JS.Seeker.J - Removal

Risk Level 1: Very Low

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Discovered: January 10, 2003
Updated: February 13, 2007 11:55:59 AM
Type: Trojan Horse
Systems Affected: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP


These instructions are for all current and recent Symantec antivirus products, including the Symantec AntiVirus and Norton AntiVirus product lines.
  1. Update the virus definitions.
  2. Run a full system scan and delete all the files detected as JS.Seeker.J.
  3. Clear the recently visited history cache and delete the Temporary Internet Files in Internet Explorer.
  4. Delete or modify the values from the registry.

    • Delete the following values:

      (Default)
      Start Page


      from the registry key:

      HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

    • Delete the value:

      NoRun

      from the registry key:

      HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer

    • Delete the value:

      DisableRegistryTools

      from the registry key:

      HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System

    • Delete the following values:

      HomePage
      SecChangeSettings


      from the registry key:

      HKEY_CURRENT_USER\SOFTWARE\Policies\Microsoft\Internet Explorer\Control Panel

    • Modify the following values:

      RegisteredOrganization
      RegisteredOwner


      to your own information from the registry key:

      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion

    • Modify the following values:

      Start Page
      First Home Page
      Default_Page_URL
      Local Page
      Search Page


      to where you want to point, from the registry key:

      HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\Main

    • Delete the link files created by JS.Seeker.J in the following folders:

      <user's favorites folder>
      C:\Windows\Application Data\Microsoft\Internet Explorer\Quick Launch
      C:\Windows\Start Menu
      C:\Windows\Desktop
      C:\Windows\Start Menu\Programs

      NOTE: The names of the link files are in Chinese.
For specific details on each of these procedures, read the following instructions.

1. Updating the virus definitions
Symantec Security Response fully tests all the virus definitions for quality assurance before they are posted to our servers. There are two ways to obtain the most recent virus definitions:
  • Running LiveUpdate, which is the easiest way to obtain the 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), in the "Protection" section, at the top of this writeup.
  • 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), in the "Protection" section, at the top of this writeup.

    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.

2. Scanning for and deleting the infected files
  1. Start your Symantec antivirus program and make sure that it is configured to scan all the files.
  2. Run a full system scan.
  3. If any files are detected as infected with JS.Seeker.J, click Delete.

3. Clearing the History and Temporary Internet Files folders in Internet Explorer
  1. Open Internet Explorer.
  2. Click the Tools menu, and then click "Internet Options."
  3. Click the "Clear History" button.
  4. Click the "Delete Files" button.

4. Removing or modifying 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 the specified keys only. Read the document, "How to make a backup of the Windows registry," for instructions.
  1. Click Start, and then click Run. (The Run dialog box appears.)
  2. Type regedit, and then click OK. (The Registry Editor opens.)
  3. Navigate to, delete, or modify the following keys:

    • Navigate to the following key:

      HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    • In the right pane, delete the values:

      (Default)
      Start Page

    • Navigate to the key:

      HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer
    • In the right pane, delete the value:

      NoRun
    • Navigate to the key:

      HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
    • In the right pane, delete the value:

      DisableRegistryTools
    • Navigate to the key:

      HKEY_CURRENT_USER\SOFTWARE\Policies\Microsoft\Internet Explorer\Control Panel
    • In the right pane, delete the values:

      HomePage
      SecChangeSettings

    • Navigate to the key:

      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
    • In the right pane, modify the following values:

      RegisteredOrganization
      RegisteredOwner


      to your own information.
    • Navigate to the key:

      HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\Main
    • In the right pane, modify the following values:

      Start Page
      First Home Page
      Default_Page_URL
      Local Page
      Search Page


      to where you want to point.
    • Exit the Registry Editor.


Writeup By: Robert X Wang
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