apt29-cozy-bear
Adversary-emulation profile for APT29 (Cozy Bear / Midnight Blizzard / NOBELIUM / The Dukes), Russia's SVR-attributed cyber-espionage group, mapping its ATT&CK TTPs to Decepticon emulation tooling.
54
61%
Does it follow best practices?
Run evals on this skill
Adds up to 20 points to the overall score
View guide
Critical
Do not install without reviewing
Fix and improve this skill with Tessl
tessl review fix ./packages/decepticon/decepticon/skills/shared/adversary-emulation/apt29-cozy-bear/SKILL.mdSecurity
2 findings: 1 critical severity, 1 medium severity. Installing this skill is not recommended: please review these findings carefully if you do intend to do so.
E006: Malicious code pattern detected in skill scripts.
What this means
Detected high-risk code patterns in the skill content — including its prompts, tool definitions, and resources — such as data exfiltration, backdoors, remote code execution, credential theft, system compromise, supply chain attacks, and obfuscation techniques.
Why it was flagged
The document contains explicit, actionable instructions for credential theft (DCSync, Kerberoasting, Golden SAML), setting up remote command-and-control (HTTPS/DNS C2, c2/sliver), supply-chain trojanization, registering OAuth/service-principal backdoors, and staging exfiltration—all high-risk behaviors if used outside authorized testing.
W013: Attempt to modify system services in skill instructions.
What this means
The skill prompts the agent to compromise the security or integrity of the user’s machine by modifying system-level services or configurations, such as obtaining elevated privileges, altering startup scripts, or changing system-wide settings.
Why it was flagged
The skill explicitly instructs the agent to perform privileged and state-changing actions (create cloud accounts/service principals, add credentials, register federated trusts, perform DCSync/NTDS extraction, run C2/beacons and payloads) which can modify the host or environment and thus compromise the machine's state.
- Repository
- PurpleAILAB/Decepticon
- Commit
4484f85
- Audited
- Security analysis
Is this your skill?
If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.