{"id":"49be8799-7b4d-4fda-ad23-cafbefdebbc5","title":"Use of Wfc.exe","description":"The Workflow Command-line Compiler can be used for AWL bypass and is listed in Microsoft's recommended block rules.","author":"Christopher Peacock @SecurePeacock, SCYTHE @scythe_io","status":"test","level":"medium","date":"2022-06-01","modified":"","tags":["attack.execution","attack.stealth","attack.t1127"],"technique_ids":["T1127"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Legitimate use by a software developer"],"references":["https://lolbas-project.github.io/lolbas/OtherMSBinaries/Wfc/","https://learn.microsoft.com/en-us/windows/security/application-security/application-control/windows-defender-application-control/design/applications-that-can-bypass-wdac"],"source_path":"rules/windows/process_creation/proc_creation_win_lolbin_wfc.yml","source_sha256":"450b6579a58c0ebe77b4abf9f723ac66e81cab327940e99dd288eb5d4132dc7e","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_lolbin_wfc.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Use of Wfc.exe\nid: 49be8799-7b4d-4fda-ad23-cafbefdebbc5\nstatus: test\ndescription: The Workflow Command-line Compiler can be used for AWL bypass and is listed in Microsoft's recommended block rules.\nreferences:\n    - https://lolbas-project.github.io/lolbas/OtherMSBinaries/Wfc/\n    - https://learn.microsoft.com/en-us/windows/security/application-security/application-control/windows-defender-application-control/design/applications-that-can-bypass-wdac\nauthor: 'Christopher Peacock @SecurePeacock, SCYTHE @scythe_io'\ndate: 2022-06-01\ntags:\n    - attack.execution\n    - attack.stealth\n    - attack.t1127\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection:\n        - Image|endswith: '\\wfc.exe'\n        - OriginalFileName: 'wfc.exe'\n    condition: selection\nfalsepositives:\n    - Legitimate use by a software developer\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1127","id":"T1127","name":"Trusted Developer Utilities Proxy Execution","page":"techniques/enterprise/T1127/"}],"data_path":"data/detection-rules/49be8799-7b4d-4fda-ad23-cafbefdebbc5.json","kind":"sigma"}