Adware:W32/Searchcolor

Classification

Spyware

Adware

W32

-

Summary

This program delivers advertising content to the user. It is usually annoying but harmless, unless it is combined with spyware or trackware.

Removal

Automatic action

Based on the settings of your F-Secure security product, it may block the file from running, move it to the quarantine where it cannot spread or cause harm, or ask you to select an action.

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Knowledge Base

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User Guide

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Submit a sample

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Technical Details

This is a generic description for Adware:W32/Searchcolor adware family. There are multiple variants in this family.

This adware may be distributed bundled with other applications. It may also be silently downloaded onto the system when an unsuspecting user browses a malicious website.

Installation

During installation, the adware drops the following:

  • %Program Files%\VSToolbar\VSToolBar.dll

This is the file detected as Adware:W32/Searchcolor.& The file is installed as a Microsoft Internet Explorer (IE) toolbar, known as VSToolbar.

The adware also drops the following files as part of its installation:

  • %User%\Application Data\SearchToolbarCorp\Toolbar Vision\PageHistory.txt
  • %User%\Application Data\SearchToolbarCorp\Toolbar Vision\WebHistory.txt

The adware also creates some registry keys (see above).

Activity

This is what the toolbar looks like:

The dropped DLL will be referenced every time IE is launched.

The adware will run hidden in the background, unknown from the user.

Registry Modifications

Sets these values:

  • HKEY_CURRENT_USER\Software\Search Toolbar Corp
  • HKEY_CLASSES_ROOT\CLSID\{821F87FF-8245-4972-9E28-732E92EC2F51}
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{821F87FF-8245-4972-9E28-732E92EC2F51}&&&
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{821F87FF-8245-4972-9E28-732E92EC2F51}

Removal

This adware also includes an uninstallation functionality, and it is listed as "VSToolbar for Internet Explorer" in the Add/Remove Application menu in Control Panel.& Once uninstalled, it will delete its registries keys. The DLL file however will still remain in the system.

Date Created: 2009-03-25 07:12:05.0

Date Last Modified: 2009-08-11 05:46:33.0