Malicious DEVMAN Ransomware Encrypted File and Note Artifacts

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

ATT&CK techniques

Impact
  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

What it detects

This rule detects files encrypted by DEVMAN ransomware, identified by the .DEVMAN extension and the deterministically renamed ransom note e47qfsnz2trbkhnt.devman. DEVMAN is a DragonForce variant that encrypts its own note, producing this fixed filename.

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Malicious Volume Shadow Copy Deletion via Vssadmin
Malicious CACTUS Ransomware Note and Encrypted File Artifacts (via file_event)
Malicious Macaw Ransom Note or Encrypted File Written (via file_event)
Malicious DEVMAN Ransomware Encrypted File and Note Artifacts
Pivot detection · T1486 · 9 related

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