Authentications To Important Apps Using Single Factor Authentication — Sigma Rule

Rule metadata and linked tags

Author: MikeDuddington, '@dudders1'. Source status: test; severity: medium. Source dates: 2022-07-28 / not supplied.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: cb486188dbc8b8401475023541b094d31fe9629269d7c049a830c53896650836

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: Authentications To Important Apps Using Single Factor Authentication
id: f272fb46-25f2-422c-b667-45837994980f
status: test
description: Detect when authentications to important application(s) only required single-factor authentication
references:
    - https://learn.microsoft.com/en-gb/entra/architecture/security-operations-user-accounts
author: MikeDuddington, '@dudders1'
date: 2022-07-28
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.initial-access
    - attack.stealth
    - attack.t1078
logsource:
    product: azure
    service: signinlogs
detection:
    selection:
        Status: 'Success'
        AppId: 'Insert Application ID use OR for multiple'
        AuthenticationRequirement: 'singleFactorAuthentication'
    condition: selection
falsepositives:
    - If this was approved by System Administrator.
level: medium

Original YAML and metadata in JSON

False positives

• If this was approved by System Administrator.

Source references

• https://learn.microsoft.com/en-gb/entra/architecture/security-operations-user-accounts