Malicious DragonForce Ransomware Encrypted File Extension (via file_event)

PremiumReviewedSigma · High · v1
Category
file_event
Author
HuntRule
Published
2026-08-22
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 creation of files bearing the .dragonforce_encrypted extension written by the DragonForce ransomware payload during mass file encryption. Presence of this extension confirms active data-encryption impact on the host. Rapid detection enables containment before encryption spreads across shares.

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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.