NullMeridianLog

16 Oct 2024, from ~15:46 UTC

Radiant Capital: Compromised Devices Signed Malicious Safe Ownership Transfer

Radiant: on 16 Oct 2024 malware on at least three developers' devices collected Safe{Wallet} signatures that transferred LendingPool ownership. ~$50M drained from Arbitrum and BSC.

  • Event date
  • Incident typeProtocol admin compromise
  • Bug classSocial engineering
  • Published

Loss, as sourced

Approximately $50 million USD from core markets on Arbitrum and BSC, per Radiant. Attackers also used open approvals against users.

Traceability

Primary sources

  1. 01medium.comRadiant Capital Post-Mortem, 18 Oct 2024 (opens in a new tab)

In brief

Root cause: Per Radiant: malware on at least three hardware-wallet signers made Safe show legitimate emissions/cap updates while malicious transferOwnership payloads were signed. Tenderly and Safe UI reviews showed no anomalies.

Timeline, as sourced: Per Radiant: malicious contracts deployed 2 Oct; 16 Oct 15:46 ARB nonce 230 proposed; 17:09 ownership transferred on Arbitrum; BSC ownership at 17:11; war room from 17:12.

Account, as sourced

Claimed (Radiant) (post-mortem (opens in a new tab)): ~$50M; users told to revoke approvals on Arb, BSC, Ethereum, Base. Admin thresholds were 3-of-N.

Unknown: initial device compromise vector.

Summaries of public sources as of the published date; except where marked (on-chain), not independently verified by NullMeridian. Figures are the sources’ own and are attributed; where sources disagree, each is given. Sources may since have changed. Not legal, financial or investment advice.