This is what they all have to do. If they were hacked, they should take full responsibility of it, they should handle it just like Binance when a trouble came to them. Sure it's a big money but it's all their customers fund and they should return it no matter what the situation is. But hey, I've checked the wallet too and it's now containing the original amount.

Funds returned and coming in from 'Upbit Hacker 1'.