Crypto tracking platform MistTrack has followed funds taken in the Harmony bridge hack, publishing a list of 350 addresses associated with the attack. North Korea’s state-sponsored Lazarus Group is thought to be behind the hack. According to a Twitter thread posted on Jan. 23, the funds were transferred through various exchanges in an effort to elude trackers.
Funds in a number of tokens worth about $100 million were stolen from the Harmony bridge on June 23, then quickly swapped for Bitcoin (BTC), according to MistTrack, and returned to the wallet they had originally been transferred to. The bridge facilitates transfer between Harmony and the Ethereum network, Binance Chain and Bitcoin. Harmony offered $1 million for the return of the funds, but the offer was not accepted.
Rather, the hackers, who were later identified as the North Korean Lazarus Group, ran 85,700 Ether (ETH) through the Tornado Cash mixer and deposited them at several addresses, where they remained until Jan. 13, when they were transferred to a Railgun, a privacy system on Ethereum that provides anonymization. From there, they were transferred to the addresses identified.
Other funds were transferred to the Avalanche (AVAX) blockchain, where they were exchanged for Tether (USDT) or Tron’s USDD token, and eventually deposited into addresses on the Ethereum and Tron networks.
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Some progress has been made on recovering the stolen funds. Binance CEO Changpeng Zhao (CZ) announced via Twitter on Jan. 15 that 121 BTC had been recovered from the Huobi exchange after Binance detected their presence there.
Harmony proposed minting new native ONE tokens to reimburse some of the 65,000 wallets that had suffered losses from the hack, but that idea proved unpopular and instead it announced a plan in September to reimburse the losses out of its treasury. In November, Harmony said it was adding seven coins from the compromised bridge that were unaffected by the hack to its new LayerZero bridge, thus making it possible for holders of the coins to move them off the network.
Additional reporting by Tom Blackstone.