According to the protocol, their developers "were able to identify and recover funds as the attacker was attempting to withdraw the funds". They have also announced that Exchequer, the project's treasury committee, would "reinject" the remaining stolen funds.
- "Bitcoin Defi Protocol Sovryn Gets Hacked for Over $1 Million", CryptoPotato
- "Interim Exploit Update", Sovryn
The attack caused the project's ANA token to plunge in value by 80%, and the project's NIRV stablecoin to lose its dollar peg, falling to $0.08. Nirvana Finance tweeted, "Please be advised: ANA has lost its collateral, and NIRV has lost its peg. Until the thief restores funds, these tokens will not have exchange value. Be very careful with trading NIRV & ANA, as they currently have no guaranteed value."
They also tweeted at the hacker, promising to stop investigating the hacker's identity and to pay a $300,000 "bounty" in exchange for the funds back. They wrote, "You have not taken money from VCs or large funds — the treasury you have taken represents the collective hopes of everyday people."
The project had promised its users over 60% APY, and its Twitter account described ANA as "the balanced risk investment with adaptive yield".
Hackers used NFTs from the popular Doodles collection as collateral to borrow wETH, then withdrew all but one of the NFTs, allowing them to perform a re-entrancy attack. The attacker then laundered the funds using the Tornado Cash cryptocurrency tumbler.
According to Omni, only funds belonging to the platform that were being used for testing were taken by the attacker.
- "Hacker drains $1.4 million worth of ETH from NFT lender Omni", The Block
- Exploiter wallet on Etherscan
Hacker steals over $1.2 million from Inverse Finance, their second such exploit in under three months
Inverse Finance is a borrowing and lending protocol that was hit with a different oracle manipulation attack in early April, which resulted in a $15.6 million loss.
Prior to these attacks, FEG had earned some notoriety from a May 2021 Vanity Fair article outlining an alleged pump-and-dump scheme, titled "Inside the Rise and Fall (and Rise and Fall) of Shit Coins". Despite the bad press, much of the FEG community maintained that the article was a smear and nothing more than an attempt by the author to create FUD. "You could literally take every token and this would apply to everyone..." wrote a moderator of the official FEG subreddit.
Deus had suffered a similar attack in March, with an attacker using a flash loan attack to steal more than $3.1 million. Deus reimbursed users who were liquidated in the incident.
According to Deus' CEO, the exploit in this incident was not the same one used in the previous attack. He wrote on Twitter that the exploit was "the first of its kind, a zero-day exploit on Solidly [decentralized crypto exchange] swaps".