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Virus Profile: VBS/Ztin

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 3/11/2003
Date Added: 6/23/2003
Origin: Unknown
Length: 4,333 Bytes
Type: Virus
Subtype: VbScript
DAT Required: 4184
Removal Instructions
   
 
 
   

Description

This is a virus detection. Viruses are programs that self-replicate recursively, meaning that infected systems spread the virus to other systems, which then propagate the virus further. While many viruses contain a destructive payload, it's quite common for viruses to do nothing more than spread from one system to another.

Indication of Infection

The presence of the above files and messages. Also the system will ping to various websites.

Methods of Infection

This worm spreads through the KaZaa, and file-sharing applications.
   

Virus Characteristics

This threat is detected as VBS/Notice.gen. On executing the infected VBScript file, the virus will copy itself as MS Script Tool.vbs in the hard coded directory c:\windows. The virus will then copy itself to the following directories if they exist:

  • C:\Program Files\Kazaa\Kazaa_Search_Engine.vbs
  • C:\Program Files\KMD\My Shared Folder\Hot_Sluts.jpg.vbs
  • C:\Program Files\KMD\My Shared Folder\WinXp Key Gen.exe.vbs
  • C:\Program Files\KMD\My Shared Folder\Ozzy - Crazy Train.mp3.vbs
  • C:\Program Files\Kazaa\My Shared Folder\Hot_Sluts2.jpg.vbs
  • C:\Program Files\Kazaa\My Shared Folder\Norton's Serial Gen.exe.vbs
  • C:\Program Files\Kazaa\My Shared Folder\
    Good Charlotte - underGRADS Theme.mp3.vbs
  • C:\Program Files\KaZaA Lite\My Shared Folder\Hot_Sluts3.jpg.vbs
  • C:\Program Files\KaZaA Lite\My Shared Folder\
    Pc-Cillin2003 Crack.exe.vbs
  • C:\Program Files\KaZaA Lite\My Shared Folder\
    GreenDay - Paradise.mp3.vbs
  • C:\Program Files\Grokster\My Grokster\sexy_legs_redhead.jpg.vbs
  • C:\Program Files\Grokster\My Grokster\TrojanCleaner.exe.vbs
  • C:\Program Files\Grokster\My Grokster\Shakira - Whenever.mp3.vbs
  • C:\Program Files\BearShare\Shared\osama.jpg.vbs
  • C:\Program Files\BearShare\Shared\F-Secure Crack.exe.vbs
  • C:\Program Files\BearShare\Shared\
    Southpark - Eric Holy Nite.mp3.vbs
  • C:\Program Files\Edonkey2000\Incoming\terrorist.jpg.vbs
  • C:\Program Files\Edonkey2000\Incoming\Kazaa.exe.vbs
  • C:\Program Files\Edonkey2000\Incoming\
    Nelly - Hot In Here Remixed.mp3.vbs

The virus will then overwrite all jpg, jpeg, mp3 and mp2 found in above directories. It will also add .vbs extension to them. The following registry key will be added if Kazaa is installed: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
KazaaP2P, C:\Program Files\Kazaa\Kazaa_Search_Engine.vbs

On the 17/2, the virus will display the following message and perform a denial of service to various websites:

On the 01/3, the virus will display the following message and perform a denial of service to various websites:

On the 05/3, the virus will display the following message and perform a denial of service to various websites:

On the 01/4, the virus will display the following message and perform a denial of service to various websites:

On the 01/6, the virus will display the following message and perform a denial of service to various websites:

   
Use current engine and DAT files for detection and removal.

Using File Filtering with WebShield SMTP for WindowsNT(not applicable for Solaris):
Within the Configuration console select content filtering.
Select Add.
Add a Description for the content filter rule such as VBSBlock.
Select Filter on Attachment File name.
Filter on .vbs
Select OK.

Additional Windows ME/XP removal considerations

AVERT Recommended Updates:

* Office2000 Updates

* scriptlet.typelib/Eyedog vulnerability patch

* Outlook as an email attachment security update

* Exchange 5.5 post SP3 Information Store Patch 5.5.2652.42 - this patch corrects detection issues with GroupShield

For a list of attachments blocked by the Outlook patch and a general FAQ, visit this link.
Additionally, Network Administrators can configure this update using an available tool - visit this link for more information.