Suspicious Scheduled Task Created by Windows Script Host

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

ATT&CK techniques

Execution → Priv Esc
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Defense Evasion

  5. Cred Access

  6. Discovery

  7. Lateral Movement

  8. Collection

  9. C2

  10. Exfiltration

  11. Impact

What it detects

This rule detects a logon-triggered scheduled task being created by wscript.exe or cscript.exe, the persistence step in the GootLoader infection chain. Attackers register a script-host scheduled task so the loader re-executes at each user logon. A Windows Script Host process registering a scheduled task is uncommon and points to script-based persistence.

Related detections9 linkedT1053.005 — drag to rearrange
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Malicious Scheduled Task Masquerading as Windows Defender Sync via schtasks (via process_creation)
Suspicious Scheduled Task Creation Launching mshta via schtasks (via process_creation)
Suspicious Service or Task Named windowsinspectionupdate (via process_creation)
Suspicious Scheduled Task Creation Referencing dllFake Batch Scripts (via process_creation)
Suspicious Scheduled Task Creation With WebDAV Loader Task Names (via process_creation)
Suspicious Scheduled Task Creation with ClickFix Update Recon Name (via process_creation)
Malicious Scheduled Task Named Gentlemen via Schtasks
Suspicious Scheduled Task Created by Windows Script Host
Pivot detection · T1053.005 · 9 related

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