Threat Group Cards: A Threat Actor Encyclopedia Archived: 2026-04-05 13:43:24 UTC Home > List all groups > List all tools > List all groups using tool CozyDuke Tool: CozyDuke Names CozyDuke CozyCar CozyBear Cozer EuroAPT Category Malware Type Backdoor, Credential stealer, Keylogger, Remote command Description (F-Secure) CozyDuke is not simply a malware toolset; rather, it is a modular malware platform formed around a core backdoor component. This component can be instructed by the C&C server to download and execute arbitrary modules, and it is these modules that provide CozyDuke with its vast array of functionality. Known CozyDuke modules include: • Command execution module for executing arbitrary Windows Command Prompt commands • Password stealer module • NT LAN Manager (NTLM) hash stealer module • System information gathering module • Screenshot module In addition to modules, CozyDuke can also be instructed to download and execute other, independent executables. In some observed cases, these executables were self-extracting archive files containing common hacking tools, such as PsExec and Mimikatz, combined with script files that execute these tools. In other cases, CozyDuke has been observed downloading and executing tools from other toolsets used by the Dukes such as OnionDuke, SeaDuke, and HammerDuke. Information MITRE ATT&CK Malpedia https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=d6e64a22-315a-4384-8d4f-9803fb281b45 Page 1 of 2 AlienVault OTX Last change to this tool card: 22 June 2023 Download this tool card in JSON format All groups using tool CozyDuke 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=d6e64a22-315a-4384-8d4f-9803fb281b45 https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=d6e64a22-315a-4384-8d4f-9803fb281b45 Page 2 of 2