Privileged Account Creation — Sigma Rule

Rule metadata and linked tags

Author: Mark Morowczynski '@markmorow', Yochana Henderson, '@Yochana-H', Tim Shelton. Source status: test; severity: medium. Source dates: 2022-08-11 / 2022-08-16.

{
  "product": "azure",
  "service": "auditlogs"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: bde8a6a4645a8c2c35eb66a5042f379809561fb17e640a70035dbe2e24c38094

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Privileged Account Creation
id: f7b5b004-dece-46e4-a4a5-f6fd0e1c6947
status: test
description: Detects when a new admin is created.
references:
    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-privileged-accounts#changes-to-privileged-accounts
author: Mark Morowczynski '@markmorow', Yochana Henderson, '@Yochana-H', Tim Shelton
date: 2022-08-11
modified: 2022-08-16
tags:
    - attack.initial-access
    - attack.persistence
    - attack.privilege-escalation
    - attack.stealth
    - attack.t1078.004
logsource:
    product: azure
    service: auditlogs
detection:
    selection:
        properties.message|contains|all:
            - Add user
            - Add member to role
        Status: Success
    condition: selection
falsepositives:
    - A legitimate new admin account being created
level: medium

Original YAML and metadata in JSON

False positives

• A legitimate new admin account being created

Source references

• https://learn.microsoft.com/en-us/entra/architecture/security-operations-privileged-accounts#changes-to-privileged-accounts