Yes, it is but it is $81.7 million that is now linked to the amount stolen, not $48 million. This is according to what ZachXBT posted on Telegram about it.
https://t.me/investigations/258You do not need to join the Telegram channel before you will see what he posted about the hack.
Why are the supposed authorities not making effort to recover those stolen funds? I guess you should know the answer because in times of war, anything goes, just maybe. I'm still struggling to believe that that address is a burner address because to generate a wallet, a private key is needed as part of the process. Therefore I have the strong feeling that the sender have access to the wallet, unless I'm wrong, which I'm allowed to.