Enable LM Hash Storage

Title: Enable LM Hash Storage
Status: test
Description:Detects changes to the "NoLMHash" registry value in order to allow Windows to store LM Hashes. By setting this registry value to "0" (DWORD), Windows will be allowed to store a LAN manager hash of your password in Active Directory and local SAM databases.
References:
  -https://www.cisa.gov/news-events/cybersecurity-advisories/aa23-347a
  -https://learn.microsoft.com/en-us/troubleshoot/windows-server/windows-security/prevent-windows-store-lm-hash-password
  -https://www.sans.org/blog/protecting-privileged-domain-accounts-lm-hashes-the-good-the-bad-and-the-ugly/
Author: Nasreddine Bencherchali (Nextron Systems)
Date: 2023-12-15
modified:None
Tags:

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

Logsource:

• product: windows
• category: registry_set

Detection:
  selection:
    TargetObject|endswith: 'System\CurrentControlSet\Control\Lsa\NoLMHash'
    Details: 'DWORD (0x00000000)'
  condition:selection
Falsepositives:
  -Unknown
Level: high