Harmony hacker sends stolen funds to Tornado Cash mixer

The funds from Concord’s Horizon Bridge have begun to maneuver into the Twister Money Ethererum mixer, signaling that the attacker has no intention of accepting the $1 million bounty provided.

The choice to obfuscate the ill-gotten positive factors solutions questions on whether or not the Concord group’s supply of simply 1% of the $100 million in crypto funds stolen on June 24 could be sufficient to persuade the exploiter to return them.

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#PeckShieldAlert ~6k $ETH (~$7.1m) into @TornadoCash from @harmonyprotocol exploiters
Middleman tackle: 0x432…47ae pic.twitter.com/AR9dmJRQet

— PeckShieldAlert (@PeckShieldAlert) June 27, 2022

A complete of 18,036.3 ETH price about $21 million was moved out of the Horizon Bridge exploiter’s primary pockets at 03:10 am ET on June 28. These funds have been then divided equally 3 ways and despatched to 3 totally different addresses in single transactions respectively, over the subsequent 10 hours.

Twister Money helps mixing a most of 100 ETH at a time, which suggests giant sums can simply take a number of hours to combine. Mixing ETH is a privateness measure designed to obfuscate the transaction path of cash in order that they can’t be traced again to earlier transactions.

The first and second wallets that obtained ETH from the exploiter’s main pockets have accomplished mixing the cash and at the moment are left with about 16.3 ETH collectively, an quantity possible too small to trouble with.

The third pockets was busy sending batches of 100 ETH to Twister in eight-minute intervals and nonetheless had 2,800 cash remaining as of the time of writing.

Cointelegraph has not obtained a reply from the Concord group on what it plans to do to interchange the stolen funds within the bridge.

The venture’s Twitter account reaffirmed on June 27 that the group was working with “two extremely respected blockchain tracing and evaluation companions,” together with the Federal Bureau of Investigation, to analyze the hack.

1/ We’re conscious the hacker has begun to maneuver funds by means of Twister Money. The group is working with two extremely respected blockchain tracing and evaluation companions, and collaborating with the FBI as a part of an investigation into this felony act.

— Concord (@harmonyprotocol) June 28, 2022

About $80 million in ETH continues to be within the explorer’s main pockets. They may probably return a portion of the stolen funds to Horizon, or they could be taking a break because it has taken the exploiter over 13 hours to combine simply $21 million.

Though the preliminary haul was valued at about $100 million on the time, optimistic ETH value fluctuations have elevated the greenback worth to $101.5 million.

Stephen Tse, the founding father of Concord, confirmed on June 25 that the exploiter took management of the required two Horizon Bridge signees for the multisig tackle used to safe funds. He famous that the Ethereum aspect of the bridge affected by the exploit was moved to a safer multisig pockets that required 4 signees.

Associated: Axie Infinity to compensate Ronin exploit victims and relaunch bridge

Horizon is the most recent in a rising listing of token bridges which were attacked. The biggest token bridge to be hacked was Poly Community in 2021, which misplaced $610 million that was nearly totally returned.

In complete, over $1 billion has been extracted from the Meter, Wormhole, Ronin, and now Horizon token bridges by means of nefarious means in 2022 up to now.

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