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Detectionhightest

Hidden Local User Creation

Detects the creation of a local hidden user account which should not happen for event ID 4720.

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Christian Burkard (Nextron Systems)Created Mon May 03Updated Tue Jan 167b449a5e-1db5-4dd0-a2dc-4e3a67282538windows
Log Source
Windowssecurity
ProductWindows← raw: windows
Servicesecurity← raw: security
Detection Logic
Detection Logic2 selectors
detection:
    selection:
        EventID: 4720
        TargetUserName|endswith: '$'
    filter_main_homegroup:
        TargetUserName: 'HomeGroupUser$'
    condition: selection and not 1 of filter_main_*
False Positives
Unknown

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

References
1
Resolving title…
twitter.com
MITRE ATT&CK
Rule Metadata
Rule ID
7b449a5e-1db5-4dd0-a2dc-4e3a67282538
Status
test
Level
high
Type
Detection
Created
Mon May 03
Modified
Tue Jan 16
Author
Christian Burkard (Nextron Systems)
Path
rules/windows/builtin/security/win_security_hidden_user_creation.yml
Raw Tags
attack.persistenceattack.t1136.001
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