Home Malware Programs Browser Plugins Masterbar

Masterbar

Posted: March 28, 2006

Masterbar is an Internet Explorer toolbar providing a web search service. It tracks user browsing habits, changes the web browser's default home and search pages to undesirable web sites and shows unsolicited commercial advertisements. Masterbar has the ability to silently update itself via the Internet. The threat can get into the computer while visiting some insecure web sites. It can also be manually installed. Masterbar runs every time the user launches Internet Explorer.

File System Modifications

  • The following files were created in the system:
    # File Name
    1 masterbar.dll
    2 qi32.dll
    3 stcloader.exe

Registry Modifications

  • The following newly produced Registry Values are:
    HKEY..\..\..\..{RegistryKeys}HKEY_CURRENT_USERSoftwareMicrosoftInternetExplorerMainDefault_Search_URL=[siteaddress]HKEY_CURRENT_USERSoftwareMicrosoftInternetExplorerMainSearchBar=[siteaddress]HKEY_CURRENT_USERSoftwareMicrosoftInternetExplorerMainSearchPage=[siteaddress]HKEY_CURRENT_USERSoftwareMicrosoftInternetExplorerMainSearchURL=[siteaddress]HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionRunstcloaderHKEY_LOCAL_MACHINESoftwareMicrosoftInternetExplorerMainDefault_Search_URL=[siteaddress]HKEY_LOCAL_MACHINESoftwareMicrosoftInternetExplorerMainSearchPage=[siteaddress]HKEY_LOCAL_MACHINESoftwareMicrosoftInternetExplorerSearchCustomizeSearch=[siteaddress]HKEY_LOCAL_MACHINESoftwareMicrosoftInternetExplorerSearchSearchAssistant=[siteaddress]

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