huntrule

Windows Registry: Enable RDP Remote Assistance via fAllowToGetHelp

Alerts when Windows enables remote assistance via Terminal Server fAllowToGetHelp (0x1) registry change.

FreeReviewedSigma · Medium · v1
Product
windows
Category
registry_set
Author
frack113 (SigmaHQ), DRL 1.1
Published
2022-08-19
Updated
2026-07-30
AnalysisDetection

ATT&CK techniques

Persistence → Defense Evasion

  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 flags changes to the Windows Terminal Server setting fAllowToGetHelp being set to DWORD 0x00000001. Enabling this feature can allow remote help/assistance connections, which may be abused to gain interactive access. The detection relies on registry set telemetry for the specific value under System\CurrentControlSet\Control\Terminal Server\fAllowToGetHelp. Investigate to confirm the change was authorized and expected for the affected system.

Reporting behind it

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Malicious WDigest UseLogonCredential Enabled for Cleartext Credential Theft (via registry_set)
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Windows Registry: Enable RDP Remote Assistance via fAllowToGetHelp
Pivot detection · T1112 · 9 related

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