1. Symantec/
  2. Security Response/
  3. Adware.Hithopper

Adware.Hithopper - Removal

February 13, 2007 11:38:28 AM
Hithopper Inc.
Risk Impact:
File Names:
hithopper.dll HitHopperInstaller.exe
Systems Affected:

The following instructions pertain to all Symantec antivirus products that support Security Risk detection.
  1. Update the virus definitions.
  2. Close all open browser windows.
  3. Uninstall the Hithopper toolbar using the Add/Remove Programs utility.
  4. Run a full system scan and delete all the files detected as Adware.Hithopper.
  5. Unregister the .dll file.
  6. Delete the keys that were added to the registry.

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. To close all open browser windows
As Adware.Hithopper functions as a Microsoft Internet Explorer plugin, close all the open browser windows to remove it. If you are reading this writeup in Internet Explorer, print this writeup using our printer-friendly option at the top of the page, or write down the following instructions, and then close all the open browser windows.

3. Uninstalling the Adware
Do one of the following:
    • On the Windows 98 taskbar:
      1. Click Start > Settings > Control Panel.
      2. In the Control Panel window, double-click Add/Remove Programs.
    • On the Windows Me taskbar:
      1. Click Start > Settings > Control Panel.
      2. In the Control Panel window, double-click Add/Remove Programs.
        If you do not see the Add/Remove Programs icon, click "...view all Control Panel options."
    • On the Windows 2000 taskbar:
      By default, Windows 2000 is set up the same as Windows 98. In that case, follow the instructions for Windows 98. Otherwise, click Start, point to Settings, point to Control Panel, and then click Add/Remove Programs.
    • On the Windows XP taskbar:
      1. Click Start > Control Panel.
      2. In the Control Panel window, double-click Add or Remove Programs.
  1. Click hithopper (remove only)

    You may need to use the scroll bar to view the whole list.
  2. Click Add/Remove, Change/Remove, or Remove (this varies with the operating system). Follow the prompts.

4. 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 Adware.Hithopper, click Delete.

    If you ran the Add/Remove programs applet as described in the previous section, it is possible that all the files were removed, and therefore, none of the files will be detected.
5. To unregister the dll file
  1. Click Start > Run.
  2. Type, or copy and paste, the following text:

    regsvr32 /u %SystemDrive%\hithopper\hithopper.dll

    then click OK.

6. Deleting the keys from the registry
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.

This is done to make sure all keys are removed. They may not be there if the uninstaller removed them.
  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:


  4. In the right plane, delete the value:

    "InstallDir" = "C:\HitHopper"

  5. Delete the following keys:

f. Exit the Registry Editor.

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