Encyclopedia entry
Updated:
Jun 03, 2008
| Published:
Jun 03, 2008
Aliases
Not available
Alert Level
(?)
Severe
Antimalware protection details
Microsoft recommends that you download the
latest definitions
to get protected.
Summary
Win32/Zuten is a family of malware that steals information from online games.
Symptoms
System Changes
There are no obvious system changes that may indicate the presence of Win32/Zuten.
Technical Information (Analysis)
Win32/Zuten is a family of malware that steals information from online games.
Installation
When executed, if the targeted game is running, Win32/Zuten terminates the game's process. The main executable then drops a DLL component with a random filename and loads it. The dropper then deletes itself.
When loaded, the DLL component may drop a second DLL, which is used to hide files, and a driver which is used to terminate processes.
Payload
Steals Sensitive Information
The Win32/Zuten family steals information related to online games. It accomplishes this by injecting a DLL into the targeted game process and patching API calls. The collected game information is then posted to a remote website. Some of the games targeted by Win32/Zuten include the following:
MapleStory
ZhengTu
Perfect World
Legend of Mir
Ruler of the Land
Rainbow Island
Eudemons Online
Fantasy Westward Journey
Terminates Processes
Variants of Win32/Zuten usually search for and terminate processes related to security products, including the following (for example):
avp.exe
RavMon.exe
360Tray.exe
360Safe.exe
killer_Gdwli32.exe
QQDoctor.exe
Uses Advanced Stealth
Variants of Win32/Zuten may drop a DLL component that is used to hide files associated with the trojan. This DLL may be detected as VirTool:WinNT/Zuten.
Analysis by Ray Roberts
Prevention
Take the following steps to help prevent infection on your system:
-
Enable a firewall on your computer.
-
Get the latest computer updates.
-
Use up-to-date antivirus software.
-
Use caution with attachments and file transfers.
Enable a firewall on your computer
Use a third-party firewall product or turn on the Microsoft Windows XP Internet Connection Firewall.
To turn on the Internet Connection Firewall in Windows XP
-
Click Start, and click Control Panel.
-
Click Network and Internet Connections. If you do not see Network and Internet Connections, click Switch to Category View.
-
Click Change Windows Firewall Settings.
-
Select On.
-
Click OK.
To turn on the Windows Firewall in Windows Vista
-
Click Start, and click Control Panel.
-
Click Security.
-
Click Turn Windows Firewall on or off.
-
Select On.
-
Click OK.
Get the latest computer updates
Updates help protect your computer from viruses, worms, and other threats as they are discovered. You can use the Automatic Updates feature in Windows XP to automatically download future Microsoft security updates while your computer is on and connected to the Internet.
To turn on Automatic Updates in Windows XP
-
Click Start, and click Control Panel.
-
Click System.
-
Click Automatic Updates.
-
Select a setting. Microsoft recommends selecting Automatic. If you do not choose Automatic, but you choose to be notified when updates are ready, a notification balloon appears when new downloads are available to install. Click the notification balloon to review and install the updates.
Use up-to-date antivirus software
Most antivirus software can detect and prevent infection by known malicious software. To help protect you from infection, you should always run antivirus software that is updated with the latest signature files. Antivirus software is available from several sources. For more information,
see http://www.microsoft.com/protect/computer/viruses/vista.mspx.
Use caution with attachments and file transfers
Exercise caution with e-mail and attachments received from unknown sources, or received unexpectedly from known sources. Use extreme caution when accepting file transfers from known or unknown sources.
Recovery
