Suspicious Python Inline Exec Execution in STARKVEIL Chain

PremiumReviewedSigma · Medium · v1
Category
process_creation
Author
HuntRule
Published
2026-07-08
Updated
2026-08-28

ATT&CK techniques

Execution
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Persistence

  5. Priv Esc

  6. Defense Evasion

  7. Cred Access

  8. Discovery

  9. Lateral Movement

  10. Collection

  11. C2

  12. Exfiltration

  13. Impact

What it detects

This rule detects the Python interpreter executing an inline exec statement passed on the command line, matching the STARKVEIL dropper chain that pivots through py.exe to decode and run staged code from fake AI-themed websites. Attackers use this living-off-the-land step to run obfuscated loaders and deploy the XWORM and FROSTRIFT backdoors.

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Suspicious Python Inline Exec Execution in STARKVEIL Chain
Pivot detection · T1059.001 · 9 related

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