>>>snip<<<
Moving to another wallet won't save you if you have got malware in your PC. I think what you should do is wiped off the whole OS and install a fresh one, then just sweep your Bitcoins to a new wallet you create.
If it's a lot of funds then buying a hardware wallet which is a little more secure way of keeping your Bitcoins wouldn't be a bad idea
I switched wallets on a pc to a new clean os, windows 8.1 from 7 at the time.
If this hacker had this level of access my wallet and password would be already compromised!