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MediumMicrosoft Sentinel analytics

full_access_as_app Granted To Application

This detection looks for the full_access_as_app permission being granted to an OAuth application with Admin Consent. This permission provide access to all Exchange mailboxes via the EWS API can could be exploited to…

Description

This detection looks for the full_access_as_app permission being granted to an OAuth application with Admin Consent. This permission provide access to all Exchange mailboxes via the EWS API can could be exploited to access sensitive data by being added to a compromised application. The application granted this permission should be reviewed to ensure that it is absolutely necessary for the applications function. Ref: https://learn.microsoft.com/graph/auth-limit-mailbox-access

Detection logic

Detection requirements

Platform
ContainersIaaSIdentity ProviderOffice SuiteSaaS

The rule states no platform. This is derived from the ATT&CK technique it maps to.

Log source product
azureactivedirectory
Log source service
auditlogs

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