If the hackers were smart enough to take advantage of a vulnerability in their security, I think that they aren't dumb enough to transfer to such a popular CEX without thinking things through. This looks bad for Metawin.
Yeah. They probably tried to cash them out as soon as possible. But they did not think about getting caught using Centralized exchanges. I guess they did not fear getting caught because they would never use their own account to do any transactions. They are probably going to use dummy accounts, which are possible to buy from the internet.
Even they get the funds back, they won't get all the 4 millions dollars. Like kucoin I know for them to refund that money back to Metawin, Kucoin will cut their 40% and if the other centralized exchange will also cut their part then Metawin will lose good amount as well.
Where did you get the information that Kucoin will cut its 40%? Could you please refer to any article or news? If any exchanges are going to charge like this, they are thieves. Why the hell would a company cut 40%? I would donate it to hackers instead of an exchange.