Hiding exe file in the keyboard

Hello.
I am totally green, if we talk about hardware.
Could anybody recommend to me, how I could get into this knowledge?
My main goal is to learn how I could hide the 3-rd party exe file in the keyboard memory or anything.
And then hide it from any program that would expect it to be found there.
My project is very important for me and I could do mistery things with it.
So I would really appreciate your help.
My main career path is genetical engineering, medicine.
I know how to fight off male type baldness, fight with autoimmune diseases, more hard things like it.
But about programming and electronics, well I need to learn a lot.
Although, it’s really interessting for me, so I hope somebody would respond to my silly request.