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@BladeTiger12
I'm writing in C# so it's not that simple cause I can't use asm in there.
I'd have to wrap this code up into a dll in C++ or delphi and then use imported function.
For now I'm fine with calling WinApi functions, but thanks for showing other methods.
Maybe some day I use them :)

You have to inject this dll in process.(To use it like that)
Otherwise you can use CreateRemoteThread in C#.
But then you have to write the bytes in process, and call it with CreateRemote...

(You can also do something like communication between injected DLL and C# program -> TCP, File...)