Cybercriminals from North Korea’s Lazarus Group are likely responsible for the recent theft of at least $70 million worth of cryptocurrency from an exchange, a U.S. cybersecurity firm reported Friday, the threat group’s fifth major heist in just over three months.

Elliptic attributed last Tuesday’s attack on Hong Kong-based cryptocurrency exchange CoinEx to the prominent syndicate after confirming that the attackers transferred some of the stolen assets using a bridge that Lazarus previously employed.

The researchers found that the attackers first sent some of the cryptocurrency to an address used to launder