{"id":"f9df325d-d7bc-4a32-8a1a-2cc61dcefc63","title":"Third Party Software DLL Sideloading","description":"Detects DLL sideloading of DLLs that are part of third party software (zoom, discord....etc)","author":"Nasreddine Bencherchali (Nextron Systems), Wietze Beukema (project and research)","status":"test","level":"medium","date":"2022-08-17","modified":"","tags":["attack.persistence","attack.privilege-escalation","attack.execution","attack.stealth","attack.t1574.001"],"technique_ids":["T1574.001"],"logsource":{"category":"image_load","product":"windows"},"falsepositives":["Unknown"],"references":["https://hijacklibs.net/"],"source_path":"rules/windows/image_load/image_load_side_load_third_party.yml","source_sha256":"507cea89ecb0124f44c259f1b8ea86c7865669054bb6e9b37eb165cf6278dd44","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/image_load/image_load_side_load_third_party.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Third Party Software DLL Sideloading\nid: f9df325d-d7bc-4a32-8a1a-2cc61dcefc63\nstatus: test\ndescription: Detects DLL sideloading of DLLs that are part of third party software (zoom, discord....etc)\nreferences:\n    - https://hijacklibs.net/ # For list of DLLs that could be sideloaded (search for dlls mentioned here in there)\nauthor: Nasreddine Bencherchali (Nextron Systems), Wietze Beukema (project and research)\ndate: 2022-08-17\ntags:\n    - attack.persistence\n    - attack.privilege-escalation\n    - attack.execution\n    - attack.stealth\n    - attack.t1574.001\nlogsource:\n    category: image_load\n    product: windows\ndetection:\n    # Lenovo\n    selection_lenovo:\n        ImageLoaded|endswith: '\\commfunc.dll'\n    filter_lenovo:\n        - ImageLoaded|contains: '\\AppData\\local\\Google\\Chrome\\Application\\'\n        - ImageLoaded|startswith:\n              - 'C:\\Program Files\\Lenovo\\Communications Utility\\'\n              - 'C:\\Program Files (x86)\\Lenovo\\Communications Utility\\'\n    # Toshiba\n    selection_toshiba:\n        ImageLoaded|endswith: '\\tosbtkbd.dll'\n    filter_toshiba:\n        ImageLoaded|startswith:\n            - 'C:\\Program Files\\Toshiba\\Bluetooth Toshiba Stack\\'\n            - 'C:\\Program Files (x86)\\Toshiba\\Bluetooth Toshiba Stack\\'\n    # Zoom (FP with System32)\n    # selection_zoom:\n    #     ImageLoaded|endswith: '\\version.dll'\n    # filter_zoom:\n    #     ImageLoaded|startswith: 'C:\\Users\\'\n    #     ImageLoaded|contains: '\\AppData\\Roaming\\Zoom\\bin\\'\n    condition: (selection_lenovo and not filter_lenovo) or (selection_toshiba and not filter_toshiba)\nfalsepositives:\n    - Unknown\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1574.001","id":"T1574.001","name":"DLL","page":"techniques/enterprise/T1574.001/"}],"data_path":"data/detection-rules/f9df325d-d7bc-4a32-8a1a-2cc61dcefc63.json","kind":"sigma"}