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MediumMicrosoft Sentinel analyticsMicrosoft Security Research

User State changed from Guest to Member

Detects when a guest account in a tenant is converted to a member of the tenant. Monitoring guest accounts and the access they are provided is important to detect potential account abuse. Accounts converted to…

Description

Detects when a guest account in a tenant is converted to a member of the tenant. Monitoring guest accounts and the access they are provided is important to detect potential account abuse. Accounts converted to members should be investigated to ensure the activity was legitimate. Ref: https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-user-accounts#monitoring-for-failed-unusual-sign-ins

Detection logic

Detection requirements

Platform
ContainersESXiIaaSIdentity ProviderLinuxmacOSNetwork DevicesOffice SuiteSaaSWindows

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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