Visor Finance

Exploit

Estimated loss

$8.10M

VERDICT —UNRATED

Verdict pending. Auto-ingested incidents are reviewed before a public verdict is rendered.

▰ METHOD

Undisclosed

Root cause

Root-cause analysis not yet published. The incident description below contains all currently available signal — review the attack transaction directly for definitive forensics.

▰ PROOF OF CONCEPT

DEFIHACKLABS

src/test/2021-12/Visor_exp.sol

view forked test on github ↗

Reproducible Foundry test fork from SunWeb3Sec/DeFiHackLabs. Clone the repo, run forge test against the file path above, and replay the exploit against a mainnet fork at the historical block. Use for reproduction only — not for live targets.

Forensic narrative

The Visor team revealed that a malicious smart contract drained the protocol’s staking contract of 8,812,958 VISR tokens. At the time of the exploit, this was valued at around $8.1 million. Reported loss: $8,100,000.

Primary source

https://beincrypto.com/visor-finance-hacked-for-8m-in-latest-defi-exploit/ ↗

Sourced from

chainsec

Technical record