{"id":"829a3bdf-34da-4051-9cf4-8ed221a8ae4f","title":"Microsoft Office DLL Sideload","description":"Detects DLL sideloading of DLLs that are part of Microsoft Office from non standard location","author":"Nasreddine Bencherchali (Nextron Systems), Wietze Beukema (project and research)","status":"test","level":"high","date":"2022-08-17","modified":"2023-03-15","tags":["attack.persistence","attack.privilege-escalation","attack.execution","attack.stealth","attack.t1574.001"],"technique_ids":["T1574.001"],"logsource":{"category":"image_load","product":"windows"},"falsepositives":["Unlikely"],"references":["https://hijacklibs.net/"],"source_path":"rules/windows/image_load/image_load_side_load_office_dlls.yml","source_sha256":"81818d92e060f7de1d29d6a68b446d864c84f2d33f684c8c1d779b17107985b6","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/image_load/image_load_side_load_office_dlls.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Microsoft Office DLL Sideload\nid: 829a3bdf-34da-4051-9cf4-8ed221a8ae4f\nstatus: test\ndescription: Detects DLL sideloading of DLLs that are part of Microsoft Office from non standard location\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\nmodified: 2023-03-15\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    selection:\n        ImageLoaded|endswith: '\\outllib.dll'\n    filter:\n        ImageLoaded|startswith:\n            - 'C:\\Program Files\\Microsoft Office\\OFFICE'\n            - 'C:\\Program Files (x86)\\Microsoft Office\\OFFICE'\n            - 'C:\\Program Files\\Microsoft Office\\Root\\OFFICE'\n            - 'C:\\Program Files (x86)\\Microsoft Office\\Root\\OFFICE'\n    condition: selection and not filter\nfalsepositives:\n    - Unlikely\nlevel: high\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/829a3bdf-34da-4051-9cf4-8ed221a8ae4f.json","kind":"sigma"}