Mysterious Attacker Returns $5.4 Million to DeFi Protocol Euler Finance
According to ZachXBT, the individual who exploited Euler Finance returned 3,000 ether (ETH) worth about $5.4 million to the DeFi lending protocol on Saturday.
They were trolling with that transaction to Lazarus
— ZachXBT (@zachxbt) March 18, 2023
Euler Finance got hacked earlier this week and $197 million were stolen.
The protocol offered the attacker a 10% bounty ($19.7 million) on Tuesday in exchange for returning the remaining 90% of the stolen funds. If the funds were not returned within 24 hours, Euler Finance would have launched a $1 million reward for information that would lead to the attacker’s arrest and the return of all funds.
The $197 million loss resulted from a flash-loan attack, where DeFi users borrow large amounts of funds against zero collateral and must repay the loans before the transaction ends.
The attacker took $136 million of staked ether (stETH), $34 million of USDC, $19 million of wrapped bitcoin (WBTC), and $8.7 million of DAI from the protocol. The attacker then transferred 1,100 ETH ($1.8 million) to Tornado Cash, a cryptocurrency mixer, to launder the stolen funds.
READ MORE: Crypto Market Booms Despite Banking Crisis: Bitcoin Leads the Way
On Friday, the Euler attacker sent 100 ETH (around $170,500) to a wallet associated with the Ronin network hack, which is linked to the North Korean hacking group Lazarus Group.
It is unclear whether the attacker will return the remaining stolen funds. ZachXBT suggested that the attacker may be trolling, as they previously sent a transaction to Lazarus.
The U.S. Department of the Treasury added Lazarus Group to its list of designated entities in April last year.