Stake suffered a $41M loss due to a private key compromise.
Zunami got exploited due to price manipulation.
EarningFarm lost $530K due to reentrancy vulnerability.
Steadefi’s protocol deployer wallet was compromised.
Hacks
Hacks Analysis
Stake | Amount Lost: $41M
On September 6, the Stake exploit on multiple chains resulted in a $41M loss. The root cause was the compromise of private keys. The attackers were able to gain access to Stake’s hot wallets. The attackers then called the transfer() function to drain 9,620 ETH on the Ethereum Mainnet, 14.24 million MATIC on the Polygon Network, and 82,650 BNB on the BNB Chain. The FBI identified North Korea's Lazarus Group as the hacker behind this exploit.
On August 1st, the Zunami Protocol exploit on the Ethereum Mainnet resulted in a $2.2 million loss due to a price manipulation vulnerability. Zunami Protocol's contract determines account balances by multiplying the current balance with the assetPriceCached() value and this value is directly proportional to the totalHoldings amount. The attacker was able to increase the total holdings by flash loaning 7M USDT from UniSwapV3, 7M USDC, and 10,011 WETH from Balancer and swapping these funds for 4.8M UZD tokens on Curve.
On August 9, the EarningFarm exploit on the Ethereum Mainnet resulted in a $530K loss due to a reentrancy attack. The attacker initially borrowed 80,000 ETH using flash loans and deposited it into the ENF_ETHLEV contract. The attacker then exploited the vulnerable withdraw() function, which allowed them to transfer ENF_ETHLEV tokens to themselves in the fallback function before the withdrawal was executed. This allowed the attacker to redeem 320 ETH and make a profit of 292 ETH.
On August 7, the Steadefi exploit on Arbitrum resulted in a $1.1 loss. The Steadefi team has confirmed that their protocol deployer wallet was compromised. The attacker first transferred ownership of the Arbitrum and Avalanche vaults and approved themselves as a borrower. The attacker then maximized the lending capacity on the Arbitrum and Avalanche chains and drained the assets. Following the exploit, Steadefi's total value locked (TVL) dropped by 66% to $669K.
Exploit Contract (on Arbitrum): 0x79B94854e50704f4A121D72bFE6Aaf41BB92F8c0
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Follow-up: Conduct a follow-up review to ensure that the remediation steps were effective and that the smart contract is now secure.
Follow-up: Conduct a follow-up review to ensure that the remediation steps were effective and that the smart contract is now secure.
In Brief
Remitano suffered a $2.7M loss due to a private key compromise.
GAMBL’s recommendation system was exploited.
DAppSocial lost $530K due to a logic vulnerability.
Rocketswap’s private keys were inadvertently deployed on the server.
Hacks
Hacks Analysis
Huobi | Amount Lost: $8M
On September 24th, the Huobi Global exploit on the Ethereum Mainnet resulted in a $8 million loss due to the compromise of private keys. The attacker executed the attack in a single transaction by sending 4,999 ETH to a malicious contract. The attacker then created a second malicious contract and transferred 1,001 ETH to this new contract. Huobi has since confirmed that they have identified the attacker and has extended an offer of a 5% white hat bounty reward if the funds are returned to the exchange.
