Sigma Rule Library

Addition of SID History to Active Directory Object

An attacker can use the SID history attribute to gain additional privileges.

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Detection logic

selection1

EventID:
  - 4765
  - 4766

selection2

EventID: 4738

selection3

SidHistory:
  - "-"
  - "%%1793"

filter_null

SidHistory: null

Condition

selection1 or (selection2 and not selection3 and not filter_null)

Raw YAML

title: Addition of SID History to Active Directory Object
id: 2632954e-db1c-49cb-9936-67d1ef1d17d2
status: stable
description: An attacker can use the SID history attribute to gain additional privileges.
references:
    - https://adsecurity.org/?p=1772
author: Thomas Patzke, @atc_project (improvements)
date: 2017-02-19
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.stealth
    - attack.t1134.005
logsource:
    product: windows
    service: security
detection:
    selection1:
        EventID:
            - 4765
            - 4766
    selection2:
        EventID: 4738
    selection3:
        SidHistory:
            - '-'
            - '%%1793'
    filter_null:
        SidHistory:
    condition: selection1 or (selection2 and not selection3 and not filter_null)
falsepositives:
    - Migration of an account into a new domain
level: medium

False positives

  • Migration of an account into a new domain

References

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