Patchwork Hackers Target Bhutan with Advanced Brute Ratel C4 Tool
Jul 24, 2024
Cyber Espionage / Threat Intelligence
The threat actor known as Patchwork has been linked to a cyber attack targeting entities with ties to Bhutan to deliver the Brute Ratel C4 framework and an updated version of a backdoor called PGoShell. The development marks the first time the adversary has been observed using the red teaming software, the Knownsec 404 Team said in an analysis published last week. The activity cluster, also called APT-C-09, Dropping Elephant, Operation Hangover, Viceroy Tiger, and Zinc Emerson, is a state-sponsored actor likely of Indian origin. Known for conducting spear-phishing and watering hole attacks against China and Pakistan, the hacking crew is believed to be active since at least 2009, according to data shared by Chinese cybersecurity firm QiAnXin. Last July, Knownsec 404 disclosed details of an espionage campaign aimed at universities and research organizations in China that leveraged a .NET-based implant codenamed EyeShell to fetch and execute commands from an attacker-controlled