reposting for awareness.
Be VERY careful interacting with unverified @merkl_xyz campaigns.
A bad actor is creating triple digit APR incentives on Sonic for depositing USDC into an Euler vault, and drains all deposits. This is how it works:
Because Euler is permissionless, the attacker was able to deploy a 'fake' market using scUSD as collateral and USDC as debt. The market has a 1$ deposit cap for scUSD - fully taken by the bad actor. The scUSD oracle price is set to $1M per token, allowing the attacker to borrow 700,000 USDC against a single scUSD (at 70% LTV). The attacker controls the oracle and can raise the price further to extract more funds if needed.
Next, the attacker created an unverified, fake campaign on Merkl to attract deposits. Any USDC deposited to this market is borrowed, swapped into ETH, and transferred to @RAILGUN_Project.
Current losses: roughly $145,000, and growing.
As the attacker is not actively monitoring the vault for new deposits, it allowed 0xc0f8feab321f8ffe97666768451747d16da8cad5, a victim who previously deposited USDC into this vault, to withdraw USDC before the attacker managed to borrow it.
While we don't think @merkl_xyz or @eulerfinance are at fault here, as they both clearly flag the campaign/market as unverified, @merkl_xyz should likely make depositing into an unverified campaign much more annoying with more pop-up warnings, just to prevent this from happening in the future.
Main operator: 0x8ba913e764c5cc9b22ee63737841059ad9caac5f
Final receiver before railgun: 0xa86399e78fb3d9fb5be053825a016e32d390fc12
The list of victims can be found here:
Campaign (SCAM, don't deposit):
Euler Market (SCAM, don't deposit):
cc @zachxbt

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