cscli scenarios install sigmahq/proc_creation_win_rundll32_no_params1type: trigger2name: sigmahq/proc_creation_win_rundll32_no_params3description: |4 Detects suspicious start of rundll32.exe without any parameters as found in CobaltStrike beacon activity5filter: |6 (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && ((evt.Parsed.CommandLine endsWith '\\rundll32.exe' || evt.Parsed.CommandLine endsWith '\\rundll32.exe"' || evt.Parsed.CommandLine endsWith '\\rundll32') && not (evt.Parsed.ParentImage contains '\\AppData\\Local\\' || evt.Parsed.ParentImage contains '\\Microsoft\\Edge\\'))7blackhole: 2m8#status: test9labels:10 service: windows11 confidence: 112 spoofable: 013 classification:14 - attack.t12021516 label: "Rundll32 Execution Without CommandLine Parameters"17 behavior : "windows:audit"18 remediation: false1920scope:21 type: ParentProcessId22 expression: evt.Parsed.ParentProcessId2324