So this is basically an update to my post here:
I didn't know how the person got my RAT in the first place and how they got onto my computer. Now I know that it wasn't someone that got into my Computer because of the cracked version of the Rat-Program - even though there was a silent monero miner in it - but it was someone that got my file from VirusTotal. It's a site where you can scan files and see which out of like 50 antiviruses detect it. I didn't know that they distribute the files and that you can straightly DOWNLOAD them from the site. So someone was probably running a bot on a Virtual Machine, that downloads all files that get flagged as a rat by the antivirus programs on VirusTotal and download them. I remember that I once saw a video on YouTube where someone was able to get into the machine of someone that tried to RAT him by using the file of that person.
So is there a way that someone used my file to get into my computer? What are they able to do with it?
Thanks for any answers ;)
PS: From now on, if I have to use a online virus scanner, I'm using nodistribute ^^