Malicious M365 Account Deletion by Unusual Users

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About the rule

Rule Type

Anomaly

Rule Description

Detects unauthorized deletions of user accounts by atypical actors.

Severity

Attention

Rule Requirement

Criteria

Action1: actionname = "DETECTION_ACTION_M365_USER_DELETED" | 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