Threat Explorer

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Spyware.Dotcomtoolbar

Spyware.Dotcomtoolbar

Updated:
13 February 2007
Publisher:
www.dotcomtoolbar.com
Risk Impact:
High
File Names:
Redirect2.exe Redirect7.exe Redirect9a.exe toolbar_nieuw14.dll
Systems Affected:
Windows

Behavior


Spyware.Dotcomtoolbar is a program that hooks URLs, sends them to a predetermined Web site, and then redirects the URL to the correct location. The Web site can log a user's IP address and visited URLs.

Symptoms


The files are detected as Spyware.Dotcomtoolbar.

Behavior


Must be installed on the computer by executing a file or visiting a Web site.

Antivirus Protection Dates

  • Initial Rapid Release version 02 October 2014 revision 022
  • Latest Rapid Release version 07 May 2019 revision 006
  • Initial Daily Certified version 16 October 2003
  • Latest Daily Certified version 07 May 2019 revision 008
  • Initial Weekly Certified release date 22 October 2003
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

When Spyware.Dotcomtoolbar runs, it does following:
  1. Adds the value:

    "redirect" = "[path to adware file]"

    on the registry subkey:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

  2. Opens a browser window displaying the Web page www.dotcomtoolbar.com/install.asp

  3. Adds some of the following registry subkeys:

    HKEY_CLASSES_ROOT\CLSID\{29DD1EA6-1FDA-44A4-B083-C9900547BC48}
    HKEY_CLASSES_ROOT\CLSID\{5F1ABCDB-A875-46c1-8345-B72A4567E486}
    HKEY_CLASSES_ROOT\CLSID\{FC2493D6-A673-49FE-A2EE-EFE03E95C27C}
    HKEY_CLASSES_ROOT\Interface\{7B9A715E-9D87-4C21-BF9E-F914F2FA953F}
    HKEY_CLASSES_ROOT\Interface\{7C479D09-1280-41D2-945F-2377736B8CF7}
    HKEY_CLASSES_ROOT\Interface\{EAF2CCEE-21A1-4203-9F36-4929FD104D43}
    HKEY_CLASSES_ROOT\TypeLib\{6D3F5DE4-E980-4407-A10F-9AC771ABAAE6}
    HKEY_CLASSES_ROOT\GoRSDN.ContextItem
    HKEY_CLASSES_ROOT\GoRSDN.ContextItem.1
    HKEY_CLASSES_ROOT\Pugi.PugiObj
    HKEY_CLASSES_ROOT\Pugi.PugiObj.1
    HKEY_CLASSES_ROOT\ToolBand.hits
    HKEY_CLASSES_ROOT\ToolBand.hits.1
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Code Store Database
    \Distribution Units\{5F1ABCDB-A875-46C1-8345-B72A4567E483}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
    \Uninstall\DotComToolbar
    HKEY_ALL_USERS\Software\DotComToolbar
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
    \ModuleUsage\C:/WINDOWS/Downloaded Program Files/toolbar_nieuw14.dll
    HKEY_ALL_USERS\Software\Microsoft\Internet Explorer\MenuExt\&RSDN Search

  4. Adds the value:

    "SearchAssistant" = "Explorer"

    to the registry subkey:

    HKEY_ALL_USERS\Software\Microsoft\Internet Explorer\Search

  5. Adds the values:

    "Search Bar" = "[Web site on the searchbar.findthewebsiteyouneed.com domain]"
    "Default_Search_URL" = "[Web site on the searchbar.findthewebsiteyouneed.com domain]"

    to the registry subkey:

    HKEY_ALL_USERS\Software\Microsoft\Internet Explorer\Main

  6. Adds the values:

    "Start Page" = "[Web site on the findthewebsiteyouneed.com domain]"
    "Search Page" = "[Web site on the searchbar.findthewebsiteyouneed.com domain]"

    to the registry subkey:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main

  7. Adds the value:

    "SearchAssistant" = "[Web site on the searchbar.findthewebsiteyouneed.com domain]"

    to the registry subkey:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Search

