Entra ID collector
- Laszlo Frazer
Purpose
Use Entra ID logs to detect malicious authentication and privilege changes.
The Entra ID brand has replaced the Azure Active Directory brand.
The Entra ID collector works with over 2000 applications, including any application that supports a standard authentication method. Typically Entra ID is used with Microsoft’s cloud and on-premise products.
Authorize it
First, authorize an event hub. Then add Entra ID to the event hub.
Switch to the directory.
Add your Entra ID diagnostic settings. Devo recommends enabling all log options.
Run it
The Entra ID collector is run the same way as an Event Hub Azure collector.
Example tables
Table | Description |
|---|---|
cloud.azure.ad.* | Entra ID identity and access management logs. |
cloud.azure.ad.signin_all | This union table combines all the different Entra ID authentication logs. |
Authentication logs, including Entra ID. |
Secure it
The Authentication alert pack works with Entra ID data.
Find privilege escalation, including roles, groups, and administrative units. Unexpected privilege escalation may indicate a user intends to exfiltrate or destroy data.
from cloud.azure.ad.audit
where startswith(operationName,"Add"), toktains(operationName,"member to")
group by operationName as escalation_type,
properties_initiatedBy_user_displayName as actor,
properties_targetResources as targetA password reset or change may occur when an account is compromised.
from cloud.azure.ad.audit
where eq(operationName,"User started password reset") or
(weakhas(operationName,"change") and has(operationName,"password")) or
startswith(operationName,"Reset password")Get authentication risks detected by Microsoft.
from cloud.azure.ad.signin_all
where not eq(risk_state,"none"), isnotnull(risk_state)
group by user, risk_state, risk_detail
Monitor It
Create an inactivity alert to detect interruptions of transfer of data from the source to the event hub using the query
Set the inactivity alert to keep track of the monitor_collector_and_application_category. The alert will trigger if a particular collector no longer obtains login events for popular applications such as Office. This can occur if Office authentication is broken or if all users are on holiday.