Sign-In From Malware Infected IP
Indicates sign-ins from IP addresses infected with malware that is known to actively communicate with a bot server.
Sigma rule (View on GitHub)
1title: Sign-In From Malware Infected IP
2id: 821b4dc3-1295-41e7-b157-39ab212dd6bd
3status: test
4description: Indicates sign-ins from IP addresses infected with malware that is known to actively communicate with a bot server.
5references:
6 - https://learn.microsoft.com/en-us/entra/id-protection/concept-identity-protection-risks#malware-linked-ip-address-deprecated
7 - https://learn.microsoft.com/en-us/entra/architecture/security-operations-user-accounts#unusual-sign-ins
8author: Mark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo'
9date: 2023-09-03
10tags:
11 - attack.t1090
12 - attack.command-and-control
13logsource:
14 product: azure
15 service: riskdetection
16detection:
17 selection:
18 riskEventType: 'malwareInfectedIPAddress'
19 condition: selection
20falsepositives:
21 - Using an IP address that is shared by many users
22level: high
References
-
Explore the full list of risk detections and their corresponding risk event types, along with a description of each risk event type.
Read More -
Guidance to establish baselines and how to monitor and alert on potential security issues with user accounts.
Read More
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