{"id":"79a87aa6-e4bd-42fc-a5bb-5e6fbdcd62f5","title":"Msiexec Quiet Installation","description":"Adversaries may abuse msiexec.exe to proxy execution of malicious payloads.\nMsiexec.exe is the command-line utility for the Windows Installer and is thus commonly associated with executing installation packages (.msi)\n","author":"frack113","status":"test","level":"medium","date":"2022-01-16","modified":"2024-12-01","tags":["attack.stealth","attack.t1218.007"],"technique_ids":["T1218.007"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["WindowsApps installing updates via the quiet flag"],"references":["https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/msiexec","https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218.007/T1218.007.md","https://twitter.com/_st0pp3r_/status/1583914244344799235"],"source_path":"rules/windows/process_creation/proc_creation_win_msiexec_install_quiet.yml","source_sha256":"2191d4192ed755275ec5af81a441bf7ab91fccf1eddcd8d5dbe3276054b5040b","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_msiexec_install_quiet.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Msiexec Quiet Installation\nid: 79a87aa6-e4bd-42fc-a5bb-5e6fbdcd62f5\nstatus: test\ndescription: |\n    Adversaries may abuse msiexec.exe to proxy execution of malicious payloads.\n    Msiexec.exe is the command-line utility for the Windows Installer and is thus commonly associated with executing installation packages (.msi)\nreferences:\n    - https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/msiexec\n    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218.007/T1218.007.md\n    - https://twitter.com/_st0pp3r_/status/1583914244344799235\nauthor: frack113\ndate: 2022-01-16\nmodified: 2024-12-01\ntags:\n    - attack.stealth\n    - attack.t1218.007\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_img:\n        - Image|endswith: '\\msiexec.exe'\n        - OriginalFileName: 'msiexec.exe'\n    selection_cli:\n        # Note that there is no space before and after the arguments because it's possible to write a commandline as such\n        # Example: msiexec -q/i [MSI Package]\n        CommandLine|contains|windash:\n            - '-i'\n            - '-package'\n            - '-a'\n            - '-j'\n    selection_quiet:\n        CommandLine|contains|windash: '-q'\n    filter_user_temp:\n        # The %temp% is a very common location for installers\n        ParentImage|startswith: 'C:\\Users\\'\n        ParentImage|contains: '\\AppData\\Local\\Temp\\'\n    filter_system_temp:\n        ParentImage|startswith: 'C:\\Windows\\Temp\\'\n    filter_ccm:\n        ParentImage: 'C:\\Windows\\CCM\\Ccm32BitLauncher.exe'\n        IntegrityLevel:\n            - 'System'\n            - 'S-1-16-16384'\n    condition: all of selection_* and not 1 of filter_*\nfalsepositives:\n    - WindowsApps installing updates via the quiet flag\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/79a87aa6-e4bd-42fc-a5bb-5e6fbdcd62f5.json","kind":"sigma"}