1type: trigger
2name: sigmahq/proc_creation_win_schtasks_folder_combos
3description: |
4  Detects scheduled task creations that have suspicious action command and folder combinations
5filter: |
6  (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && ((evt.Parsed.Image endsWith '\\schtasks.exe' || evt.Parsed.OriginalFileName == 'schtasks.exe') && evt.Parsed.CommandLine contains ' /create ' && (evt.Parsed.CommandLine contains 'powershell' || evt.Parsed.CommandLine contains 'pwsh' || evt.Parsed.CommandLine contains 'cmd /c ' || evt.Parsed.CommandLine contains 'cmd /k ' || evt.Parsed.CommandLine contains 'cmd /r ' || evt.Parsed.CommandLine contains 'cmd.exe /c ' || evt.Parsed.CommandLine contains 'cmd.exe /k ' || evt.Parsed.CommandLine contains 'cmd.exe /r ') && (evt.Parsed.CommandLine contains 'C:\\ProgramData\\' || evt.Parsed.CommandLine contains '%ProgramData%'))
7blackhole: 2m
8#status: test
9labels:
10  service: windows
11  confidence: 1
12  spoofable: 0
13  classification:
14   - attack.t1053.005
15
16  label: "Schtasks From Suspicious Folders"
17  behavior : "windows:audit"
18  remediation: false
19
20scope:
21  type: ParentProcessId
22  expression: evt.Parsed.ParentProcessId
23
24