Anonymous IP Address
Indicates sign-ins from an anonymous IP address, for example, using an anonymous browser or VPN.
Sigma rule (View on GitHub)
1title: Anonymous IP Address
2id: 53acd925-2003-440d-a1f3-71a5253fe237
3status: test
4description: Indicates sign-ins from an anonymous IP address, for example, using an anonymous browser or VPN.
5references:
6 - https://learn.microsoft.com/en-us/graph/api/resources/riskdetection?view=graph-rest-1.0
7 - https://learn.microsoft.com/en-us/entra/id-protection/concept-identity-protection-risks#anonymous-ip-address
8author: Gloria Lee, '@gleeiamglo'
9date: 2023-08-22
10tags:
11 - attack.t1528
12 - attack.credential-access
13logsource:
14 product: azure
15 service: riskdetection
16detection:
17 selection:
18 riskEventType: 'anonymizedIPAddress'
19 condition: selection
20falsepositives:
21 - We recommend investigating the sessions flagged by this detection in the context of other sign-ins
22level: high
References
Related rules
- Anomalous Token
- App Granted Microsoft Permissions
- Application URI Configuration Changes
- Delegated Permissions Granted For All Users
- End User Consent