VBS.DDV

VBS.DDV is written in Microsoft Visual Basic (VB) Script and attempts to spread using Microsoft Outlook. There have been no reports of this worm in the wild.

Type:	Zoo Worm
Systems Affected:	Windows 95, Windows 98, Windows NT, Windows 2000, Windows XP, Windows Me
Systems Not Affected:	Windows 3.x, Microsoft IIS, Macintosh, OS/2, UNIX, Linux

Virus Definitions (LiveUpdate™ Weekly) March 26, 2003 Virus Definitions (Intelligent Updater) March 21, 2003

When VBS.DDV is run, it does the following:

1. Creates the file, Win32system.vbs or Winsystem32.vbs.
   
2. Adds the file to the Windows StartUp folder, so that the script runs when you start Windows.
   
3. Creates the value:
   
   Win32system Win32system.vbs or winsystem32.vbs
   
   in the registry key:
   
   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
   
4. Creates the registry key:
   
   HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Winlogo
   
   with the values:
   
   LegalNoticeCaption ÄãÖÐÁË°¢±ù²¡¶¾,  wwww17432@163.com
   
   LegalNoticeText ÄãÖÐÁË°¢±ù²¡¶¾
   
   NOTE: Some of the characters are in Chinese and are not properly displayed on an English language system. If your computer has the Chinese character set enabled, it will look like this:
   
   
   
5. May attempt to send itself to all the addresses in the Microsoft Outlook Address Book. The email, which is also in Chinese, is:
   
   Subject: ½ñÍíÄãÀ´Âð£¿
   Message: ÅóÓÑÄãºÃ£ºÄúµÄÅóÓÑRose¸øÄú·¢À´ÁËÈÈÇéµÄÑûÇë¡£¾ßÌåÇé¿öÇëÔĶÁËæП½¼þ£¬×£ÄúºÃÔË£¡ ͬ³ÇÔ¼»áÍø
   Attachment: Win32system.vbs or Winsystem32.vbs
   
   If your computer has the Chinese character set enabled, it will look like this:
   
   

1. Update the virus definitions.
2. Run a full system scan and delete all the files detected as VBS.DDV.
3. Delete the value that was added to the registry.
   

• Running LiveUpdate, which is the easiest way to obtain virus definitions: These virus definitions are posted to the LiveUpdate servers once each week (usually on Wednesdays), unless there is a major virus outbreak. To determine whether definitions for this threat are available by LiveUpdate, refer to the Virus Definitions (LiveUpdate).
• Downloading the definitions using the Intelligent Updater: The Intelligent Updater virus definitions are posted on U.S. business days (Monday through Friday). You should download the definitions from the Symantec Security Response Web site and manually install them. To determine whether definitions for this threat are available by the Intelligent Updater, refer to the Virus Definitions (Intelligent Updater).
  
  The 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.

1. Start your Symantec antivirus program and make sure that it is configured to scan all the files.
   • For Norton AntiVirus consumer products: Read the document, "How to configure Norton AntiVirus to scan all files."
   • For Symantec AntiVirus Enterprise products: Read the document, "How to verify that a Symantec Corporate antivirus product is set to scan All Files."
2. Run a full system scan.
3. If any files are detected as infected with VBS.DDV, click Delete.

1. Click Start, and then click Run. (The Run dialog box appears.)
2. Type regedit
   
   Then click OK. (The Registry Editor opens.)
   
3. Navigate to the key:
   
   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
   
4. In the right pane, delete the value:
   
   Win32system
   
5. Exit the Registry Editor.

Write-up by: Maryl Magee