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28 lines
1.3 KiB
YAML
28 lines
1.3 KiB
YAML
title: Active Directory User Backdoors
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description: Detects scenarios where one can control another users account without having to use their credentials via msDS-AllowedToDelegateTo and or service principal names (SPN).
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references:
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- https://msdn.microsoft.com/en-us/library/cc220234.aspx
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- https://adsecurity.org/?p=3466
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author: '@neu5ron'
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logsource:
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product: windows
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service: security
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description1: 'Requirements: Audit Policy : Account Management > Audit User Account Management, Group Policy : Computer Configuration\Windows Settings\Security Settings\Advanced Audit Policy Configuration\Audit Policies\Account Management\Audit User Account Management'
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description2: 'Requirements: Audit Policy : DS Access > Audit Directory Service Changes, Group Policy : Computer Configuration\Windows Settings\Security Settings\Advanced Audit Policy Configuration\Audit Policies\DS Access\Audit Directory Service Changes'
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detection:
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selection1:
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EventID: 4738
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filter1:
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AllowedToDelegateTo: null
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selection2:
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EventID: 5136
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AttributeLDAPDisplayName: 'msDS-AllowedToDelegateTo'
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selection3:
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EventID: 5136
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ObjectClass: 'user'
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AttributeLDAPDisplayName: 'servicePrincipalName'
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condition: (selection1 and not filter1) or selection2 or selection3
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falsepositives:
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- Unknown
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level: high
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