Analytics BIOC Low

ADFS DKM Key Access

ADFS DKM key attribute (thumbnailphoto) access in AD container, potential Golden SAML token forging attempt.

Module:
Identity Threat Detection (ITDR)
Licensed by:
Identity Threat Detection (ITDR)
Data source:
Windows Event Collector, XDR Agent with eXtended Threat Hunting (XTH)
ATT&CK tactics: Credential Access (TA0006)
ATT&CK techniques: Forge Web Credentials: SAML Tokens (T1606.002)
Detector tags: Active Directory Federation Services Analytics
Attacker's goals:

The attack goal is to forge a valid SAML token to impersonate any user and gain persistent, unauthorized access to cloud resources, effectively bypassing MFA and standard security controls.

Investigative actions:

Check for recent changes to the SAML signing certificate on both the Identity Provider and the Service Provider to rule out a configuration drift or expiration issue. Check for other correlated alerts on on-premises systems that may be related to the Golden SAML attack. Look for signs that the user account is compromised (e.g. abnormal logins, unusual activity).

Test period:
N/A (single event)
Deduplication:
1 Day