Process Hollowing in Windows 10

[Aldhard Oswine]

I'm trying to implement process hollowing in Win10 for x64 processes.
Which is almost same as in this code: https://github.com/m0n0ph1/Process-Hollowing/blob/master/sourcecode/ProcessHollowing/ProcessHollowing.cpp, but for x64.

and for an entry point, I'm using "Rcx" register.

It works for apps if target and victim process is same, otherwise, it causes the error: "the application was unable to start correctly 0xc00000142".
It also works apps, which are created by me for the test.

What are possible mistakes in my implementation?

Edited May 24, 2017 by Aldhard Oswine

[Aldhard Oswine]

Solved: problem was different subsystem