Threat Group Cards: A Threat Actor Encyclopedia Archived: 2026-04-05 17:23:47 UTC Home > List all groups > List all tools > List all groups using tool FatDuke Tool: FatDuke Names FatDuke Category Malware Type Backdoor Description (ESET) FatDuke, the third stage. This sophisticated backdoor implements a lot of functionalities and has a very flexible configuration. Its code is also well obfuscated using manu opaque predicates. They re-comple it and modify the obfuscation frequently to bypass security product detections. Information MITRE ATT&CK Malpedia Last change to this tool card: 30 December 2022 Download this tool card in JSON format All groups using tool FatDuke Changed Name Country Observed APT groups APT 29, Cozy Bear, The Dukes 2008-Feb 2025 1 group listed (1 APT, 0 other, 0 unknown) Source: https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=0facfa50-ed1b-4449-b2cc-6f0ce5565706 https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=0facfa50-ed1b-4449-b2cc-6f0ce5565706 Page 1 of 1