URGENT! A 2nd Hack into our Blockchain wallet

[Thirdspace]

Thanks guys for letting us know hackers can use the 12 word seed to move funds without any notification in your web wallet.

weren't there a pop-up warning about it when you save backup phrase for the first time

So just to clarify, you could have all the "protection" you want, such as 2FA, email verification etc. - but if someone has your Blockchain 12 word seed - he can easily move the funds without having to go through all these security steps, correct?!

yes. the same also applies to all standard bitcoin HD wallets
but some other wallets may implement extra Passphrase to protect its BIP39 Mnemonic (word seed)

So basically these security steps are "Good for nothing" pretty much?!

those protections only guard you against any attempts on breaking into your account
once your account breached and backup phrase copied, your bitcoin wallet is compromised
if your bitcoin wallet is compromised, those protections are no longer effective

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[bob123]

Maybe the add-on accessed the browser , like Trojan or something like that.

The whole purpose of a browser extension is to access the browser. Makes sense, doesn't it ?

This is probably the case here, if they still continue to get hacked even the ad-on is removed on the browser as they said previously on the first thread. AFAIK an ad-on dont have a virus-like function that can still access the device if its removed.

It doesn't need to have a 'virus like funtion'. (Also, please not that a virus is just malware which needs interaction from a user).
Once the seed is compromised (meaning: anyone knows the secret which allows to spend the BTC) it will stay compromised forever.



OP, if you have gotten enough ideas, consider closing this thread.
A lot of people have started posting in here without knowing what they are talking about.

[buwaytress]

Have you considered the possibility of an inside job? In other words: how much do you trust your admin?

This is probably the case here, if they still continue to get hacked even the ad-on is removed on the browser as they said previously on the first thread. AFAIK an ad-on dont have a virus-like function that can still access the device if its removed.

There's your vulnerability point, and I think Occam's razor fits well here. The easiest way for this "hack" to have happened is that someone who already has access (seed, password, 2fa etc.) logged in and withdrew the funds.

If they did so, then they could also have been careless. Check access times on the 2fa device, and see if it coincides with the time of the hack, or even ask blockchain.com to see if 2fa alerts were sent. If alerts were sent and login times match, then you likely have the culprit. Maybe he/she even used a known address to withdraw to?

[Get-Paid.com]

OP, if you have gotten enough ideas, consider closing this thread.
A lot of people have started posting in here without knowing what they are talking about.

Yes, you're right in one way.

One last idea we haven't asked about.

The hacker is the owner of Crypton-Exchange.net (as explained in the 1st thread), can we get to him by contacting the domain registrar of this domain? How feasible is that?

[bitmover]

One last idea we haven't asked about.

The hacker is the owner of Crypton-Exchange.net (as explained in the 1st thread), can we get to him by contacting the domain registrar of this domain? How feasible is that?

If you have proofs that this person is a criminal and stole your money, you can try to contact authorities . Registrar would be a good way to identify him

However, if he is the attacker (through the addon), it's probably that he also uses some sort of identity protection. It may not be easy to identify him.

[jackg]

One last idea we haven't asked about.

The hacker is the owner of Crypton-Exchange.net (as explained in the 1st thread), can we get to him by contacting the domain registrar of this domain? How feasible is that?

If you have proofs that this person is a criminal and stole your money, you can try to contact authorities . Registrar would be a good way to identify him

However, if he is the attacker (through the addon), it's probably that he also uses some sort of identity protection. It may not be easy to identify him.

It might a,os be easy to find an innocent bystander who’s had their identity atolen too...
You might also have to check their and your jurisdication. Sometimes they like you to sue people in their country of residence...

[Get-Paid.com]

It might a,os be easy to find an innocent bystander who’s had their identity atolen too...
You might also have to check their and your jurisdication. Sometimes they like you to sue people in their country of residence...

The owner of Crypton-Exchange.net was the one who "guided" our admin what to do, he told him to install the addon (and yes, it was naively done, a rookie's mistake), but legally speaking the chats are documented, when we confronted him for the theft he left the chat (he did speak to us initially), it's all documented - it was done from his site, using his site, it wasn't a Skype conversation where you can say it was a hacker hiding behind someone.

All the activity was made from the site, looking at the site ownership it seems to be registered with Reg.ru - we have some contacts who speak perfect Russian and are lawyers too, we will check the possibility of obtaining his details and getting him arrested in Russia, we have all the evidence we need.

[Lauda]

So just to clarify, you could have all the "protection" you want, such as 2FA, email verification etc. - but if someone has your Blockchain 12 word seed - he can easily move the funds without having to go through all these security steps, correct?!

All of that creates a false sense of security for newbies. Stop using online wallets and start learning how to secure your systems.

It might a,os be easy to find an innocent bystander who’s had their identity atolen too...
You might also have to check their and your jurisdication. Sometimes they like you to sue people in their country of residence...

