{"id":"821b4dc3-1295-41e7-b157-39ab212dd6bd","title":"Sign-In From Malware Infected IP","description":"Indicates sign-ins from IP addresses infected with malware that is known to actively communicate with a bot server.","author":"Mark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo'","status":"test","level":"high","date":"2023-09-03","modified":"","tags":["attack.t1090","attack.command-and-control"],"technique_ids":["T1090"],"logsource":{"product":"azure","service":"riskdetection"},"falsepositives":["Using an IP address that is shared by many users"],"references":["https://learn.microsoft.com/en-us/entra/id-protection/concept-identity-protection-risks#malware-linked-ip-address-deprecated","https://learn.microsoft.com/en-us/entra/architecture/security-operations-user-accounts#unusual-sign-ins"],"source_path":"rules/cloud/azure/identity_protection/azure_identity_protection_malware_linked_ip.yml","source_sha256":"834d289c647351381b55cbd7f96d8b37415f3da7027449c1d577f73c4b801cee","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/cloud/azure/identity_protection/azure_identity_protection_malware_linked_ip.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Sign-In From Malware Infected IP\nid: 821b4dc3-1295-41e7-b157-39ab212dd6bd\nstatus: test\ndescription: Indicates sign-ins from IP addresses infected with malware that is known to actively communicate with a bot server.\nreferences:\n    - https://learn.microsoft.com/en-us/entra/id-protection/concept-identity-protection-risks#malware-linked-ip-address-deprecated\n    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-user-accounts#unusual-sign-ins\nauthor: Mark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo'\ndate: 2023-09-03\ntags:\n    - attack.t1090\n    - attack.command-and-control\nlogsource:\n    product: azure\n    service: riskdetection\ndetection:\n    selection:\n        riskEventType: 'malwareInfectedIPAddress'\n    condition: selection\nfalsepositives:\n    - Using an IP address that is shared by many users\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1090","id":"T1090","name":"Proxy","page":"techniques/enterprise/T1090/"}],"data_path":"data/detection-rules/821b4dc3-1295-41e7-b157-39ab212dd6bd.json","kind":"sigma"}