Malicious XWorm Persistence via Minute-Interval Scheduled Task Named XClient (via process_creation)

PremiumReviewedSigma · High · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-08-31
Updated
2026-08-31

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 creation of a highly privileged scheduled task named XClient that runs every minute, the persistence mechanism used by recent XWorm infection chains to relaunch the RAT payload continuously. Adversaries leverage minute-interval tasks to survive reboots and process termination, making early detection of the XClient task critical for removing the implant before further tasking.

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Malicious XWorm Persistence via Minute-Interval Scheduled Task Named XClient (via process_creation)
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.