Elastic Security Detection Rules

Azure RBAC Built-In Administrator Roles Assigned

Last updated 22 days ago on 2025-09-15
Created 22 days ago on 2025-09-15

About

Identifies when a user is assigned a built-in administrator role in Azure RBAC (Role-Based Access Control). These roles provide significant privileges and can be abused by attackers for lateral movement, persistence, or privilege escalation. The privileged built-in administrator roles include Owner, Contributor, User Access Administrator, Azure File Sync Administrator, Reservations Administrator, and Role Based Access Control Administrator.
Tags
Domain: CloudData Source: AzureData Source: Azure Activity LogsUse Case: Identity and Access AuditTactic: Privilege EscalationLanguage: kuery
Severity
high
Risk Score
73
MITRE ATT&CK™

Privilege Escalation (TA0004)(opens in a new tab or window)

↳ Account Manipulation (T1098)(opens in a new tab or window)

License
Elastic License v2(opens in a new tab or window)

Definition

Rule Type
Query (Kibana Query Language)
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
filebeat-*logs-azure.activitylogs-*
Related Integrations

azure(opens in a new tab or window)

Query
event.dataset: azure.activitylogs and
    event.action: "MICROSOFT.AUTHORIZATION/ROLEASSIGNMENTS/WRITE" and
    azure.activitylogs.properties.requestbody.properties.roleDefinitionId:
    (
      *18d7d88d-d35e-4fb5-a5c3-7773c20a72d9* or
      *f58310d9-a9f6-439a-9e8d-f62e7b41a168* or
      *b24988ac-6180-42a0-ab88-20f7382dd24c* or
      *8e3af657-a8ff-443c-a75c-2fe8c4bcb635* or
      *92b92042-07d9-4307-87f7-36a593fc5850* or
      *a8889054-8d42-49c9-bc1c-52486c10e7cd*
  )

Install detection rules in Elastic Security

Detect Azure RBAC Built-In Administrator Roles Assigned in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(opens in a new tab or window).