Elastic Security Detection Rules

External Authentication Method Addition or Modification in Entra ID

Last updated 19 days ago on 2025-07-14
Created 19 days ago on 2025-07-14

About

Identifies when an external authentication method (EAM) is added or modified in Entra ID. EAM may allow adversaries to bypass multi-factor authentication (MFA) requirements, potentially leading to unauthorized access to user accounts and sensitive resources by using bring-your-own IdP (BYOIDP) methods.
Tags
Domain: CloudDomain: IdentityData Source: AzureData Source: Microsoft GraphData Source: Microsoft Graph Activity LogsUse Case: Identity and Access AuditTactic: PersistenceLanguage: kuery
Severity
medium
Risk Score
47
MITRE ATT&CK™

Persistence (TA0003)(opens in a new tab or window)

↳ Modify Authentication Process (T1556)(opens in a new tab or window)

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

Definition

Rule Type
New Terms Rule
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
filebeat-*logs-azure.graphactivitylogs-*
Related Integrations

azure(opens in a new tab or window)

Query
event.dataset: azure.graphactivitylogs and
    url.path: *authenticationMethodsPolicy* and
    http.request.method: "PATCH" and
    http.response.status_code: 200

Install detection rules in Elastic Security

Detect External Authentication Method Addition or Modification in Entra ID 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).