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Adware.Winshow

Adware.Winshow

Updated:
February 13, 2007
Risk Impact:
High
File Names:
Winshow.dll
Systems Affected:
Windows

Behavior


Adware.Winshow is an adware component that modifies the Web browser's default home page and search settings without your permission.

Symptoms


The files are detected as Adware.Winshow.

Behavior


This adware component must be manually installed, or installed as a component of another program that you install.

Antivirus Protection Dates

  • Initial Rapid Release version October 02, 2014 revision 022
  • Latest Rapid Release version February 01, 2015 revision 020
  • Initial Daily Certified version September 30, 2003
  • Latest Daily Certified version January 26, 2015 revision 023
  • Initial Weekly Certified release date October 01, 2003
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

When Adware.Winshow is executed, it performs the following actions:
  1. Modifies the Internet Explorer home page, so that when the browser is opened, it will, by default, load the advertising Web site.

  2. Modifies the Internet Explorer default search settings, so that any default search attempt would be directed to a particular controlling server, which is often affiliated with the advertiser.

  3. Adds itself as a Browser Helper Object.



The following instructions pertain to all Symantec antivirus products that support Security Risk detection.

Note: Removing this adware component from the system will likely cause the program that installed it to not function as intended. The uninstaller generally identifies the programs that will not work after uninstallation.
  1. Update the definitions.
  2. Run a full system scan and delete all the files detected as Adware.Winshow.
  3. Delete the keys that were added to the registry.
For specific details on each of these steps, read the following instructions.

1. Updating the definitions
To obtain the most recent definitions, start your Symantec program and run LiveUpdate.

2. Scanning for and deleting the files
  1. Start your Symantec antivirus program and run a full system scan.
  2. If any files are detected as Adware.Winshow, click Delete.


    Note: If your Symantec antivirus product reports that it cannot delete a detected file, write down the path and file name. Then use Windows Explorer to locate and delete the file.

3. Deleting the keys 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 and delete the keys:

    HKEY_CLASSES_ROOT\CLSID\{6CC1C918-AE8B-4373-A5B4-28BA1851E39A}

    HKEY_CLASSES_ROOT\WinShow.ViewSource

    HKEY_CLASSES_ROOT\WinShow.ViewSource.1

    HKEY_LOCAL_MACHINE\Software\CLASSES\CLSID\{6CC1C918-AE8B-4373-A5B4-28BA1851E39A}

    HKEY_LOCAL_MACHINE\Software\CLASSES\WinShow.ViewSource

    HKEY_LOCAL_MACHINE\Software\CLASSES\WinShow.ViewSource.1

    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{6CC1C918-AE8B-4373-A5B4-28BA1851E39A}

  4. Exit the Registry Editor.