Sigma rule: Wdigest CredGuard Registry Modification

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-78d1431f37f4, updated 2021-11-27T00:00:00.000Z.

Rule

Title
Wdigest CredGuard Registry Modification
Status
test
Level
high
Author
Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
Date
2019-08-25
Modified
2021-11-27
File
rules/windows/registry/registry_event/registry_event_disable_wdigest_credential_guard.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects potential malicious modification of the property value of IsCredGuardEnabled from
HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\WDigest to disable Cred Guard on a system.
This is usually used with UseLogonCredential to manipulate the caching credentials.

Log source

product
windows
category
registry_event

Detection

selection:
    TargetObject|endswith: '\IsCredGuardEnabled'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.persistence
  • attack.defense-impairment
  • attack.t1112

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/registry/registry_event/registry_event_disable_wdigest_credential_guard.yml

Sources and licences

  • SigmaHQ

    "Wdigest CredGuard Registry Modification" by Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/registry/registry_event/registry_event_disable_wdigest_credential_guard.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Wdigest CredGuard Registry Modification",
entity page, dataset version ref-78d1431f37f4, updated 2021-11-27T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/1a2d6c47-75b0-45bd-b133-2c0be75349fd (accessed 2026-11-03).
Underlying source: SigmaHQ rule 1a2d6c47-75b0-45bd-b133-2c0be75349fd, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.