Suspicious Scheduled Task Created From XML Definition (via process_creation)

PremiumReviewedSigma · Medium · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-09-10
Updated
2026-09-10

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 schtasks creating a task from an external XML definition file which the Cosmic Leopard Windows component uses to establish persistence. Importing a task from an XML blob lets attackers set arbitrary triggers and actions while avoiding inline command inspection.

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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.