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Microsoft 365 - User Restricted from Sending Email

Detects when a Security Compliance Center reported a user who exceeded sending limits of the service policies and because of this has been restricted from sending email.

MITRE ATT&CK

T1199

initial-access

Detection Query

selection:
  eventSource: SecurityComplianceCenter
  eventName: User restricted from sending email
  status: success
condition: selection

Author

austinsonger

Created

2021-08-19

Data Sources

m365threat_management

Platforms

m365

References

Tags

attack.initial-accessattack.t1199

Raw Content

title: Microsoft 365 - User Restricted from Sending Email
id: ff246f56-7f24-402a-baca-b86540e3925c
status: test
description: Detects when a Security Compliance Center reported a user who exceeded sending limits of the service policies and because of this has been restricted from sending email.
references:
    - https://learn.microsoft.com/en-us/defender-cloud-apps/anomaly-detection-policy
    - https://learn.microsoft.com/en-us/defender-cloud-apps/policy-template-reference
author: austinsonger
date: 2021-08-19
modified: 2022-10-09
tags:
    - attack.initial-access
    - attack.t1199
logsource:
    service: threat_management
    product: m365
detection:
    selection:
        eventSource: SecurityComplianceCenter
        eventName: 'User restricted from sending email'
        status: success
    condition: selection
falsepositives:
    - Unknown
level: medium