Incident Overview
Brahma protocol was exploited due to the smart contract vulnerability. The attacker drained user funds for 89,522 $USD.
Brahma Finance is a crosschain yield and hedge protocol. The project's Zapper contract was exploited via smart contract vulnerability. The attacker used the deployed unverified smart contract to exploit the logic of the Zapper contract to drain $USDC from three users.
The stolen amount of 89,522 $USDC was swapped to $DAI and remains at the attacker's original address at the moment.
Attacker address:
https://etherscan.io/address/0x6fa00a73…4c4213
Malicious transaction:
https://etherscan.io/tx/0xeaef2831…6f29c0
Malicious contract:
https://etherscan.io/address/0x60032a41…895c05#code
Swap transaction:
https://etherscan.io/tx/0x4249331d…4181a0
Incident Report
Protocol Information
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.
What Auditors Should Check
If you're auditing a protocol with similar architecture to Brahma Finance, these are the critical security checks that could have prevented this incident (November 2022).
- Verify all logic paths related to Other 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.
Free TrialSecurity Audit History
- Audit Report 1 Report
Sources & References
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