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Detection rules › Sigma

Changes To PIM Settings

Status
test
Severity
high
Log source
product azure, service auditlogs
Author
Mark Morowczynski '@markmorow', Yochana Henderson, '@Yochana-H'
Source
github.com/SigmaHQ/sigma

Detects when changes are made to PIM roles

MITRE ATT&CK coverage

TacticTechniques
Initial AccessT1078.004 Valid Accounts: Cloud Accounts
PersistenceT1078.004 Valid Accounts: Cloud Accounts
Privilege EscalationT1078.004 Valid Accounts: Cloud Accounts
StealthT1078.004 Valid Accounts: Cloud Accounts

Rule body yaml

title: Changes To PIM Settings
id: db6c06c4-bf3b-421c-aa88-15672b88c743
status: test
description: Detects when changes are made to PIM roles
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.initial-access
    - attack.privilege-escalation
    - attack.persistence
    - attack.stealth
    - attack.t1078.004
logsource:
    product: azure
    service: auditlogs
detection:
    selection:
        properties.message: Update role setting in PIM
    condition: selection
falsepositives:
    - Legit administrative PIM setting configuration changes
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    properties.message: Update role setting in PIM

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
properties.messageeq
  • Update role setting in PIM