Here's a tip, make sure you are using a very strong rpc password. I held around 4,500 vtc, then yesterday someone cracked my rpc password, and stole 3,000 vtc. Monitoring the blockchain I have noticed this has happened to multiple wallets. So don't let this happen to you too!
Why did you have your RPC port open to the world? And how do you know you were hacked via RPC? Wouldn't a wallet-stealing trojan be far more likely? And why didn't they steal all your VTC instead of just 3000?