{"id":"117d3d3a-755c-4a61-b23e-9171146d094c","title":"Suspicious Outlook Macro Created","description":"Detects the creation of a macro file for Outlook.","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"high","date":"2023-02-08","modified":"","tags":["attack.privilege-escalation","attack.persistence","attack.command-and-control","attack.t1137","attack.t1008","attack.t1546"],"technique_ids":["T1008","T1137","T1546"],"logsource":{"category":"file_event","product":"windows"},"falsepositives":["Unlikely"],"references":["https://www.mdsec.co.uk/2020/11/a-fresh-outlook-on-mail-based-persistence/","https://speakerdeck.com/heirhabarov/hunting-for-persistence-via-microsoft-exchange-server-or-outlook?slide=53","https://www.linkedin.com/pulse/outlook-backdoor-using-vba-samir-b-/"],"source_path":"rules/windows/file/file_event/file_event_win_office_outlook_susp_macro_creation.yml","source_sha256":"665cf89bf841499f4b3a24dfb72ee38ecb97eca9948918c5f78914aa64ba2ac4","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/file/file_event/file_event_win_office_outlook_susp_macro_creation.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Suspicious Outlook Macro Created\nid: 117d3d3a-755c-4a61-b23e-9171146d094c\nrelated:\n    - id: 8c31f563-f9a7-450c-bfa8-35f8f32f1f61\n      type: derived\nstatus: test\ndescription: Detects the creation of a macro file for Outlook.\nreferences:\n    - https://www.mdsec.co.uk/2020/11/a-fresh-outlook-on-mail-based-persistence/\n    - https://speakerdeck.com/heirhabarov/hunting-for-persistence-via-microsoft-exchange-server-or-outlook?slide=53\n    - https://www.linkedin.com/pulse/outlook-backdoor-using-vba-samir-b-/\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2023-02-08\ntags:\n    - attack.privilege-escalation\n    - attack.persistence\n    - attack.command-and-control\n    - attack.t1137\n    - attack.t1008\n    - attack.t1546\nlogsource:\n    category: file_event\n    product: windows\ndetection:\n    selection:\n        TargetFilename|endswith: '\\Microsoft\\Outlook\\VbaProject.OTM'\n    filter:\n        Image|endswith: '\\outlook.exe'\n    condition: selection and not filter\nfalsepositives:\n    - Unlikely\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1008","id":"T1008","name":"Fallback Channels","page":"techniques/enterprise/T1008/"},{"key":"enterprise/T1137","id":"T1137","name":"Office Application Startup","page":"techniques/enterprise/T1137/"},{"key":"enterprise/T1546","id":"T1546","name":"Event Triggered Execution","page":"techniques/enterprise/T1546/"}],"data_path":"data/detection-rules/117d3d3a-755c-4a61-b23e-9171146d094c.json","kind":"sigma"}