  8. Creates the following registry subkeys:

    HKEY_ALL_USERS\Software\Microsoft\Internet Explorer\Toolbar
    \WebBrowser\{5F1ABCDB-A875-46C1-8345-B72A4567E486}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer
    \Toolbar\{5F1ABCDB-A875-46C1-8345-B72A4567E486}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DownloadManager

  9. Adds the value:

    "SharedDlls" = "C:\WINDOWS\Downloaded Program Files
    \toolbar_nieuw14.dll"

    to the registrysubkey:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion

  10. Logs the IP address and URLs visited on the compromised computer.

    It does this by hooking any URL visited and changing it to the following:

    www.dotcomtoolbar.com/redirect/url.asp?url=[URL the user would like to visit]



Removal using the Spyware.Dotcomtoolbar Removal Tool
Symantec Security Response has developed a removal tool for Spyware.Dotcomtoolbar. Use this removal tool first, as it is the easiest way to remove this threat.

The tool can be found here: http://securityresponse.symantec.com/avcenter/FxDtcmtb.exe

The current version of the tool is 1.0.1 and will have a digital signature timestamp equivalent to 04/01/2005 11:28 AM PST

Note: The date and time displayed will be adjusted to your time zone, if your computer is not set to the Pacific time zone.

It has been reported that a computer on which Spyware.Dotcomtoolbar is installed may also have other security risks. Symantec recommends that the following steps be carried out:
  1. Apply the Spyware.Dotcomtoolbar Removal Tool.
  2. Update the definitions by starting the Symantec program and running LiveUpdate.
  3. Run a full system scan to detect any other security risks on the computer.
  4. If the scan detects any further security risks, check for removal tools at http://securityresponse.symantec.com/avcenter/security.risks.tools.list.html.
  5. If there are no removal tools for the security risks that are detected, follow the manual removal instructions listed in the threat report.

Manual Removal
  1. Update the virus definitions.
  2. Run a full system scan and delete all the files detected as Spyware.Dotcomtoolbar.
  3. Delete the value that was added to the registry.
  4. Reset the Internet Explorer start page.
  5. Reset the Internet Explorer search page.
For specific details on each of these steps, 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 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).
  • 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).

    The Intelligent Updater virus definitions are available: Read "How to update virus definition files using the Intelligent Updater" for detailed instructions.

2. Scanning for and deleting the infected files
  1. Start Norton AntiVirus and make sure that it is configured to scan all the files. For more information, read the document: How to configure Norton AntiVirus to scan all files.
  2. Run a full system scan.
  3. If any files are detected as infected with Spyware.Dotcomtoolbar, click Delete.
3. Deleting the value from the registry

WARNING: Symantec strongly recommends that you back up the registry before making 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

    Then click OK. (The Registry Editor opens.)

  3. Navigate to the key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

    In the right pane, delete the value

    "redirect" = "[path to adware file]"

