1type: trigger
2name: sigmahq/proc_creation_win_msiexec_masquerading
3description: |
4  Detects the execution of msiexec.exe from an uncommon directory
5filter: |
6  (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && ((evt.Parsed.Image endsWith '\\msiexec.exe' || evt.Parsed.OriginalFileName == '\\msiexec.exe') && not (evt.Parsed.Image startsWith 'C:\\Windows\\System32\\' || evt.Parsed.Image startsWith 'C:\\Windows\\SysWOW64\\' || evt.Parsed.Image startsWith 'C:\\Windows\\WinSxS\\'))
7blackhole: 2m
8#status: test
9labels:
10  service: windows
11  confidence: 1
12  spoofable: 0
13  classification:
14   - attack.t1036.005
15
16  label: "Potential MsiExec Masquerading"
17  behavior : "windows:audit"
18  remediation: false
19
20scope:
21  type: ParentProcessId
22  expression: evt.Parsed.ParentProcessId
23
24