{"id":"c7d16cae-aaf3-42e5-9c1c-fb8553faa6fa","title":"Failed MSExchange Transport Agent Installation","description":"Detects a failed installation of a Exchange Transport Agent","author":"Tobias Michalski (Nextron Systems)","status":"test","level":"high","date":"2021-06-08","modified":"2022-07-12","tags":["attack.persistence","attack.t1505.002"],"technique_ids":["T1505.002"],"logsource":{"service":"msexchange-management","product":"windows"},"falsepositives":["Legitimate installations of exchange TransportAgents. AssemblyPath is a good indicator for this."],"references":["https://speakerdeck.com/heirhabarov/hunting-for-persistence-via-microsoft-exchange-server-or-outlook?slide=8"],"source_path":"rules/windows/builtin/msexchange/win_exchange_transportagent_failed.yml","source_sha256":"d8dabf9fea7c0e5898da2332fde2e97513092be90f9797893f1fc98acb7f4d1b","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/builtin/msexchange/win_exchange_transportagent_failed.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Failed MSExchange Transport Agent Installation\nid: c7d16cae-aaf3-42e5-9c1c-fb8553faa6fa\nstatus: test\ndescription: Detects a failed installation of a Exchange Transport Agent\nreferences:\n    - https://speakerdeck.com/heirhabarov/hunting-for-persistence-via-microsoft-exchange-server-or-outlook?slide=8\nauthor: Tobias Michalski (Nextron Systems)\ndate: 2021-06-08\nmodified: 2022-07-12\ntags:\n    - attack.persistence\n    - attack.t1505.002\nlogsource:\n    service: msexchange-management\n    product: windows\n    # warning: The 'data' field used in the detection section is the container for the event data as a whole. You may have to adapt the rule for your backend accordingly\ndetection:\n    selection:\n        EventID: 6\n        Data|contains: 'Install-TransportAgent'\n    condition: selection\nfalsepositives:\n    - Legitimate installations of exchange TransportAgents. AssemblyPath is a good indicator for this.\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1505.002","id":"T1505.002","name":"Transport Agent","page":"techniques/enterprise/T1505.002/"}],"data_path":"data/detection-rules/c7d16cae-aaf3-42e5-9c1c-fb8553faa6fa.json","kind":"sigma"}