Posture check · Group Policy
Group Policy allows LAN Manager password hashes to be stored (T1003, T1110.002)
This policy turns off 'Do not store LAN Manager hash value on next password change'.
Why it matters
LAN Manager hashes are cracked in minutes. On a domain controller, this exposes every domain account that changes its password.
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
gPLink,gPOptions,flags,userAccountControl,accountEnabledanddistinguishedName - The Group Policy files the Identity Bridge reads from SYSVOL
Tiered Fidelity™ level: Theoretical
Every finding from this check carries the Theoretical level.
- TheoreticalThis checkConfigured in the directory. Nothing else checked.
- ConstrainedA constraint on it has been checked.
- ValidatedTelemetry has seen it in use.
Why there's no automatic fix
GraphnAI can't edit Group Policy settings. Change this setting in Group Policy Management.
How to fix it
Enable 'Do not store LAN Manager hash value on next password change' and have affected accounts change their passwords.
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.
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