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Blizzard alert players over compromised World of Warcraft accounts due to trojan

3 Jan 2014  by   Paul Younger
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Some important news if you’re a World of Warcraft player as a major problem caused by a trojan is affected player’s accounts.

The notice issued by Blizzard instructs players on how to track down a trojan that is infecting machines which steals account information in real time even if you are using an authenticator. Blizzard are requesting that players check their PCs especially if their account has been compromised recently.

The really bad news for anyone who has been hit by this is that Blizzard can not find a solution and suggest reformatting your system. Ouch!

Hello,

We’ve been receiving reports regarding a dangerous Trojan that is being used to compromise player’s accounts even if they are using an authenticator for protection. The Trojan acts in real time to do this by stealing both your account information and the authenticator password at the time you enter them.

If your account has been compromised recently, I’d recommend looking for the Trojan. It can be identified by creating an MSInfo file and then looking in the Startup Program section of that file for either “Disker” or “Disker64″. It will usually appear like this:

Disker rundll32.exe c:usersnameappdatalocaltempw_win.dll,dw Name-PCName Startup
Disker64 rundll32.exe c:usersnameappdatalocaltempw_64.dll,dw Name-PCName Startup

We are currently looking for more information on the Trojan. We have not been able to locate any anti-virus programs that will remove it besides just reformatting your system. If you have been recently compromised and find it on your system please reply with the following pieces of information.

  • Your MSInfo.
  • A list of any addons you recently installed along with where you got them.
  • A list of any programs you recently installed along with where you got them.
  • Any security programs you have run and their results.

No matter what type of authenticator you’ve been using, whether it be the mobile of dongly thing, you could still have been hit. As far as we know this trojan has not affected other Blizzard games.

Update: Blizzard posted a follow-up to explain the source of the problem. Be very wary of relying on any third party apps to manage your game updates because it only takes one fake or infected one to really screw things up on your PC.

To summarize for those of you that haven’t read the green posts:

-The trojan is built into a fake (but working) version of the Curse Client that is downloaded from a fake version of the Curse Website. This site was popping up in searches for “curse client” on major search engines, which is how people were lured into going there.

-At this point, it seems the easiest method to remove the trojan is to delete the fake Curse Client and run scans from an updated Malwarebytes. Should you still have issues, there is a more manual method that Ressie posted earlier in the thread.

-Thanks to Ressie’s efforts, most security programs should be able to identify this threat shortly, if not by the time I type this.

-If you were compromised, follow the instructions here and we’ll do our best to set everything right (as we always do).

-For those of you interested in these MitM style attacks, this is the only confirmed case we’ve seen in several years outside of the “Configuring/HIMYM” trojan in early 2012 that hit a handful of accounts. These sort of outbreaks are annoying, but an Authenticator still protects your account 99% of the time. Stay safe

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