs. It uses a LOLBIN like technique for persistence and uses a previously undocumented DLL Side Load vulnerability to execute payloads. Random DLL injection is a plus. The encryption and decryption of data is also an interesting plus as it improves its stealth factors and making it more difficult to reverse engineer. The precision of targets and masquerading of an wine tasting event is also interesting – demonstrating research of targets prior to attack. This same attack was later used against German politicians as well.
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The Microsoft Fabric community (?) forum is old and allows unchecked HTML on posts.
- Link attached, don't click the silly button
- Thanks to rari_teh for sharing this with us
Behold:
https://ideas.fabric.microsoft.com/ideas/idea/?ideaid=908a0c5d-95fe-ee11-a73c-000d3ae45d44
- Link attached, don't click the silly button
- Thanks to rari_teh for sharing this with us
Behold:
https://ideas.fabric.microsoft.com/ideas/idea/?ideaid=908a0c5d-95fe-ee11-a73c-000d3ae45d44
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Today we decided to check in with Lockbit ransomware group. The Lockbit ransomware group administrative staff informed us that they're actively working on several new projects – most notably they have developed a new ransomware payload which targets Nutanix
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vx-underground
Today we decided to check in with Lockbit ransomware group. The Lockbit ransomware group administrative staff informed us that they're actively working on several new projects – most notably they have developed a new ransomware payload which targets Nutanix
We asked for a sample of the new payload. The Lockbit representative subsequently told us: "Ask the FBI for the payload"
>:(
We asked for more information on the Nutanix locker. They told us: "TLP:RED, sorry"
>:(
>:(
We asked for more information on the Nutanix locker. They told us: "TLP:RED, sorry"
>:(
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C programmers having a complete personality change the second they see someone mention Rust or Go (it's going to be a 4 hour long debate)
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