Sorry for you loss and feeling your pain.
Yes hacking wallet is verymuch possible .
I think your computer have some spyware or some kind of keylogger .
Also there comes a possibly of remote session .
Then hacker just took your private keys and wash out your tokens.
Please
1.Format your laptop.
2.use a very good antivirus like avast.
3.use a very defensive firewall.

I also lost 3000usd few times ago so yeah this is not the end of the world keep trying be safe next time.