1type: trigger
2name: sigmahq/proc_creation_win_office_arbitrary_cli_download
3description: |
4  Detects potential arbitrary file download using a Microsoft Office application
5filter: |
6  (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && ((evt.Parsed.Image endsWith '\\EXCEL.EXE' || evt.Parsed.Image endsWith '\\POWERPNT.EXE' || evt.Parsed.Image endsWith '\\WINWORD.exe' || evt.Parsed.OriginalFileName in ['Excel.exe', 'POWERPNT.EXE', 'WinWord.exe']) && (evt.Parsed.CommandLine contains 'http://' || evt.Parsed.CommandLine contains 'https://'))
7blackhole: 2m
8#status: test
9labels:
10  service: windows
11  confidence: 1
12  spoofable: 0
13  classification:
14   - attack.t1202
15
16  label: "Potential Arbitrary File Download Using Office Application"
17  behavior : "windows:audit"
18  remediation: false
19
20scope:
21  type: ParentProcessId
22  expression: evt.Parsed.ParentProcessId
23
24