Sign-ins from Non-Compliant Devices — Sigma Rule

Rule metadata and linked tags

Author: Michael Epping, '@mepples21'. Source status: test; severity: high. Source dates: 2022-06-28 / not supplied.

{
  "product": "azure",
  "service": "signinlogs"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 50680ec1d46696a57f26ecdf7188df77883a137b6c902e587be9833e76605ea3

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Sign-ins from Non-Compliant Devices
id: 4f77e1d7-3982-4ee0-8489-abf2d6b75284
status: test
description: Monitor and alert for sign-ins where the device was non-compliant.
references:
    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-devices#non-compliant-device-sign-in
author: Michael Epping, '@mepples21'
date: 2022-06-28
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.initial-access
    - attack.stealth
    - attack.t1078.004
logsource:
    product: azure
    service: signinlogs
detection:
    selection:
        DeviceDetail.isCompliant: 'false'
    condition: selection
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://learn.microsoft.com/en-us/entra/architecture/security-operations-devices#non-compliant-device-sign-in