Anomalous Token

 Original Source: [Sigma source]
Title: Anomalous Token
Status: test
Description:Indicates that there are abnormal characteristics in the token such as an unusual token lifetime or a token that is played from an unfamiliar location.
References:
  -https://learn.microsoft.com/en-us/entra/id-protection/concept-identity-protection-risks#anomalous-token
  -https://learn.microsoft.com/en-us/entra/architecture/security-operations-user-accounts#unusual-sign-ins
Author: Mark Morowczynski '@markmorow'
Date: 2023-08-07
modified:None
Tags:
  • -'attack.t1528'
  • -'attack.credential-access'
Logsource:
  • product: azure
  • service: riskdetection
Detection:
  selection:
    riskEventType: 'anomalousToken'
  condition:selection
Falsepositives:
  -We recommend investigating the sessions flagged by this detection in the context of other sign-ins from the user.
Level: high