Security warning: trojan stealing coins, swapping C&P addresses

[Nefario]

I'm after being in contact with one of GLBSE's users who's funds have didn't seem to show up. After more investigation we discovered that he has a trojan/malware.

The malware recognises any bitcoin addresses that are copied, and replaces them with a new address, when you copy an address from your service you're using (GLBSE.com, Intersango.com) to your bitcoin client to transfer your coins, the malware replaces them with the scam address, so that your coins are sent to the hacker.

When I have more details on the software involved/responsible I will update, in the meantime make sure to double check the address you copy/paste.

I believe that this is a windows only vulnerability.

Nefairo

[1713930813]

1713930813

[1713930813]

1713930813

[1713930813]

1713930813

[Remember remember the 5th of November]

I'm after being in contact with one of GLBSE's users who's funds have didn't seem to show up. After more investigation we discovered that he has a trojan/malware.

The malware recognises any bitcoin addresses that are copied, and replaces them with a new address, when you copy an address from your service you're using (GLBSE.com, Intersango.com) to your bitcoin client to transfer your coins, the malware replaces them with the scam address, so that your coins are sent to the hacker.

When I have more details on the software involved/responsible I will update, in the meantime make sure to double check the address you copy/paste.

I believe that this is a windows only vulnerability.

Nefairo

Figures, Linux is not nearly exploitable.

[RodeoX]

So am I correct in assuming that a countermeasure could be verifying the address before sending? Or does it make the change in a way that is not visible to the user?

[Kaos]

what's the dodgy bitcoin address? Is it static or does it change every time?!

[Nefario]

any ways what it did is when i copied the btc address from your site in a browser and pasted to my account on btc-e in another browser tab to request withdrawal it would paste a different address i didnt notice it till today it was in a link on bitcointalk.org for an optimized miner so i downloaded the miner and ran it nothing happened so i just ignored it and didnt think anything of it until now

From the user.

It's a new address each time.

I believe that visually verifying the address will protect against this.

The addresses so far:
17PPGjFhmvt75yPAd5yFv9iYyBGQfHevnd
14Yq1jKRqwbb9oExcyZFZ6a92QTk333WEZ

[DeathAndTaxes]

I mean that sucks but on the other hand I got to say awesome to the malware writer.  Get the user to send coins to the wrong address.  No need to keylog, hack the client, look for wallet.dat, spoof RPC, etc.  Just get the user to send you money.

[Stephen Gornick]

When I have more details on the software involved/responsible I will update, in the meantime make sure to double check the address you copy/paste.

I believe that this is a windows only vulnerability.

Possibly related:
 - http://stackoverflow.com/questions/400212/how-to-copy-to-the-clipboard-in-javascript

[MysteryMiner]

Trojan that replaces the filled data for bank transfers was around at least 4 years ago. Adopting such system for Bitcoin is no brainer.

I was looking for exploit to copy address to clipboard using javascript but it did not work with FireFox without user intervention. I abandoned the idea.

[foggyb]

I mean that sucks but on the other hand I got to say awesome to the malware writer.  Get the user to send coins to the wrong address.  No need to keylog, hack the client, look for wallet.dat, spoof RPC, etc.  Just get the user to send you money.

I've been WONDERING when the first hacker would do this. Its so obvious.

[drakahn]

any ways what it did is when i copied the btc address from your site in a browser and pasted to my account on btc-e in another browser tab to request withdrawal it would paste a different address i didnt notice it till today it was in a link on bitcointalk.org for an optimized miner so i downloaded the miner and ran it nothing happened so i just ignored it and didnt think anything of it until now

From the user.

It's a new address each time.

I believe that visually verifying the address will protect against this.

The addresses so far:
17PPGjFhmvt75yPAd5yFv9iYyBGQfHevnd
14Yq1jKRqwbb9oExcyZFZ6a92QTk333WEZ

Any info what the optimised miner was? or a link to the thread?

[Nefario]

No I've not heard back.

[foggyb]

any ways what it did is when i copied the btc address from your site in a browser and pasted to my account on btc-e in another browser tab to request withdrawal it would paste a different address i didnt notice it till today it was in a link on bitcointalk.org for an optimized miner so i downloaded the miner and ran it nothing happened so i just ignored it and didnt think anything of it until now

From the user.

It's a new address each time.

I believe that visually verifying the address will protect against this.

The addresses so far:
17PPGjFhmvt75yPAd5yFv9iYyBGQfHevnd
14Yq1jKRqwbb9oExcyZFZ6a92QTk333WEZ

Is it possible for malicious code to detect a <mousebutton-down> event on a send dialog box, then insert the hackers address a millisecond later? In such a case, visual verification may not thwart the attack.

A 'lock address' function could help. The address locks the moment is it pasted into the field. No unlock (except cancel).

[payb.tc]

A 'lock address' function could help. The address locks the moment is it pasted into the field. No unlock (except cancel).

or just a regular confirmation dialog... Are you sure you want to send 1 million bitcoins to 1ffjfitetwrexjf...? YES / NO

[marked]

Any info what the optimised miner was? or a link to the thread?

neheminer 2.0 is believed to currently be the miner, discussion now on btc-e chat.

marked

[drakahn]

Any info what the optimised miner was? or a link to the thread?

neheminer 2.0 is believed to currently be the miner, discussion now on btc-e chat.

marked

i know... i'm the one discussing, lol

http://xml.ssdsandbox.net/view/91c66258f4294c95a77a6aaa8ef3ec39

it reads your wallet.dat as well, so if you notice this make sure to make a new wallet for your coins

[Nefario]

Any info what the optimised miner was? or a link to the thread?

neheminer 2.0 is believed to currently be the miner, discussion now on btc-e chat.

marked

Thats funny, the affected user was sent to me from btc-e.

[marked]

i know... i'm the one discussing, lol

http://xml.ssdsandbox.net/view/91c66258f4294c95a77a6aaa8ef3ec39

it reads your wallet.dat as well, so if you notice this make sure to make a new wallet for your coins

oops, didn't see far enough back to see you were already there talking about it.

marked

[finway]

Check address.

[CIYAM]

A 'lock address' function could help. The address locks the moment is it pasted into the field. No unlock (except cancel).

or just a regular confirmation dialog... Are you sure you want to send 1 million bitcoins to 1ffjfitetwrexjf...? YES / NO

Unfortunately it's fairly easy to write software to send a Yes/No the instant the confirmation dialog appears (I built a tool for doing this in order to get around some shareware nags years ago).

[dayfall]

Perhaps someone could code vhash into their webpage and into a client.