Unfamiliar Sign-In Properties

Title: Unfamiliar Sign-In Properties
Status: test
Description:Detects sign-in with properties that are unfamiliar to the user. The detection considers past sign-in history to look for anomalous sign-ins.
References:
  -https://learn.microsoft.com/en-us/entra/id-protection/concept-identity-protection-risks#unfamiliar-sign-in-properties
  -https://learn.microsoft.com/en-us/entra/architecture/security-operations-user-accounts#unusual-sign-ins
Author: Mark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo'
Date: 2023-09-03
modified:None
Tags:

• -'attack.stealth'
• -'attack.t1078'
• -'attack.persistence'
• -'attack.privilege-escalation'
• -'attack.initial-access'

Logsource:

• product: azure
• service: riskdetection

Detection:
  selection:
    riskEventType: 'unfamiliarFeatures'
  condition:selection
Falsepositives:
  -User changing to a new device, location, browser, etc.
Level: high