Rococo

I downloaded this one file from emule and its doing strange shit to my computer i've never seen before.

if I try to do anything to the file, the computer starts freaking out, slowing down, cpu usage goes up to 100% and stays there, basically locks everything up.

I've tried deleting the file, even in safe mode but the computer won't let me it says it's being used by another program.

I ran virus checks on the system with both trendmicro and avg neither report anything.

Everything runs fine until i touch this file. How can I get rid of this fucking thing and what is it about the file causing this shit to happen???