{"id":"1193d960-2369-499f-a158-7b50a31df682","title":"Potential Suspicious Browser Launch From Document Reader Process","description":"Detects when a browser process or browser tab is launched from an application that handles document files such as Adobe, Microsoft Office, etc. And connects to a web application over http(s), this could indicate a possible phishing attempt.\n","author":"Joseph Kamau","status":"test","level":"medium","date":"2024-05-27","modified":"2025-10-07","tags":["attack.execution","attack.t1204.002"],"technique_ids":["T1204.002"],"logsource":{"product":"windows","category":"process_creation"},"falsepositives":["Unlikely in most cases, further investigation should be done in the commandline of the browser process to determine the context of the URL accessed."],"references":["https://app.any.run/tasks/69c5abaa-92ad-45ba-8c53-c11e23e05d04/","https://app.any.run/tasks/64043a79-165f-4052-bcba-e6e49f847ec1/"],"source_path":"rules/windows/process_creation/proc_creation_win_susp_browser_launch_from_document_reader_process.yml","source_sha256":"fa78456ddc8ac8dd0d285fcf3d674ff393c2239d99fb4e5930c5ec738f9a2bc7","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_susp_browser_launch_from_document_reader_process.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Potential Suspicious Browser Launch From Document Reader Process\nid: 1193d960-2369-499f-a158-7b50a31df682\nstatus: test\ndescription: |\n    Detects when a browser process or browser tab is launched from an application that handles document files such as Adobe, Microsoft Office, etc. And connects to a web application over http(s), this could indicate a possible phishing attempt.\nreferences:\n    - https://app.any.run/tasks/69c5abaa-92ad-45ba-8c53-c11e23e05d04/ # PDF Document\n    - https://app.any.run/tasks/64043a79-165f-4052-bcba-e6e49f847ec1/ # Office Document\nauthor: Joseph Kamau\ndate: 2024-05-27\nmodified: 2025-10-07\ntags:\n    - attack.execution\n    - attack.t1204.002\nlogsource:\n    product: windows\n    category: process_creation\ndetection:\n    selection:\n        ParentImage|contains:\n            - 'Acrobat Reader'\n            - 'Microsoft Office'\n            - 'PDF Reader'\n        Image|endswith:\n            - '\\brave.exe'\n            - '\\chrome.exe'\n            - '\\firefox.exe'\n            - '\\msedge.exe'\n            - '\\opera.exe'\n            - '\\maxthon.exe'\n            - '\\seamonkey.exe'\n            - '\\vivaldi.exe'\n        CommandLine|contains: 'http'\n    filter_main_microsoft_help:\n        CommandLine|contains: 'https://go.microsoft.com/fwlink/'\n    filter_optional_foxit:\n        CommandLine|contains:\n            - 'http://ad.foxitsoftware.com/adlog.php?'\n            - 'https://globe-map.foxitservice.com/go.php?do=redirect'\n    condition: selection and not 1 of filter_main_* and not 1 of filter_optional_*\nfalsepositives:\n    - Unlikely in most cases, further investigation should be done in the commandline of the browser process to determine the context of the URL accessed.\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1204.002","id":"T1204.002","name":"Malicious File","page":"techniques/enterprise/T1204.002/"}],"data_path":"data/detection-rules/1193d960-2369-499f-a158-7b50a31df682.json","kind":"sigma"}