Anomalous M365 Account Extended Period Without Password Reset

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About the rule

Rule Type

Anomaly

Rule Description

Flags M365 accounts with unusually long durations between password changes.

Severity

Critical

Rule Requirement

Criteria

Action1: actionname = "DETECTION_ACTION_M365_USER_PASSWORD_RESET" | isanomalous(User at an unusual Time) | isanomalous(User with abnormal Count) select Action1.CALLER,Action1.TARGET,Action1.RESULT,Action1.MODIFIED_PROPERTIES_GD,Action1.TARGET_ID,Action1.OPERATION

Detection

Execution Mode

Intelligent

Log Sources

Microsoft 365