Probably try reporting to the authorities. You've probably lost enough money to make hiring a lawyer worth it.
But really mate. I wouldn't want to kick you down as you've already lost money, but with 2.4 BTC why don't you have a hardware wallet? And worse — of all choices, you've decided in using a closed source wallet software.
^^
This
Or at the very least, an encrypted wallet.dat
OP I am sorry for your loss, I hate reading these kind of things but you could have avoided this with better security practises.