Removal of defaultsear.ch browser hijacker

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Якщо ви бачите defaultsear.ch as the default search page of your browser then this is a sign of your browser being seriously hijacked. This happens when users occasionally catch a trojan horse that is responsible for installation of this virus onto computers. Use these tips to get rid of defaultsear.ch from your computer.

defaultsear.ch

If you have your browser hijacked with defaultsear.ch then this means that all your search will be permanently redirected through defaultsear.ch site. The developers of this hijacker promise to really impove your browsing experience, even though we strongly doubt that this is possible. Замість цього, what you can experience is a serious system slowdown and the slowdown of your search always redirected via defaultsear.ch.

If you are not happy with the presence of defaultsear.ch on your computer (and you surely have such grounds), then you need to immediately look for the correct solution that will help you fix this problem. Please follow the tips outlined below.


defaultsear.ch removal tool:

defaultsear.ch redirect virus removal milestones:

  • Check the Local Area Network (LAN) settings of your system
  • Check whether DNS settings have been changed by Redirect Virus
  • Check your Windows HOSTS file contents
  • Check Internet Explorer add-ons. Get rid of unknown or suspicious add-ons contained there
  • Use Kaspersky TDSSKiller (TDSS Killer) application to get rid of malware belonging to the clan of Rootkit.Win32.TDSS
  • Scan your system with decent anti-virus program and malware killer
  • Consider using CCleaner to delete unwanted system/temp files and browser cache
  • The last but not the least, reset your Router back to the factory default settings
  1. Check the Local Area Network (LAN) settings of your system
  2. a) Open Internet Explorer. In Internet Explorer go to: Tools->Internet Options.
    Windows XP Example:

    Windows Vista / Windows 7 Example:

    b) Click on “Connections” tab, then click “LAN settings” button.

    c) Uncheck (untick) the checkbox under “Proxy server” option and hit OK.

  3. Check whether DNS settings have been changed by Redirect Virus:
  4. a) Open Control Panel (Start->Control Panel).
    b) Double-click “Network Connections” icon to open it.
    c) Right-click on “Local Area Connection” icon and select “Properties”.

    d) Select “Internet Protocol (TCP/IP)” and click “Properties” button.

    e) Choose “Obtain DNS server address automatically” and click OK.

  5. Check your Windows HOSTS file contents
  6. a) Go to: C:\WINDOWS\system32\drivers\etc.
    b) Double-click “hosts” file to open it. Choose to open with Notepad.

    c) The “hosts” file should look the same as in the image below. There should be only one line: 127.0.0.1 localhost in Windows XP and 127.0.0.1 localhost ::1 in Windows Vista. If there are more, then remove them and save changes. Read more about Windows Hosts file here: http://support.microsoft.com/kb/972034

    You may also reset your HOSTS file settings using the Tool of GridinSoft Trojan Killer application as shown at the picture below:

  7. Check Internet Explorer add-ons. Get rid of unknown or suspicious add-ons contained there
  8. a) Open Internet Explorer. In Internet Explorer go to: Tools->Manage Add-ons.

    b) Uninstall unknown or suspicious Toolbars or Search Providers.

  9. Use Kaspersky TDSSKiller (TDSS Killer) application to get rid of malware belonging to the clan of Rootkit.Win32.TDSS
  10. a) Download the file TDSSKiller.zip and extract it into a folder
    b) Execute the file TDSSKiller.exe.
    c) Wait for the scan and disinfection process to be over. Close all programs and press “Y” key to restart your computer.

    More detailed TDSSKiller tutorial: http://support.kaspersky.com/viruses/solutions?qid=208280684

    TDSS Rootkit Removal
    TDSS Rootkit Removal
  11. Scan your system with decent anti-virus program and malware killer
  12. The last but not the least, reset your Router back to the factory default settings
  13. Keep in mind that this step is optional and should be completed only if you have followed all the above recommendations and you still have the redirect virus on your computer. Передусім, please follow this guide: How to Reset a Router Back to the Factory Default Settings. Then you should flush DNS cache:
    a)Go to Start->Run (or WinKey+R) and type in “;cmd”; without quotation marks.

    b) In a new window please type “;ipconfig /flushdns”; without quotation marks and press Enter.

Please do not hesitate to contact us at any time if you require any help on our part of if you experience any difficulties. We hope that this information has been beneficial to you.

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