{"id":"84f52741-8834-4a8c-a413-2eb2269aa6c8","title":"DllUnregisterServer Function Call Via Msiexec.EXE","description":"Detects MsiExec loading a DLL and calling its DllUnregisterServer function","author":"frack113","status":"test","level":"medium","date":"2022-04-24","modified":"2024-03-13","tags":["attack.stealth","attack.t1218.007"],"technique_ids":["T1218.007"],"logsource":{"product":"windows","category":"process_creation"},"falsepositives":["Unknown"],"references":["https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218.007/T1218.007.md","https://lolbas-project.github.io/lolbas/Binaries/Msiexec/","https://twitter.com/_st0pp3r_/status/1583914515996897281"],"source_path":"rules/windows/process_creation/proc_creation_win_msiexec_dll.yml","source_sha256":"4385c2b84a214ea845f0f0e0a9a0df8ba32de4db6369683c3dae3c49c3092533","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_msiexec_dll.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: DllUnregisterServer Function Call Via Msiexec.EXE\nid: 84f52741-8834-4a8c-a413-2eb2269aa6c8\nstatus: test\ndescription: Detects MsiExec loading a DLL and calling its DllUnregisterServer function\nreferences:\n    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218.007/T1218.007.md\n    - https://lolbas-project.github.io/lolbas/Binaries/Msiexec/\n    - https://twitter.com/_st0pp3r_/status/1583914515996897281\nauthor: frack113\ndate: 2022-04-24\nmodified: 2024-03-13\ntags:\n    - attack.stealth\n    - attack.t1218.007\nlogsource:\n    product: windows\n    category: process_creation\ndetection:\n    selection_img:\n        - Image|endswith: '\\msiexec.exe'\n        - OriginalFileName: '\\msiexec.exe'\n    selection_flag:\n        CommandLine|contains|windash: ' -z '\n    selection_dll:\n        CommandLine|contains: '.dll'\n    condition: all of selection_*\nfalsepositives:\n    - Unknown\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1218.007","id":"T1218.007","name":"Msiexec","page":"techniques/enterprise/T1218.007/"}],"data_path":"data/detection-rules/84f52741-8834-4a8c-a413-2eb2269aa6c8.json","kind":"sigma"}