{"id":"91c95675-1f27-46d0-bead-d1ae96b97cd3","title":"User Added To Group With CA Policy Modification Access","description":"Monitor and alert on group membership additions of groups that have CA policy modification access","author":"Mark Morowczynski '@markmorow', Thomas Detzner '@tdetzner'","status":"test","level":"medium","date":"2022-08-04","modified":"","tags":["attack.privilege-escalation","attack.credential-access","attack.persistence","attack.defense-impairment","attack.t1548","attack.t1556"],"technique_ids":["T1548","T1556"],"logsource":{"product":"azure","service":"auditlogs"},"falsepositives":["User removed from the group is approved"],"references":["https://learn.microsoft.com/en-us/entra/architecture/security-operations-infrastructure#conditional-access"],"source_path":"rules/cloud/azure/audit_logs/azure_group_user_addition_ca_modification.yml","source_sha256":"3650f972045b78ed28a8c2582b92781af8b0ad5ea5f7852881b62260b8d53ccb","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/cloud/azure/audit_logs/azure_group_user_addition_ca_modification.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: User Added To Group With CA Policy Modification Access\nid: 91c95675-1f27-46d0-bead-d1ae96b97cd3\nstatus: test\ndescription: Monitor and alert on group membership additions of groups that have CA policy modification access\nreferences:\n    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-infrastructure#conditional-access\nauthor: Mark Morowczynski '@markmorow', Thomas Detzner '@tdetzner'\ndate: 2022-08-04\ntags:\n    - attack.privilege-escalation\n    - attack.credential-access\n    - attack.persistence\n    - attack.defense-impairment\n    - attack.t1548\n    - attack.t1556\nlogsource:\n    product: azure\n    service: auditlogs\ndetection:\n    selection:\n        properties.message: Add member from group\n    condition: selection\nfalsepositives:\n    - User removed from the group is approved\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1548","id":"T1548","name":"Abuse Elevation Control Mechanism","page":"techniques/enterprise/T1548/"},{"key":"enterprise/T1556","id":"T1556","name":"Modify Authentication Process","page":"techniques/enterprise/T1556/"}],"data_path":"data/detection-rules/91c95675-1f27-46d0-bead-d1ae96b97cd3.json","kind":"sigma"}