Suspicious pythonw.exe Executing LICENSE.txt Downloader from AppData

PremiumReviewedSigma · High · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-05-12
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 a hidden pythonw.exe process launched from the AppData Local directory with a LICENSE.txt argument, matching an AI-themed lure that drops a Python downloader loading shellcode. Running a Python interpreter over a text file disguised as a license from a user writable path is a strong sign of staged malware execution.

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Suspicious pythonw.exe Executing LICENSE.txt Downloader from AppData
Pivot detection · T1059.006 · 9 related

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