Azure Global Administrator Role Addition to PIM User

Identifies an Azure Active Directory (AD) Global Administrator role addition to a Privileged Identity Management (PIM) user account. PIM is a service that enables you to manage, control, and monitor access to important resources in an organization. Users who are assigned to the Global administrator role can read and modify any administrative setting in your Azure AD organization.

Rule type: query

Rule indices:

filebeat-*
logs-azure*

Severity: high

Risk score: 73

Runs every: 5m

Searches indices from: None (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

https://docs.microsoft.com/en-us/azure/active-directory/users-groups-roles/directory-assign-admin-roles

Tags:

Domain: Cloud
Data Source: Azure
Use Case: Identity and Access Audit
Tactic: Persistence

Version: 102

Rule authors:

Elastic

Rule license: Elastic License v2

Investigation guide

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Setup

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The Azure Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule.

Rule query

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event.dataset:azure.auditlogs and azure.auditlogs.properties.category:RoleManagement and
    azure.auditlogs.operation_name:("Add eligible member to role in PIM completed (permanent)" or
                                    "Add member to role in PIM completed (timebound)") and
    azure.auditlogs.properties.target_resources.*.display_name:"Global Administrator" and
    event.outcome:(Success or success)

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Persistence
- ID: TA0003
- Reference URL: https://attack.mitre.org/tactics/TA0003/
Technique:
- Name: Account Manipulation
- ID: T1098
- Reference URL: https://attack.mitre.org/techniques/T1098/

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