It was obviously infected, owned by Gh0sT. He has backdoored many stuff he has released and scammed people.
It wasn't a surprise to know that RareBot was infected.
I don't know if you are joking or being serious. Deleting the exe won't do anything at all. Chances are the RAT is already pretty well rooted. He/you will need to use HJT and other tools found @ Malwarebytes forum to get rid of it.
Why do I assume Rarebot came with a FUD'ed RAT? Duh, it's the obvious move "Gh0st" would do.
I don't know if you are joking or being serious. Deleting the exe won't do anything at all. Chances are the RAT is already pretty well rooted. He/you will need to use HJT and other tools found @ Malwarebytes forum to get rid of it.
This reminds me of when people tell someone to download and run ComboFix without knowing what it can do to someone's computer who is inexperienced.
You don't need tons of tools to remove a virus. If you knew what you were doing, you'd be able to remove it manually, or just need to do one scan. You shouldn't have gotten infected in the first place, yeah, but still.