cscli scenarios install sigmahq/proc_creation_win_hktl_meterpreter_getsystem1type: trigger2name: sigmahq/proc_creation_win_hktl_meterpreter_getsystem3description: |4 Detects the use of getsystem Meterpreter/Cobalt Strike command by detecting a specific service starting5filter: |6 (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && (evt.Parsed.ParentImage endsWith '\\services.exe' && (evt.Parsed.CommandLine contains '/c' && evt.Parsed.CommandLine contains 'echo' && evt.Parsed.CommandLine contains '\\pipe\\' && (evt.Parsed.CommandLine contains 'cmd' || evt.Parsed.CommandLine contains '%COMSPEC%') || evt.Parsed.CommandLine contains 'rundll32' && evt.Parsed.CommandLine contains '.dll,a' && evt.Parsed.CommandLine contains '/p:') && not (evt.Parsed.CommandLine contains 'MpCmdRun'))7blackhole: 2m8#status: test9labels:10 service: windows11 confidence: 112 spoofable: 013 classification:14 - attack.t1134.00115 - attack.t1134.0021617 label: "Potential Meterpreter/CobaltStrike Activity"18 behavior : "windows:audit"19 remediation: false2021scope:22 type: ParentProcessId23 expression: evt.Parsed.ParentProcessId2425