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Detection rules › Sigma

Enabled User Right in AD to Control User Objects

Status
test
Severity
high
Log source
product windows, service security
Author
@neu5ron
Source
github.com/SigmaHQ/sigma

Detects scenario where if a user is assigned the SeEnableDelegationPrivilege right in Active Directory it would allow control of other AD user objects.

MITRE ATT&CK coverage

TacticTechniques
PersistenceT1098 Account Manipulation
Privilege EscalationT1098 Account Manipulation

Event coverage

ProviderEventTitle
Security-AuditingEvent ID 4704A user right was assigned.

Rule body yaml

title: Enabled User Right in AD to Control User Objects
id: 311b6ce2-7890-4383-a8c2-663a9f6b43cd
status: test
description: Detects scenario where if a user is assigned the SeEnableDelegationPrivilege right in Active Directory it would allow control of other AD user objects.
references:
    - https://blog.harmj0y.net/activedirectory/the-most-dangerous-user-right-you-probably-have-never-heard-of/
author: '@neu5ron'
date: 2017-07-30
modified: 2021-12-02
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.t1098
logsource:
    product: windows
    service: security
    definition: 'Requirements: Audit Policy : Policy Change > Audit Authorization Policy Change, Group Policy : Computer Configuration\Windows Settings\Security Settings\Advanced Audit Policy Configuration\Audit Policies\Policy Change\Audit Authorization Policy Change'
detection:
    selection_base:
        EventID: 4704
    selection_keywords:
        PrivilegeList|contains: 'SeEnableDelegationPrivilege'
    condition: all of selection*
falsepositives:
    - Unknown
level: high

Stages and Predicates

Stage 0: condition

all of selection*

Stage 1: selection_base

selection_base:
    EventID: 4704

Stage 2: selection_keywords

selection_keywords:
    PrivilegeList|contains: 'SeEnableDelegationPrivilege'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
PrivilegeListmatch
  • SeEnableDelegationPrivilege