cscli scenarios install sigmahq/proc_creation_win_wuauclt_dll_loading1type: trigger2name: sigmahq/proc_creation_win_wuauclt_dll_loading3description: |4 Detects the use of the Windows Update Client binary (wuauclt.exe) for proxy execution.5filter: |6 (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && ((evt.Parsed.Image endsWith '\\wuauclt.exe' || evt.Parsed.OriginalFileName == 'wuauclt.exe') && evt.Parsed.CommandLine contains 'UpdateDeploymentProvider' && evt.Parsed.CommandLine contains 'RunHandlerComServer' && not (evt.Parsed.CommandLine contains ' /UpdateDeploymentProvider UpdateDeploymentProvider.dll ' || evt.Parsed.CommandLine contains ' wuaueng.dll ' || evt.Parsed.CommandLine contains ':\\Windows\\UUS\\Packages\\Preview\\amd64\\updatedeploy.dll /ClassId' || evt.Parsed.CommandLine contains ':\\Windows\\UUS\\amd64\\UpdateDeploy.dll /ClassId' || evt.Parsed.CommandLine contains ':\\Windows\\WinSxS\\' && evt.Parsed.CommandLine contains '\\UpdateDeploy.dll /ClassId '))7blackhole: 2m8#status: test9labels:10 service: windows11 confidence: 112 spoofable: 013 classification:14 - attack.t12181516 label: "Proxy Execution Via Wuauclt.EXE"17 behavior : "windows:audit"18 remediation: false1920scope:21 type: ParentProcessId22 expression: evt.Parsed.ParentProcessId2324