1type: trigger
2name: sigmahq/proc_creation_win_office_outlook_susp_child_processes
3description: |
4  Detects a suspicious process spawning from an Outlook process.
5filter: |
6  (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && (evt.Parsed.ParentImage endsWith '\\OUTLOOK.EXE' && (evt.Parsed.Image endsWith '\\AppVLP.exe' || evt.Parsed.Image endsWith '\\bash.exe' || evt.Parsed.Image endsWith '\\cmd.exe' || evt.Parsed.Image endsWith '\\cscript.exe' || evt.Parsed.Image endsWith '\\forfiles.exe' || evt.Parsed.Image endsWith '\\hh.exe' || evt.Parsed.Image endsWith '\\mftrace.exe' || evt.Parsed.Image endsWith '\\msbuild.exe' || evt.Parsed.Image endsWith '\\msdt.exe' || evt.Parsed.Image endsWith '\\mshta.exe' || evt.Parsed.Image endsWith '\\msiexec.exe' || evt.Parsed.Image endsWith '\\powershell.exe' || evt.Parsed.Image endsWith '\\pwsh.exe' || evt.Parsed.Image endsWith '\\regsvr32.exe' || evt.Parsed.Image endsWith '\\schtasks.exe' || evt.Parsed.Image endsWith '\\scrcons.exe' || evt.Parsed.Image endsWith '\\scriptrunner.exe' || evt.Parsed.Image endsWith '\\sh.exe' || evt.Parsed.Image endsWith '\\svchost.exe' || evt.Parsed.Image endsWith '\\wmic.exe' || evt.Parsed.Image endsWith '\\wscript.exe'))
7blackhole: 2m
8#status: test
9labels:
10  service: windows
11  confidence: 1
12  spoofable: 0
13  classification:
14   - attack.t1204.002
15
16  label: "Suspicious Outlook Child Process"
17  behavior : "windows:audit"
18  remediation: false
19
20scope:
21  type: ParentProcessId
22  expression: evt.Parsed.ParentProcessId
23
24