Suspicious ThrottleStop Driver Abuse for Defense Evasion in Ransomware Attacks

PremiumReviewedSigma · Medium · v1
Category
process_creation
Author
HuntRule
Published
2026-09-11
Updated
2026-09-11

ATT&CK techniques

  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Cred Access

  9. Discovery

  10. Lateral Movement

  11. Collection

  12. C2

  13. Exfiltration

  14. Impact

What it detects

This rule detects execution of the ThrottleStop utility which ships a vulnerable driver abused to disable endpoint protection. Ransomware operators in Japanese incidents load ThrottleStop as part of their EDR-killer tooling before encryption. Bring-your-own-vulnerable-driver tools let an actor terminate security software from kernel space.

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Malicious Microsoft Defender Real-Time Monitoring Disabled via Set-MpPreference (via process_creation)
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Suspicious ThrottleStop Driver Abuse for Defense Evasion in Ransomware Attacks
Pivot detection · T1685 · 9 related

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