Suspicious Curl Download and Script Execution Chain via Command Line

PremiumReviewedSigma · High · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-07-05
Updated
2026-08-28

ATT&CK techniques

Execution → C2
  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. Exfiltration

  12. Impact

What it detects

This rule detects a single command line that downloads an archive with curl, expands it with PowerShell, and executes a VBScript with wscript, matching the PyLangGhost RAT initial delivery chain. This staged download-and-run pattern is characteristic of fake job-interview lures deploying Python-based RATs.

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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.