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ID:

monox-179

Date:

Status:

Incident Count:

November 30, 2021

Verified

1

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REKT

Contributor:

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zerofriction.io

KYC By:

KYC:

None

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Audit By:

Audits:

Halborn, Peckshield

Loss Amount:

31,000,000

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Recovered:

-

Rewards:

Currency:

USD,WETH, MATIC, WBTC, LINK, GHST, DUCK, MIM and IMX

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Key Indicators

Platform:

Type:

Category:

Method:

Data Sources:

Ethereum, Polygon

Protocol

Dexes

Contract Vulnerabilities

Extended Method:

Logic error

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Days in Operation:

0

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The automatic market maker protocol MonoX was hacked. In this attack, approximately US$18.2 million worth of WETH and 10.5 million US USD of MATIC were stolen. Other stolen tokens included WBTC, LINK, GHST, DUCK, MIM and IMX. The total loss was approximately 31 million U.S. USD. The hacker exploited the MonoX protocol because the same token is used for the tokenIn and tokenOut functions. Since they were able to use the same tokens in the swapTokenFORExactToken function, the updated tokenOut will supersede the tokenIn’s price update. This led MONO token price to increase and be used to purchase most of the assets in the protocol.

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