Data Collection via Rar Archiving With Recursion and Compression Flags

PremiumReviewedSigma · Medium · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-09-13
Updated
2026-09-13

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 command-line RAR archiving using recursive and compression flags seen in Operation Soft Cell staging of stolen data for exfiltration. Bulk recursive archiving prior to exfiltration is a common collection step and warrants review when combined with the observed flag pattern.

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Data Collection via Rar Archiving With Recursion and Compression Flags
Pivot detection · T1560.001 · 9 related

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