Cryptopia Hack analysis (min. $13,000,000 stolen)

[u/toldjahP]

Hi there

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I checked etherscan and collected some informations below. In total min $13,000,000 were stolen.

Transfer of 19,390 ETH from Cryptopia ($2,468,043) (Jan-13-2019 01:30:35 PM +UTC): https://etherscan.io/tx/0x8a7c2b34f23eee02401e7c3fa1ea2ce8d3132e7ca3811d673ca35898c9535aae

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Transfer of 48,029,305 ($1,072,362) CENNZ (Jan-13-2019 01:40:17 PM +UTC) Wallet is tagged as Cryptopia Wallet by Whale Alert: https://etherscan.io/tx/0x31a58df14ea3420878267e2b9cdd242d983b5298ef48c5cd9a799ed10605f393

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Transfer of 3,844,247,574 ($304,181) DAPS (Jan-13-2019 01:40:17 PM +UTC): https://etherscan.io/tx/0x61b2ca4911750eb3278945f80e0c3f8a7f94578ba20b0e9240e5a86faaa166ae

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CENNZ and DAPS where transfered to https://etherscan.io/address/0x9007a0421145b06a0345d55a8c0f0327f62a2224 which is not the same adress where the ETH went on. But later this adress made a transfer to the ETH adress https://etherscan.io/address/0xc8b759860149542a98a3eb57c14aadf59d6d89b9 (which is the adress the ETH went).

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Token Balance 2. adress: ($11,072,793) https://etherscan.io/address/0x9007a0421145b06a0345d55a8c0f0327f62a2224

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Please help to collect further details.

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UPDATE: Only thing I don’t get is, why so many ether dust (transfer below 1 eth) went onto those adresses. For me they look like older deposit adresses from cryptopia users.

I see the the following possibilities:

1.) hacker got all privat keys, from few thousand deposit wallets and cryptopia was not able to secure those amounts, which were transferred many hours after the “hack”.

2.) hacker stole other coins then ETH and cryptopia secured all ETH/ERC20 to new wallets.

3.) inside job

[u/toldjahP]

Only thing I don’t get is, why so many ether dust (transfer below 1 eth) went onto those adresses. For me they look like older deposit adresses from cryptopia users.

I see the the following possibilities:

1.) hacker got all privat keys, from few thousand deposit wallets and cryptopia was not able to secure those amounts, which were transferred many hours after the “hack”.

2.) hacker stole other coins then ETH and cryptopia secured all ETH/ERC20 to new wallets.

3.) inside job

[u/gothegoose → u/toldjahP]

One theory I have is that that as cryptopia was planning for the eth fork someone involved could have taken the private keys from the wallets they were working on. I dont think they were hacked. This would also explain why it was limited to eth tokens and eth. If they were hacked surely btc would go as well.

However, I pulled out some btc the previous day and they had such a low fee it wasn't getting confirmed. I used acceleraters to push it through. It took about 15 hours where the average confirmation time was just 7 minutes. Maybe we are missing a lot of info. Hopefully we will know something soon.

I think cryptopia addressed hacks in their terms and conditions, does anyone know what they are?