PIM Approvals And Deny Elevation — Sigma Rule

Rule metadata and linked tags

Author: Mark Morowczynski '@markmorow', Yochana Henderson, '@Yochana-H'. Source status: test; severity: high. Source dates: 2022-08-09 / not supplied.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 3bdad1a8fe9d771f8415fb7f7123d4b39cfe2befce991ce2bd644a189ae09788

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: PIM Approvals And Deny Elevation
id: 039a7469-0296-4450-84c0-f6966b16dc6d
status: test
description: Detects when a PIM elevation is approved or denied. Outside of normal operations should be investigated.
references:
    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-privileged-identity-management#azure-ad-roles-assignment
author: Mark Morowczynski '@markmorow', Yochana Henderson, '@Yochana-H'
date: 2022-08-09
tags:
    - attack.persistence
    - attack.initial-access
    - attack.privilege-escalation
    - attack.stealth
    - attack.t1078.004
logsource:
    product: azure
    service: auditlogs
detection:
    selection:
        properties.message: Request Approved/Denied
    condition: selection
falsepositives:
    - Actual admin using PIM.
level: high

Original YAML and metadata in JSON

False positives

• Actual admin using PIM.

Source references

• https://learn.microsoft.com/en-us/entra/architecture/security-operations-privileged-identity-management#azure-ad-roles-assignment