The wallets contained 52.19666422 BTC--at current exchange rates, that adds up to just over $145,000. NSA has reportedly pointed the finger at North Korea, at least in private.
http://www.tomshardware.co.uk/wannacry-ransomware-empty-bitcoin-wallets,news-56388.html
http://www.tomshardware.co.uk/wannacry-ransomware-empty-bitcoin-wallets,news-56388.html