VBS.MemEat - Removal

To remove this Trojan:

1. Restart Windows in Safe mode, and delete all instances of the values:
   
   Wichtig#
   Now#
   ZZciao#
   
   from the registry key
   
   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
   
2. Update the virus definitions, run a full system scan, and delete all files that are detected as VBS.MemEat.

For details on how to do this, read the following instructions.

To restart in Safe mode and remove the values from the registry:

CAUTION: Symantec strongly recommends that you back up the registry before you make any changes to it. Incorrect changes to the registry can result in permanent data loss or corrupted files. Modify only the keys that are specified. Read the document How to make a backup of the Windows registry for instructions.

1. Restart the computer in Safe mode. All Windows 32-bit operating systems except Windows NT can be restarted in Safe mode. For instructions on how to do this, read the following document that applies to your version of Windows:
   • How to start Windows XP in Safe mode.
   • How to start Windows 2000 in Safe mode.
   • How to restart Windows 9x or Windows Me in Safe mode.
2. Click Start, and click Run. The Run dialog box appears.
3. Type regedit and then click OK. The Registry Editor opens.
4. Navigate to the following key:
   
   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
   
5. In the right pane, delete all instances of the values:
   
   Wichtig#
   Now#
   ZZciao#
   
   NOTE: There may be 202 instances of each
   
6. Click Registry, and click Exit.

To scan with Norton AntiVirus and delete the infected files:

1. Restart the computer in normal mode.
2. Obtain the most recent virus definitions. There are two ways to do this:
   • Run LiveUpdate, which is the easiest way to obtain virus definitions. These virus definitions have undergone full quality assurance testing by Symantec Security Response and are posted to the LiveUpdate servers one time each week (usually Wednesdays) unless there is a major virus outbreak. To determine whether definitions for this threat are available by LiveUpdate, look at the Virus Definitions (LiveUpdate) line at the top of this write-up.
   • Download the definitions using the Intelligent Updater. Intelligent Updater virus definitions have undergone full quality assurance testing by Symantec Security Response. They are posted on U.S. business days (Monday through Friday). They must be downloaded from the Symantec Security Response Web site and installed manually. To determine whether definitions for this threat are available by the Intelligent Updater, look at the Virus Definitions (Intelligent Updater) line at the top of this write-up.
     
     Intelligent Updater virus definitions are available here. For detailed instructions on how to download and install the Intelligent Updater virus definitions from the Symantec Security Response Web site, click here.
     
3. Start Norton AntiVirus (NAV), and make sure that NAV is configured to scan all files.
   • NAV Consumer products: Read the document How to configure Norton AntiVirus to scan all files.
   • NAV Enterprise products: Read the document How to verify a Symantec Corporate antivirus product is set to scan All Files.
4. Run a full system scan.
5. Delete all files that NAV detects as VBS.MemEat.

Technical Details