Is it possible to catch a dll injection into an application?

Question

C++ / C#

Tell me how on the plus side you can catch injections into the application.

I have an exe,
this exe uses its own dll.

I have a dll source code, I need to write a code into this dll so that when injected into an exe, a certain function works, tell me is it real? if so, where to dig? how to implement

Answer 1

Learn the methods of injection and hang your hooks on the appropriate system calls.
Look here for an example: https://habr.com/ru/company/icl_services/blog/324718/
https://docs.microsoft.com/ru-ru/windows/win32/api...
https://docs .microsoft.com/en-us/windows/win32/api...