Suspicious Execution of Shutdown to Log Out

A Sigma rule for process creation on Windows, by frack113.

medium 1 ATT&CK technique 2 programs it names 1 everyday example trips it

What it looks for

its detection, as SigmaHQ writes it

detection:
  selection:
    CommandLine|contains: '/l'
    Image|endswith: '\shutdown.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 frack113, 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.

Command lines that trip it

everyday examples from tldr-pages, CC BY 4.0, each read by CmdID

Log off the current machine on the page for shutdown

shutdown /lIdentify

Programs and files it names

their pages here

shutdownshutdown.exe

ATT&CK

the techniques it is tagged with

T1529System Shutdown/Reboot

Suspicious Execution of Shutdown to Log Out

What it looks for

Command lines that trip it

Programs and files it names

ATT&CK

Other rules for T1529 System Shutdown/Reboot