cscli scenarios install sigmahq/proc_creation_win_sc_sdset_allow_service_changes1type: trigger2name: sigmahq/proc_creation_win_sc_sdset_allow_service_changes3description: |4 Detects suspicious DACL modifications to allow access to a service from a suspicious trustee. This can be used to override access restrictions set by previous ACLs.5filter: |6 (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && ((evt.Parsed.Image endsWith '\\sc.exe' || evt.Parsed.OriginalFileName == 'sc.exe') && evt.Parsed.CommandLine contains 'sdset' && evt.Parsed.CommandLine contains 'A;' && (evt.Parsed.CommandLine contains ';IU' || evt.Parsed.CommandLine contains ';SU' || evt.Parsed.CommandLine contains ';BA' || evt.Parsed.CommandLine contains ';SY' || evt.Parsed.CommandLine contains ';WD'))7blackhole: 2m8#status: test9labels:10 service: windows11 confidence: 112 spoofable: 013 classification:14 - attack.t1543.0031516 label: "Allow Service Access Using Security Descriptor Tampering Via Sc.EXE"17 behavior : "windows:audit"18 remediation: false1920scope:21 type: ParentProcessId22 expression: evt.Parsed.ParentProcessId2324