The U.S. Treasury Department on Friday blacklisted three cryptocurrency wallets linked to a record-shattering crypto heist last month, the latest effort to thwart North Korea from using cryptocurrencies to fund its nuclear and ballistic missile programs.

The wallets are linked to the Lazarus Group, the North Korean syndicate behind the attack on a blockchain-based video game, Axie Infinity, which the Federal Bureau of Investigation (FBI)  said earned the hackers $620 million. 

An NK Pro review of blockchain records from Etherscan, an Ethereum blockchain explorer, found that the newly-designated wallets have received over $140 million worth of