1type: trigger
2name: sigmahq/proc_creation_win_msdt_arbitrary_command_execution
3description: |
4  Detects processes leveraging the "ms-msdt" handler or the "msdt.exe" binary to execute arbitrary commands as seen in the follina (CVE-2022-30190) vulnerability
5filter: |
6  (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && ((evt.Parsed.Image endsWith '\\msdt.exe' || evt.Parsed.OriginalFileName == 'msdt.exe') && (evt.Parsed.CommandLine contains 'IT_BrowseForFile=' || evt.Parsed.CommandLine contains ' PCWDiagnostic' && (evt.Parsed.CommandLine contains ' -af ' || evt.Parsed.CommandLine contains ' /af ' || evt.Parsed.CommandLine contains ' –af ' || evt.Parsed.CommandLine contains ' —af ' || evt.Parsed.CommandLine contains ' ―af ')))
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 Command Execution Using Msdt.EXE"
17  behavior : "windows:audit"
18  remediation: false
19
20scope:
21  type: ParentProcessId
22  expression: evt.Parsed.ParentProcessId
23
24