Detection rules › Sigma

Roles Activation Doesn't Require MFA

Status
test
Severity
high
Log source
product azure, service pim
Author
Mark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo'
Source
github.com/SigmaHQ/sigma

Identifies when a privilege role can be activated without performing mfa.

Known false positives

  • Investigate if user is performing MFA at sign-in.

MITRE ATT&CK coverage

TacticTechniques
Initial Access
Persistence
Privilege Escalation
Stealth

Rule body

title: Roles Activation Doesn't Require MFA
id: 94a66f46-5b64-46ce-80b2-75dcbe627cc0
status: test
description: Identifies when a privilege role can be activated without performing mfa.
references:
    - https://learn.microsoft.com/en-us/entra/id-governance/privileged-identity-management/pim-how-to-configure-security-alerts#roles-dont-require-multi-factor-authentication-for-activation
author: Mark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo'
date: 2023-09-14
tags:
    - attack.initial-access
    - attack.stealth
    - attack.t1078
    - attack.persistence
    - attack.privilege-escalation
logsource:
    product: azure
    service: pim
detection:
    selection:
        riskEventType: 'noMfaOnRoleActivationAlertIncident'
    condition: selection
falsepositives:
    - Investigate if user is performing MFA at sign-in.
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    riskEventType: 'noMfaOnRoleActivationAlertIncident'

Indicators

These rows show field, operator, and value matches.