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MediumMicrosoft Sentinel analyticsMicrosoft Security Research

Authentication Attempt from New Country

Detects when there is a login attempt from a country that has not seen a successful login in the previous 14 days. Threat actors may attempt to authenticate with credentials from compromised accounts - monitoring…

Description

Detects when there is a login attempt from a country that has not seen a successful login in the previous 14 days. Threat actors may attempt to authenticate with credentials from compromised accounts - monitoring attempts from anomalous locations may help identify these attempts. Authentication attempts should be investigated to ensure the activity was legitimate and if there is other similar activity. Ref: https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-user-accounts#monitoring-for-failed-unusual-sign-ins

Detection logic

Detection requirements

Platform
IaaSIdentity 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
aadnoninteractiveusersigninlogssigninlogs

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