Suspicious OilRig Scheduled Task Launching VBScript via Schtasks (via process_creation)

PremiumReviewedSigma · Medium · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-09-24
Updated
2026-09-24

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 the ReminderTask scheduled task used by OilRig's Outer Space and Juicy Mix backdoors to run a VBS dropper every 14 minutes. The recurring VBScript task provides both execution and persistence for the group's downloader chain.

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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.