Suspicious COOKIE SPIDER macOS Data Exfiltration via curl Archive Upload (via process_creation)

PremiumReviewedSigma · High · v1
Product
macos
Category
process_creation
Author
HuntRule
Published
2026-05-09
Updated
2026-08-28

ATT&CK techniques

Exfiltration
  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. Impact

What it detects

This rule detects curl uploading an archive named out.zip on macOS. The SHAMOS stealer delivered by COOKIE SPIDER collects credentials and wallet files and exfiltrates them in an out.zip archive via curl. A curl invocation referencing this archive name is a high-fidelity exfiltration indicator.

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Suspicious COOKIE SPIDER macOS Data Exfiltration via curl Archive Upload (via process_creation)
Pivot detection · T1041 · 9 related

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