BNQ Hack

TOTAL LOST $72K
Low Rugpull

Summarize with AI

Affected Chain 2023 Incident surface
Recovered - No recovery reported
All-Time Rank #1626 By amount stolen
Protocol Type Exit Scam/Rugpull Target category

Incident Overview

On the 26th of March BNQ on the BSC chain was rugged for ~$72K USD.

- The BNQ deployer previously was funded by the tornado.cash, so we can claim it was a rug pull.

- The contract owner initiated a function safePull() call to receive a significant amount of BNQ

- The scammer received 190,000,000 BNQ and swapped the largest part for $72,652USDT.

Tornado cash funding:

https://bscscan.com/tx/0x7094b0a3…b1710c

Transfer:

https://bscscan.com/tx/0x97824224…624b28

Example of swap:

https://bscscan.com/tx/0x11914bba…b957dd

safePull calls:

https://bscscan.com/token/0x5c530131…13fc96?a=0x49fe5c4d…a11896

Incident Report

Protocol / Project BNQ
Date of Incident
Attack Technique Rugpull
Classification Token

Protocol Information

Protocol Type Exit Scam/Rugpull
Affected Token BNQ
Official Website benqi.fi/
Protocol Twitter/X @BenqiFinance
Team Anonymous
Source Code Unverified

Market Context at Time of Hack

Token Categories
DeFi Binance Launchpool Avalanche Ecosystem Lending & Borrowing Arrington XRP Capital Portfolio Spartan Group Liquid Staking Derivatives Binance Ecosystem

What the Attacker Needed to Succeed

Understanding the prerequisites for this type of attack helps auditors identify protocols that are most at risk and helps developers build better defenses.

Technical Knowledge Deep understanding of rugpull and Solidity and EVM internals
Capital Required Seed capital to cover gas and initial position setup
On-Chain Access Ability to interact with smart contracts and deploy a custom exploit contract
Protocol Analysis Identification of the exploitable vulnerability in BNQ's contract logic - root cause: token
Execution Speed Precise transaction ordering and timing to exploit the vulnerability within a single atomic block
Obfuscation Plan A strategy to launder and move stolen funds - typically through mixers, cross-chain bridges, or decentralized DEX swaps to resist tracing

What Auditors Should Check

Could this have been caught in audit? Hard to catch — private key / OpSec failures are outside smart contract audit scope

If you're auditing a protocol with similar architecture to BNQ, these are the critical security checks that could have prevented this incident (March 2023).

  • Verify all logic paths related to Rugpull are guarded by proper access controls and input validation
  • Review privileged functions (owner, admin, governance) for potential abuse vectors - centralization risks should be documented and bounded with timelocks or multi-sigs

Master these auditing techniques with hands-on labs and real exploit scenarios in the Smart Contract Hacking course.

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Sources & References

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