Tanaka Zakku
55 lines
2.0 KiB
YAML
55 lines
2.0 KiB
YAML
title: Active Directory User Backdoors
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author: '@neu5ron'
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date: 2017/04/13
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description: Detects scenarios where one can control another users or computers account
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without having to use their credentials.
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detection:
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SELECTION_1:
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EventID: 4738
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SELECTION_10:
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AttributeLDAPDisplayName: msDS-AllowedToActOnBehalfOfOtherIdentity
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SELECTION_2:
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AllowedToDelegateTo: '-'
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SELECTION_3:
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AllowedToDelegateTo|re: ^$
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SELECTION_4:
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EventID: 5136
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SELECTION_5:
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AttributeLDAPDisplayName: msDS-AllowedToDelegateTo
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SELECTION_6:
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EventID: 5136
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SELECTION_7:
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ObjectClass: user
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SELECTION_8:
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AttributeLDAPDisplayName: servicePrincipalName
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SELECTION_9:
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EventID: 5136
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condition: (((((SELECTION_1 and not (SELECTION_2)) and not (SELECTION_3)) or
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(SELECTION_4 and SELECTION_5)) or (SELECTION_6 and SELECTION_7 and SELECTION_8))
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or (SELECTION_9 and SELECTION_10))
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falsepositives:
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- Unknown
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id: 300bac00-e041-4ee2-9c36-e262656a6ecc
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level: high
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logsource:
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definition: 'Requirements: Audit Policy : Account Management > Audit User Account
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Management, Group Policy : Computer Configuration\Windows Settings\Security
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Settings\Advanced Audit Policy Configuration\Audit Policies\Account Management\Audit
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User Account Management, DS Access > Audit Directory Service Changes, Group
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Policy : Computer Configuration\Windows Settings\Security Settings\Advanced
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Audit Policy Configuration\Audit Policies\DS Access\Audit Directory Service
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Changes'
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product: windows
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service: security
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modified: 2020/08/23
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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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- https://www.harmj0y.net/blog/redteaming/another-word-on-delegation/
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tags:
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- attack.t1098
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- attack.persistence
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yml_filename: win_alert_ad_user_backdoors.yml
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yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/builtin
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