The most malicious use of AI would be using it as a cover for the elites to perpetrate stuff that is way out of the current Overton window, and blame AI for that.
If I write a virus I'll get the various cybercrime units on me. The LLM companies don't get a pass if their software does something malicious. They shouldn't get to hide behind "we don't know what it's doing!" (have you tried looking and monitoring?) or "it's too powerful!" (have you tried turning it off when you realised it was doing something bad?)
That's why something is a crime if you or I were to do it but not a crime when these companies do so.
But never fear, they will constantly tell us how what they're doing is for the sake of democracy or safety or ethics or whatever the doublethink of the day is.