Unit 42 identified a campaign targeting government entities and state-affiliated infrastructure, with observed activity spanning from October 2025–April 2026. We track this activity as CL-UNK-1211.
In the operations we witnessed, the attackers relied on AI-generated payloads. Multiple artifacts deployed throughout the intrusion contained AI-made conversational annotations and developer reasoning comments, suggesting that the code was either generated using large language models (LLMs) or executed by an automated AI agent.
The attackers behind this cluster of activity focused on Linux environments to conduct extensive reconnaissance and maintain persistent network access to support intelligence-gathering. The attackers attempted to dump sensitive databases and exfiltrate government mailboxes to access social media accounts.
Read more…
Source: Palo Alto Unit 42
Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox
Related:
- Critical remote code execution flaw in thousands of VMWare vCenter servers remains unpatched
June 15, 2021
Researchers have warned that thousands of internet-facing VMWare vCenter servers still harbor critical vulnerabilities weeks after patches were released. The vulnerabilities impact VMWare vCenter Server, a centralized management utility. VMWare issued patches for two critical bugs, CVE-2021-21985 and CVE-2021-21986, on May 25. Read more… Source: ZDNet
- Paradise Ransomware source code released on a hacking forum
June 15, 2021
The complete source code for the Paradise Ransomware has been released on a hacking forum allowing any would-be cyber criminal to develop their own customized ransomware operation. Released on the hacking forum XSS, the link to the source code is only accessible to active users on the site who have previously replied to or reacted to ...
- Andariel evolves to target South Korea with ransomware
June 15, 2021
In April 2021, we observed a suspicious Word document with a Korean file name and decoy. It revealed a novel infection scheme and an unfamiliar payload. While we were doing our research into these findings, Malwarebytes published a nice report with technical details about the same series of attacks, which they attributed to the Lazarus ...
- REvil ransomware hits US nuclear weapons contractor
June 14, 2021
US nuclear weapons contractor Sol Oriens has suffered a cyberattack allegedly at the hands of the REvil ransomware gang, which claims to be auctioning data stolen during the attack. Sol Oriens describes itself as helping the “Department of Defense and Department of Energy Organizations, Aerospace Contractors, and Technology Firms carry out complex programs.” However, job postings first ...
- Microsoft: SEO poisoning used to backdoor targets with malware
June 14, 2021
Microsoft is tracking a series of attacks that use SEO poisoning to infect targets with a remote access trojan (RAT) capable of stealing the victims’ sensitive info and backdooring their systems. The malware delivered in this campaign is SolarMarker (aka Jupyter, Polazert, and Yellow Cockatoo), a .NET RAT that runs in memory and is used by ...
- Avaddon ransomware shuts down and releases decryption keys
June 11, 2021
The Avaddon ransomware gang has shut down operation and released the decryption keys for their victims to BleepingComputer.com. This morning, BleepingComputer received an anonymous tip pretending to be from the FBI that contained a password and a link to a password-protected ZIP file. Read more… Source: Bleeping Computer