So the title says what the problem is/was. I downloaded (yes it was a huge mistake) a crack of a program, which gave me a big load of malware, which I could delete with malwarebytes for the biggest part, but theres still a file thats confusing me. It's called "a046f42f740043fb0c2f828a55297521" and includes a few files, such as a cleaning or video editing tool, but the weirdest one was an executable file which I dont remember the name of, it was also just a combination of random letters and numbers. What it did is that it kept opening itself as a background program, and it made Firefox see every website as dangerous, thus i wasnt able to access them (I was able to close it with task manager, but after some time it re-opened itself). Deleting the folder just led to it coming back (in my programs folder) and the same thing happening again. I let malwarebytes analyse the folder and it deleted all files except service.dat and the executable file. After deleting the .exe the problem stopped happening, but this in general just seems a little confusing to me, so I'd be glad if anyone could help me and explain what exactly this is.