The owner of Crypton-Exchange.net was the one who "guided" our admin what to do, he told him to install the addon (and yes, it was naively done, a rookie's mistake), but legally speaking the chats are documented, when we confronted him for the theft he left the chat (he did speak to us initially), it's all documented - it was done from his site, using his site, it wasn't a Skype conversation where you can say it was a hacker hiding behind someone.

Which addon was that exactly?

[Get-Paid.com]

This is the official reply from Blockchain.com

Hello,

I'm very sorry to hear about this. You may have some type of malware on your computer that resulted in your funds being stolen because your private information was somehow obtained. One of the most common types of these are browser extensions posing as bitcoin price tickers that are actually stealing your account information. There's also the possibility that you visited a phishing site posing as Blockchain. We've also heard of computer viruses that detect when an address is in your clipboard, and replace the one you wanted to use with an address controlled by this malicious party.

By design, Blockchain never has access to users' accounts or funds. If you keep your password and private key backups secure, then your funds are always safe with us. Since this information has been compromised, be sure to never use this wallet or any addresses contained within it. I'd also highly advise against using the same password again. I'm truly sorry that you had funds stolen from you. That certainly is an extremely frustrating experience.

If you’d like to learn more about how our wallet works, please visit: https://www.blockchain.com/learning-portal/wallet-faq.

Brian | Blockchain Support
Facebook: https://www.facebook.com/blockchain Twitter: https://twitter.com/Blockchain
Blog: https://blog.blockchain.com/

[bob123]

Which addon was that exactly?

From OP's first thread:

The addon was:
https://chrome.google.com/webstore/detail/cr-cash-plugin/joofmeiidadomccpmeaoagdogmbifhlh/related
From CryptoDraw.org

This is the official reply from Blockchain.com

Hello,

I'm very sorry to hear about this. You may have some type of malware on your computer that resulted in your funds being stolen because your private information was somehow obtained. One of the most common types of these are browser extensions posing as bitcoin price tickers that are actually stealing your account information. There's also the possibility that you visited a phishing site posing as Blockchain. We've also heard of computer viruses that detect when an address is in your clipboard, and replace the one you wanted to use with an address controlled by this malicious party.

By design, Blockchain never has access to users' accounts or funds. If you keep your password and private key backups secure, then your funds are always safe with us. Since this information has been compromised, be sure to never use this wallet or any addresses contained within it. I'd also highly advise against using the same password again. I'm truly sorry that you had funds stolen from you. That certainly is an extremely frustrating experience.

If you’d like to learn more about how our wallet works, please visit: https://www.blockchain.com/learning-portal/wallet-faq.

Brian | Blockchain Support
Facebook: https://www.facebook.com/blockchain Twitter: https://twitter.com/Blockchain
Blog: https://blog.blockchain.com/

I didn't expect anything else from their site.

All of that creates a false sense of security for newbies. Stop using online wallets and start learning how to secure your systems.

This.

Follow this advice.

In fact, noone which handles user funds or relies on funds to pay others should use a web wallet. Never.

[keychainX]

So Blockchain sends no notification if you import the wallet using the 12 word seed? Is that what happened here?

It is impossible for blockchain.com to know whether the seed as been imported into another wallet.

But let me understand this:
You have used the SAME wallet with the SAME seed on the SAME 3rd party service which is way less secure than a normal wallet AFTER the attacker gained access to your account?

Really.. ?


A really good advice from me: Please stop any business around crypto.
First learn the basics (yes, BASICS), then start dealing with money.

We are experts at advertising and paying users, yes, when it comes to Crypto we have to learn a very hard lesson here.
Who in his right mind would use a compromised account to store more funds?

Yes, it's a terrible mistake, people do make mistakes, this one is indeed quite a costly one, it's no fun for sure, but we would have to storm it out and move on.

Thanks guys for letting us know hackers can use the 12 word seed to move funds without any notification in your web wallet.

So just to clarify, you could have all the "protection" you want, such as 2FA, email verification etc. - but if someone has your Blockchain 12 word seed - he can easily move the funds without having to go through all these security steps, correct?!

So basically these security steps are "Good for nothing" pretty much?!

You should consider changing your e-mail address with blockchain.com , if they got your login credentials and password they could request the mail address to be moved, then they can drain your wallet.

Just make a new account, and change all your mail accounts and passwords.

Consider doing a clean install of your computer as well, just in case you have some code laying around.

You should also consider to check if you have a physical keylogger connected to your keyboard. Simple, is there any usb box between your keyboard cable and the computer (if you dont use a laptop)

/KX

[Get-Paid.com]

We have posted a conversation with the hacker, so this thread is now closed and locked and you can continue reading here:

https://bitcointalk.org/index.php?topic=5083139.0