MakeProcCrit

A tool that can make a process into a critical process.

(If such process is later closed, or terminated, it will cause a Blue-Screen-of-Death.)

This is also a POC project for my blog post:

"Native Functions To The Rescue - Part 1"

"How to make a critical process that can crash Windows if it is closed."

It covers the technical details of how to give a running process (or a thread) a critical status, or to remove it.

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Download

You can download the binary file to run the MakeProcCrit tool here.

Operation

Make sure to run the tool as an administrator. It should give you the list of available command line options:

Then, if you want to make a process critical, say, all running Notepads, you would do:

MakeProcCrit.exe 1 notepad

or, you can do it by a PID:

MakeProcCrit.exe 1 1234

If the operation succeeds, and you try to terminate it, say, with a Task Manager, you'd get this warning:

Alternatively, if you close that instance of Notepad, you'd crash the operating system:

Finally, to remove the critical status from the poor Notepad (or from any other process), do:

MakeProcCrit.exe 0 notepad

For more details, please read the blog post.