The crypto stolen from Bybit is now being sent through Bitcoin mixers. Several hundred thousand dollars has already been sent to mixers such as Wasabi Wallet and Cryptomixer.
Cryptomixer is a traditional, centralised mixer - your bitcoin is put in a pot controlled by the mixer operator, and then you (hopefully) take out different bitcoin, with a different source of funds (minus a fee).
Wasabi Wallet is different - technically it's a "privacy wallet", making use of Coinjoin transactions to conceal the transaction trail. A "coordinator" facilitates this process, but doesn't take custody of funds.
This could be a very slow process - these mixers have a limited capacity.