cscli scenarios install sigmahq/proc_creation_win_schtasks_one_time_only_midnight_task1type: trigger2name: sigmahq/proc_creation_win_schtasks_one_time_only_midnight_task3description: |4 Detects scheduled task creation events that include suspicious actions, and is run once at 00:005filter: |6 (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && ((evt.Parsed.Image contains '\\schtasks.exe' || evt.Parsed.OriginalFileName == 'schtasks.exe') && (evt.Parsed.CommandLine contains 'wscript' || evt.Parsed.CommandLine contains 'vbscript' || evt.Parsed.CommandLine contains 'cscript' || evt.Parsed.CommandLine contains 'wmic ' || evt.Parsed.CommandLine contains 'wmic.exe' || evt.Parsed.CommandLine contains 'regsvr32.exe' || evt.Parsed.CommandLine contains 'powershell' || evt.Parsed.CommandLine contains '\\AppData\\') && evt.Parsed.CommandLine contains 'once' && evt.Parsed.CommandLine contains '00:00')7blackhole: 2m8#status: test9labels:10 service: windows11 confidence: 112 spoofable: 013 classification:14 - attack.t1053.0051516 label: "Uncommon One Time Only Scheduled Task At 00:00"17 behavior : "windows:audit"18 remediation: false1920scope:21 type: ParentProcessId22 expression: evt.Parsed.ParentProcessId2324