CmdID / Rules / Windows

Operation Wocao Activity

A Sigma rule for process creation on Windows, from SigmaHQ’s emerging threats rules, by Florian Roth (Nextron Systems), frack113.

high 5 ATT&CK techniques 2 programs it names

What it looks for

its detection, as SigmaHQ writes it

detection:
  selection:
    CommandLine|contains:
      - 'checkadmin.exe 127.0.0.1 -all'
      - 'netsh advfirewall firewall add rule name=powershell dir=in'
      - 'cmd /c powershell.exe -ep bypass -file c:\s.ps1'
      - '/tn win32times /f'
      - 'create win32times binPath='
      - '\c$\windows\system32\devmgr.dll'
      - ' -exec bypass -enc JgAg'
      - 'type *keepass\KeePass.config.xml'
      - 'iie.exe iie.txt'
      - 'reg query HKEY_CURRENT_USER\Software\\*\PuTTY\Sessions\'
  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 Florian Roth (Nextron Systems), 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.

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

their pages here

devmgr.dllpowershell.exe

ATT&CK

the techniques it is tagged with

T1012Query Registry

T1027Obfuscated Files or Information

T1036.004Masquerading: Masquerade Task or Service

T1053.005Scheduled Task/Job: Scheduled Task

T1059.001Command and Scripting Interpreter: PowerShell

Operation Wocao Activity

What it looks for

Programs and files it names

ATT&CK

Other rules for T1012 Query Registry