Posture check · Delegation and Kerberos
Constrained delegation to a sensitive service (T1558, T1550.003)
This account may delegate to a service on a domain controller, a Tier 0 system, the domain's Kerberos service or the Microsoft Entra single sign-on computer account (AZUREADSSOACC).
Why it matters
Control of this account is enough to reach that service as any user.
How GraphnAI finds it
It runs after every sync, on each connected domain or tenant on its own. It applies to Active Directory.
It reads:
- The directory attributes
msDS-AllowedToDelegateTo,accountEnabled,dNSHostName,servicePrincipalName,sAMAccountName,objectSidanduserAccountControl - The privilege tier classification
- The domain's service name aliases (sPNMappings)
Tiered Fidelity™ level: Constrained
Every finding from this check carries the Constrained level.
- TheoreticalConfigured in the directory. Nothing else checked.
- ConstrainedThis checkA constraint on it has been checked.
- ValidatedTelemetry has seen it in use.
How Select Fire™ fixes it
How to fix it
Remove the sensitive entries from the account's delegation list. Keep only the services the application needs.
What Select Fire changes
Select Fire opens from the finding and simulates each change on your live graph before anything changes in your directory.
- Change constrained delegationSemi-Auto: you authorize each change. Full-Auto never runs it.
The account can no longer reach the sensitive services on behalf of users. Its other delegation entries stay as they are. Changing this list needs an account allowed to enable delegation.
By hand: Remove the sensitive entries from the account's delegation list in its properties.
Related checks
MITRE ATT&CK® technique names and MITRE D3FEND™ technique labels: © The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. ATT&CK® is a registered trademark and D3FEND™ a trademark of The MITRE Corporation.
See it on your own directory.
The Public Preview is free for 30 days from your first sync, on your own server.