  4. Navigate to and delete the following keys:

    HKEY_CLASSES_ROOT\CLSID\{29DD1EA6-1FDA-44A4-B083-C9900547BC48}
    HKEY_CLASSES_ROOT\CLSID\{5F1ABCDB-A875-46c1-8345-B72A4567E486}
    HKEY_CLASSES_ROOT\CLSID\{FC2493D6-A673-49FE-A2EE-EFE03E95C27C}
    HKEY_CLASSES_ROOT\Interface\{7B9A715E-9D87-4C21-BF9E-F914F2FA953F}
    HKEY_CLASSES_ROOT\Interface\{7C479D09-1280-41D2-945F-2377736B8CF7}
    HKEY_CLASSES_ROOT\Interface\{EAF2CCEE-21A1-4203-9F36-4929FD104D43}
    HKEY_CLASSES_ROOT\TypeLib\{6D3F5DE4-E980-4407-A10F-9AC771ABAAE6}
    HKEY_CLASSES_ROOT\GoRSDN.ContextItem
    HKEY_CLASSES_ROOT\GoRSDN.ContextItem.1
    HKEY_CLASSES_ROOT\Pugi.PugiObj
    HKEY_CLASSES_ROOT\Pugi.PugiObj.1
    HKEY_CLASSES_ROOT\ToolBand.hits
    HKEY_CLASSES_ROOT\ToolBand.hits.1
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Code Store Database\Distribution Units\{5F1ABCDB-A875-46C1-8345-B72A4567E483}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\DotComToolbar
    HKEY_ALL_USERS\Software\DotComToolbar
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\ModuleUsage\C:/WINDOWS/Downloaded Program Files/toolbar_nieuw14.dll
    HKEY_ALL_USERS\Software\Microsoft\Internet Explorer\MenuExt\&RSDN Search
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DownloadManager
    HKEY_ALL_USERS\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser\{5F1ABCDB-A875-46C1-8345-B72A4567E486}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Toolbar\{5F1ABCDB-A875-46c1-8345-B72A4567E486}
    HKEY_ALL_USERS\Software\Microsoft\Internet Explorer\Main\Default_Search_URL

  5. Navigate to the key:

    HKEY_ALL_USERS\Software\Microsoft\Internet Explorer\Search

    Delete the following value:

    "SearchAssistant" = "Explorer"

  6. Navigate to the key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion

  7. In the right pane, delete the value:

    "SharedDlls" = "C:\WINDOWS\Downloaded Program Files\toolbar_nieuw14.dll"

  8. Exit the Registry Editor.

4. To reset the Internet Explorer home page
  1. Start Microsoft Internet Explorer.
  2. Connect to the Internet, and then go to the page that you want to set as your home page.
  3. Click Tools > Internet Options.
  4. In the Home page section of the General tab, click Use Current > OK.

For additional information, or if this procedure does not work, read the Microsoft® Knowledge Base article: Home Page Setting Changes Unexpectedly, or You Cannot Change Your Home Page Setting, Article ID 320159 .

    5. To reset the Internet Explorer Search page
    Follow the instructions for your version of Windows.

    Windows 98/Me/2000
    1. Start Microsoft Internet Explorer.
    2. Click the Search button on the toolbar.
    3. In the Search pane, click Customize.
    4. Click Reset.
    5. Click Autosearch Settings.
    6. Select a search site from the drop-down list, and then click OK.
    7. Click OK.

    Windows XP
    Because Windows XP is set by default to use animated characters in the search, how you do this can vary. Read all the instructions before you start.
    1. Start Microsoft Internet Explorer.
    2. Click the Search button on the toolbar.
    3. Do one of the following:
      • If the pane that opens looks similar to the following picture, click the word Customize and proceed to step h:




      • If the pane that opens has the words "Search Companion" at the top, and the center looks similar to the following picture, click the Change preferences link and proceed with step d.




    4. Click the Change Internet search behavior link.
    5. Under "Internet Search Behavior," click With Classic Internet Search.
    6. Click OK. Then close Internet Explorer. (Close the program for the change to take effect.)
    7. Start Internet Explorer. When the search pane opens, it should look similar to the following picture:





      Click the word Customize, and then proceed with the next step.

    8. In the Search pane, click Customize.
    9. Click Reset.
    10. Click Autosearch Settings.
    11. Select a search site from the drop-down list, and then click OK.
    12. Click OK.
    13. Do one of the following:
      • If you were using (or want to continue using) the "Classic Internet Search" panel, stop here (or proceed with the next section).
      • If you want to go back to the "Search Companion" search (it usually has an animated character at the button), proceed with step n.

    14. Click the word Customize again.
    15. In the "Customize Search Settings" window, click Use Search Companion > OK.
    16. Close Internet Explorer. The next time you open it, it will again use the Search Companion.