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Virus Profile: JS/Tenia.d

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 6/25/2008
Date Added: 6/25/2008
Origin: N/A
Length: Varies
Type: Trojan
Subtype: Script
DAT Required: 5325
Removal Instructions
   
 
 
   

Description

This is a trojan detection. Unlike viruses, trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include email, malicious or hacked web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.

Indication of Infection

  • Unexpected network connections to unknown websites

Methods of Infection

Browsing of websites containing scripts as previously described.

   

Virus Characteristics

This detection covers scripts in which malicious iFrame(s) is appended to the end of a HTML page, i.e. after the < /HTML > tag.

The recent variant also included Javascript obfuscated malicious iFrames. These iFrames will lead to redirection of the browser window to browser exploits that will download and execute malware on user's computer.

   

All Users:

Please use the following instructions for all supported versions of Windows to remove threats and other potential risks:

1.Disable System Restore .

2.Update to current engine and DAT files for detection and removal.

3.Run a complete system scan.

Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

1. Please go to the Microsoft Recovery Console and restore a clean MBR.

On windows XP:

Insert the Windows XP CD into the CD-ROM drive and restart the computer.
When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
Select the Windows installation that is compromised and provide the administrator password
Issue 'fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.


On Windows Vista and 7:

Insert the Windows CD into the CD-ROM drive and restart the computer.
Click on "Repair Your Computer"
When the System Recovery Options dialog comes up, choose the Command Prompt.
Issue 'bootrec /fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.