Adware:W32/GigaSearch

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.

Find out more

Knowledge Base

Find the latest advice in our Community Knowledge Base.

User Guide

See the user guide for your product on the Help Center.

Contact Support

Chat with or call an expert for help.

Submit a sample

Submit a file or URL for further analysis.

Technical Details

GigaSearch is an adware program that also includes functionality to perform browser hijacking.

It is able to modify the web browser's settings to hijack the browser's main pages and install toolbars, browser plug-ins and& browser helper objects (BHO).

Installation

Upon execution, it adds a list of URLs to the Favorites folder and Desktop. Some of which may contain adult contents:

  • %favorites%\Computers and Privacy
  • %favorites%\Real Estate
  • %favorites%\Finance
  • %favorites%\Sport
  • %favorites%\Travel
  • %favorites%\Pharmacy
  • %favorites%\Gambling
  • %favorites%\Dating
  • %favorites%\Shopping

Activity

When the adware is executed, it performs the following actions:

  • Changes the Internet Explorer startpage togigasearch.biz
  • Hijacks the home page and search page
  • Displays pop-up advertisements
  • Installs unwanted advertisement shorcuts
  • Installsthe Giga Search toolbar

Registry

During installation, the program modifies the following registry subkeys to change Internet Explorer's default settings:

  • [HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main] "Start Page"="http://gigasearch.bin/206"
  • [HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main] "Search Page"="http://gigasearch.bin/206"
  • [HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Toolbar\ShellBrowser] "ITBarLayout"=
  • [HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser] "ITBarLayout"=

It also adds various registry subkeys (see above).

Registry Modifications

Creates these keys:

  • [HKEY_CLASSES_ROOT\CLSID\{C1EA1782-8E6E-4EA4-9800-B68DE41F1A26}]
  • [HKEY_CLASSES_ROOT\Interface\{1F080480-802D-468F-AF65-D031EDCBFD4A}]
  • [HKEY_CLASSES_ROOT\TypeLib\{79837A1F-9D73-4242-A3C1-9F2312EB8EF2}]
  • [HKEY_CLASSES_ROOT\GigaBar.ToolBandObj]
  • [HKEY_LOCAL_MACHINE\Software\Classes\GigaBar.ToolBandObj]
  • [HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\Toolbar] "{C1EA1782-8E6E-4EA4-9800-B68DE41F1A26}"="Giga Search"
  • [HKEY_LOCAL_MACHINE\Software\Classes\CLSID\{C1EA1782-8E6E-4EA4-9800-B68DE41F1A26}]
  • [HKEY_LOCAL_MACHINE\Software\Classes\Interface\{1F080480-802D-468F-AF65-D031EDCBFD4A}]
  • [HKEY_LOCAL_MACHINE\Software\Classes\TypeLib\{79837A1F-9D73-4242-A3C1-9F2312EB8EF2}]
  • [HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\MenuExt\ GigaBar Serach]
  • [HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\{C1EA1782-8E6E-4EA4-9800-B68DE41F1A26}]

Date Created: 2009-03-25 04:44:19.0

Date Last Modified: 2009-03-26 03:30:13.0