Approximately 45% of stolen assets have entered coin mixing or cross-chain paths, Coldcard attacker continues to move funds

Odaily News: The attacker behind the Coldcard "Wave 3" exploit continues to move stolen funds. In this phase, the attacker created 293 separate 2-of-2 multisig vaults for each victim's assets. On September 2, the first batch of funds was bridged to Ethereum via THORChain; the latest round of transfers has begun entering the CoinJoin mixing process.

Currently, the Wave 3 attacker is processing the largest holdings in descending order by stolen amount, having already transferred vaults ranked 1 through 11 in sequence. The next 10 vaults yet to be transferred collectively hold 30.81 BTC, while vaults ranked 61 through 293 collectively hold 33.77 BTC.

To date, the attacker has moved approximately 45% of the assets stolen in this exploit, with funds either flowing to Ethereum or entering CoinJoin mixing transactions. This latest transfer activity has also revealed a previously unknown vault: 58 addresses jointly spent funds via a 2-of-2 multisig setup in the same format as Wave 3, with the Wave 3 attacker subsequently routing them to a jump address that funds CoinJoin transactions.

This vault is currently marked with "cause = open," but it is highly likely to belong to Coldcard victims as well, which could bring the total number of vaults involved in Wave 3 to 294 and push the previously disclosed total stolen in the Coldcard exploit to approximately 1,806 BTC. At present, roughly 82% of the stolen BTC remains in addresses initially controlled by the attacker, while approximately 18% has been moved, with fund flows suggesting it may be undergoing laundering.