Suspicious Outlook Child Process
A Sigma rule for process creation on Windows, by Michael Haag, Florian Roth (Nextron Systems), Markus Neis, Elastic, FPT.EagleEye Team.
high 1 ATT&CK technique 21 programs it names
What it looks for
detection:
selection:
Image|endswith:
- '\AppVLP.exe'
- '\bash.exe'
- '\cmd.exe'
- '\cscript.exe'
- '\forfiles.exe'
- '\hh.exe'
- '\mftrace.exe'
- '\msbuild.exe'
- '\msdt.exe'
- '\mshta.exe'
- '\msiexec.exe'
- '\powershell.exe'
- '\pwsh.exe'
- '\regsvr32.exe'
- '\schtasks.exe'
- '\scrcons.exe'
- '\scriptrunner.exe'
- '\sh.exe'
- '\svchost.exe'
- '\wmic.exe'
- '\wscript.exe'
ParentImage|endswith: '\OUTLOOK.EXE'
condition: selection
The rule’s detection, its selections and fields in order of name. The whole rule, with its references and false positives, is on SigmaHQ, by Michael Haag, Florian Roth (Nextron Systems), Markus Neis, Elastic, FPT.EagleEye Team, under the Detection Rule License 1.1. CmdID evaluates it on a command line alone: a test on what a command line cannot show, such as the parent process or the user, is not met.
None of the everyday examples and documented commands on CmdID’s program pages trips it. To see whether a command line does, paste it into CmdID.
Programs and files it names
ATT&CK
T1204.002User Execution: Malicious File