Suspicious Payload Execution From Private Temp Directory via Process Creation

PremiumReviewedSigma · Medium · v1
Product
macos
Category
process_creation
Author
HuntRule
Published
2026-08-16
Updated
2026-08-28

ATT&CK techniques

C2
  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. Exfiltration

  13. Impact

What it detects

This rule detects execution of a binary located under the macOS private temp directory, the staging path used in the HM Surf exploitation chain to run a downloaded second-stage payload. Adversaries drop tools into world-writable temp locations and execute them there to evade scrutiny before establishing persistence.

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Suspicious Payload Execution From Private Temp Directory via Process Creation
Pivot detection · T1105 · 9 related

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