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Detectionhightest

Enable LM Hash Storage

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.

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Launch
Nasreddine Bencherchali (Nextron Systems)Created Fri Dec 15c420410f-c2d8-4010-856b-dffe21866437windows
Log Source
WindowsRegistry Set
ProductWindows← raw: windows
CategoryRegistry Set← raw: registry_set
Detection Logic
Detection Logic1 selector
detection:
    selection:
        TargetObject|endswith: 'System\CurrentControlSet\Control\Lsa\NoLMHash'
        Details: 'DWORD (0x00000000)'
    condition: selection
False Positives
Unknown

False positive likelihood has not been assessed. Additional context may be needed during triage.

References
1
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cisa.gov
2
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learn.microsoft.com
3
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sans.org
MITRE ATT&CK
Related Rules
SimilarDetectionhigh

Enable LM Hash Storage - ProcCreation

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.

Detects similar activity. Both rules may fire on overlapping events.

Rule Metadata
Rule ID
c420410f-c2d8-4010-856b-dffe21866437
Status
test
Level
high
Type
Detection
Created
Fri Dec 15
Author
Nasreddine Bencherchali (Nextron Systems)
Path
rules/windows/registry/registry_set/registry_set_system_lsa_nolmhash.yml
Raw Tags
attack.persistenceattack.defense-evasionattack.t1112
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