Wdigest CredGuard Registry Modification

Title: Wdigest CredGuard Registry Modification
Status: test
Description: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.
References:
  -https://teamhydra.blog/2020/08/25/bypassing-credential-guard/
Author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
Date: 2019-08-25
modified:2021-11-27
Tags:

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

Logsource:

• category: registry_event
• product: windows

Detection:
  selection:
    TargetObject|endswith: '\IsCredGuardEnabled'
  condition:selection
Falsepositives:
  -Unknown
Level: high