Suspicious Deletion of a Scheduled Task to Cover Tracks (via process_creation)

PremiumReviewedSigma · Medium · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-06-08
Updated
2026-08-28

ATT&CK techniques

Defense Evasion
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Cred Access

  8. Discovery

  9. Lateral Movement

  10. Collection

  11. C2

  12. Exfiltration

  13. Impact

What it detects

This rule detects schtasks being used to force-delete a scheduled task, a cleanup step attackers take to remove an execution or persistence artifact after it has served its purpose. Scheduled-task deletion is an indicator-removal technique noted in the Red Canary Threat Detection Report. Detecting the deletion surfaces anti-forensic activity around task-based execution.

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