Suspicious PowerShell Spawned by cscript in Script Chain

PremiumReviewedSigma · Medium · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-09-13
Updated
2026-09-13

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 PowerShell being launched by cscript.exe, matching the GootLoader wscript to cscript to PowerShell execution chain. Attackers use this scripted lineage to stage the loader and pull down follow-on payloads while appearing script-driven. A Windows Script Host interpreter spawning PowerShell is a common malware-loader hand-off worth alerting on.

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