Suspicious Restic Backup Exfiltration to Remote Repository via Command Line

PremiumReviewedSigma · Medium · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-09-20
Updated
2026-09-20

ATT&CK techniques

Collection
  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. C2

  12. Exfiltration

  13. Impact

What it detects

This rule detects the restic backup tool being used to push a backup to a remote REST repository, a data-exfiltration technique in the Nitrogen 2.0 campaign preceding ALPHV/BlackCat ransomware. Attackers repurpose the legitimate backup utility to stage collected data offsite. Detecting restic backup commands surfaces exfiltration before encryption.

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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.