How much was lost in the UFCT hack?

The UFCT hack resulted in $1.3M in losses on November 19, 2021.

What attack technique was used in the UFCT exploit?

The UFCT exploit utilized Rugpull. Understanding this attack vector is critical for smart contract auditors and developers building secure DeFi protocols.

How can developers prevent similar smart contract attacks?

Preventing smart contract hacks requires a combination of secure coding practices, thorough security audits, and understanding common attack vectors like reentrancy, oracle manipulation, and access control flaws. Smart Contract Hacking (SCH) provides hands-on training to help developers and auditors identify and prevent vulnerabilities before deployment.

UFCT Hack

TOTAL LOST $1.3M

Medium Nov 19, 2021 Rugpull

Affected Chain 2021 Incident surface

Recovered - No recovery reported

All-Time Rank #769 By amount stolen

Protocol Type Exit Scam/Rugpull Target category

Incident Overview

The project was holding a fundraising event:

https://cointool.app/ido/exchange?id=236b257521232075502150272572237071232a2b2a26762321242322272522262222242652552b762b726f2625

Based on the on-chain data, the token contract deployer was a fund recipient from all presale contracts:

https://bscscan.com/address/0x1a242dfe…93095c#internaltx

Stolen funds were transferred on the external wallets at:

https://bscscan.com/tx/0x5d4bb28d…cc4f79

https://bscscan.com/tx/0xbc3022e5…b89fde

https://bscscan.com/tx/0x4334277e…96cdc6

https://bscscan.com/tx/0xd7d50526…acf5dd

https://bscscan.com/tx/0xafd02763…d73dec

https://bscscan.com/tx/0x0815483a…a32918

https://bscscan.com/tx/0xcd69e3fe…3b0148

https://bscscan.com/tx/0x91da9be6…804866

https://bscscan.com/tx/0xe7889a7b…783b7b

https://bscscan.com/tx/0x3dc3e0e4…342e41

https://bscscan.com/tx/0xde56b5ef…7f4321

https://bscscan.com/tx/0x7434916a…47b4e0

https://bscscan.com/tx/0x1c9e84c8…f140f1

https://bscscan.com/tx/0x27059dcb…0755c6

https://bscscan.com/tx/0xfd2ae9c2…69d4db

Incident Report

Protocol / Project UFCT

Date of Incident November 19, 2021

Attack Technique Rugpull

Classification Token

Primary Source View Post-Mortem #1 View Post-Mortem #2

Protocol Information

Protocol Type Exit Scam/Rugpull

Affected Token UFCT

Official Website ufccryptogame.com/

Team Anonymous

Source Code Unverified

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 UFCT'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 UFCT, these are the critical security checks that could have prevented this incident (November 2021).

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

01
Source 1 https://www.youtube.com/watch?v=4FIwapy6A-M&t=93s
02
Source 2 https://cointool.app/ido/exchange?id=236b25752123207550215027257…
03
Web Archive https://web.archive.org/web/20211120023138/http://ufccryptogame.com/

Threat Assessment

Severity Level

MEDIUM

Attack Vector Rugpull
Root Cause Token
Year 2021

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