Suspicious CoffeeLoader Armoury DLL Dropped to User Writable Path (via file_event)

PremiumReviewedSigma · Medium · v1
Product
windows
Category
file_event
Author
HuntRule
Published
2026-08-23
Updated
2026-08-28

ATT&CK techniques

Execution → Defense Evasion
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Cred Access

  9. Discovery

  10. Lateral Movement

  11. Collection

  12. C2

  13. Exfiltration

  14. Impact

What it detects

This rule detects the ArmouryAIOSDK.dll payload being written to ProgramData, LocalAppData or the Temp directory as performed by CoffeeLoader during installation. The genuine ASUS DLL is not expected in these user writable locations.

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Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.