Detection rules › Sigma

Roles Activated Too Frequently

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

Identifies when the same privilege role has multiple activations by the same user.

MITRE ATT&CK coverage

TacticTechniques
Initial AccessT1078 Valid Accounts
PersistenceT1078 Valid Accounts
Privilege EscalationT1078 Valid Accounts
StealthT1078 Valid Accounts

Rule body yaml

title: Roles Activated Too Frequently
id: 645fd80d-6c07-435b-9e06-7bc1b5656cba
status: test
description: Identifies when the same privilege role has multiple activations by the same user.
references:
    - https://learn.microsoft.com/en-us/entra/id-governance/privileged-identity-management/pim-how-to-configure-security-alerts#roles-are-being-activated-too-frequently
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: 'sequentialActivationRenewalsAlertIncident'
    condition: selection
falsepositives:
    - Investigate where if active time period for a role is set too short.
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    riskEventType: 'sequentialActivationRenewalsAlertIncident'

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
riskEventTypeeq
  • sequentialActivationRenewalsAlertIncident