Unfriend Check installs on your PC along with free software. This method is called "bundled installation". Freeware offers you to install additional module (Unfriend Check). Then if you fail to decline the offer it starts hidden installation. Unfriend Check copies its file(s) to your hard disk. Its typical file name is ButtonSite.dll. Sometimes it creates new startup key with name Unfriend Check and value ButtonSite.dll. You can also find it in your processes list with name ButtonSite.dll or Unfriend Check. Also, it can create folder with name Unfriend Check under C:\Program Files\ or C:\ProgramData. After installation Unfriend Check starts displaying ads, pop-ups, banners on your PC or in browsers. It is recommended to remove Unfriend Check immediately.

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Removes all files created by Unfriend Check.

Removes all registry entries created by Unfriend Check.

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Threat's description and solution are developed by Security Stronghold security team.

Here you can also learn:

Technical details of Unfriend Check threat.

Manual Unfriend Check removal.

Download Unfriend Check Removal Tool.

How to remove Unfriend Check manually

This problem can be solved manually by deleting all registry keys and files connected with Unfriend Check, removing it from starup list and unregistering all corresponding DLLs. Additionally missing DLL's should be restored from distribution in case they are corrupted by Unfriend Check.

To get rid of Unfriend Check, you should:

1. Kill the following processes and delete the appropriate files:

AddonsFramework.Typelib.dll

background.html

BackgroundHost.exe

BackgroundHost64.exe

BackgroundHostPS.dll

bg.js

ButtonSite.dll

ButtonSite64.dll

config.xml

content.js

icon128.png

icon16.png

icon18.ico

icon18.png

icon32.png

icon48.png

jquery-1.9.1.min.js

json2.min.js

mz\background.js

mz\content.js

ScriptHost.dll

unfriendcheck.rdf

uninst.exe

uninstall.exe

updater.js

updaterWrapper.js

Warning: you should delete only those files which checksums are listed as malicious. There may be valid files with the same names in your system. We recommend you to use WiperSoft Antispyware Malware Remediation Tool for safe problem solution.

**Trial version of Wipersoft provides detection of computer viruses for FREE. To remove malware, you have to purchase the full version of Wipersoft.

2. Delete the following malicious folders:

%APPDATA%\PlusWinks\

%APPDATA%\UnfriendCheck\

%PROGRAMFILES%\Unfriend Check\

%APPDATA%\IBUpdaterService\

3. Delete the following malicious registry entries and\or values:

Key: HKLM\SOFTWARE\Classes\Unfriend Check.BackgroundHostObject

Key: HKLM\SOFTWARE\Classes\Unfriend Check.BackgroundHostObject\CLSID

Key: HKLM\SOFTWARE\Classes\Unfriend Check.BackgroundHostObject\CurVer

Key: HKLM\SOFTWARE\Classes\Unfriend Check.BackgroundHostObject.1

Key: HKLM\SOFTWARE\Classes\Unfriend Check.BackgroundHostObject.1\CLSID

Key: HKLM\SOFTWARE\Classes\Unfriend Check.Navbar

Key: HKLM\SOFTWARE\Classes\Unfriend Check.Navbar\CLSID

Key: HKLM\SOFTWARE\Classes\Unfriend Check.Navbar\CurVer

Key: HKLM\SOFTWARE\Classes\Unfriend Check.Navbar.1

Key: HKLM\SOFTWARE\Classes\Unfriend Check.Navbar.1\CLSID

Key: HKLM\SOFTWARE\Classes\Unfriend Check.ScriptHostObject

Key: HKLM\SOFTWARE\Classes\Unfriend Check.ScriptHostObject\CLSID

Key: HKLM\SOFTWARE\Classes\Unfriend Check.ScriptHostObject\CurVer

Key: HKLM\SOFTWARE\Classes\Unfriend Check.ScriptHostObject.1

Key: HKLM\SOFTWARE\Classes\Unfriend Check.ScriptHostObject.1\CLSID

Key: HKLM\SOFTWARE\Classes\Unfriend Check.Tool

Key: HKLM\SOFTWARE\Classes\Unfriend Check.Tool\CLSID

Key: HKLM\SOFTWARE\Classes\Unfriend Check.Tool\CurVer

Key: HKLM\SOFTWARE\Classes\Unfriend Check.Tool.1

Key: HKLM\SOFTWARE\Classes\Unfriend Check.Tool.1\CLSID

Key: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects
\{4723AAA8-B2F9-4CC1-9E60-190976DB1FA4}

Key: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects
\{922E3C86-5368-4040-813F-4945BB22634E}

Key: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects
\{D5FEC983-01DB-414a-9456-AF95AC9ED7B5}

Key:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Cool Smiley Bar for Facebook

Key: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PlusWinks

Key:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Unfriend Check

Key:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Updater Service

Key:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{EE24665C-844A-4489-9F11-70E41F4EE476}

Key:
HKLM\SOFTWARE\Google\Chrome\Extensions\loljhpcjeefifgjbhjpikjmpmofefdfd

Key:
HKLM\SOFTWARE\Google\Chrome\Extensions\mocblcnaofikinigmceddfghppkkjbog

Key:
HKLM\SOFTWARE\Google\Chrome\Extensions\nkcpopggjcjkiicpenikeogioednjeac

Key: HKCU\Software\IBUpdaterService

Key: HKCU\Software\Unfriend Check

Warning: if value is listed for some registry entries, you should only clear these values and leave keys with such values untouched. We recommend you to use WiperSoft Antispyware Malware Remediation Tool for safe problem solution.

Uninstall Unfriend Check related programs from Control Panel

We recommend you to check list of installed programs and search for Unfriend Check entry or other unknown and suspicious programs. Below are instructions for different version if Windows. In some cases adware programs are protected by malicious service or process and it will not allow you to uninstall it. If Unfriend Check won't uninstall or gives you error message that you do not have sufficient rights to do this perform below instructions in Safe Mode or Safe Mode with Networking or use WiperSoft Antispyware Malware Remediation Tool.

Windows 10

Click on the Start menu and choose Settings
Then click on System and choose Apps & Features in the left column
Find Unfriend Check under in the list and click Uninstall button near it.
Confirm by clicking Uninstall button in opened window if necessary.

Windows 8/8.1

Right click on the bottom left corner of the screen (while on your desktop)
In the menu choose Control Panel
Click Uninstall a program under Programs and Features.
Locate Unfriend Check or other related suspicious program.
Click Uninstall button.
Wait until uninstall process is complete.

Windows 7/Vista

Click Start and choose Control Panel.
Choose Programs and Features and Uninstall a program.
In the list of installed programs find Unfriend Check
Click Uninstall button.

Windows XP

Click Start
In the menu choose Control Panel
Choose Add / Remove Programs.
Find Unfriend Check related entries.
Click Remove button.

Protect computer and browsers from infection

Adware threats like Unfriend Check are very wide-spread, and unfortunatelly many antiviruses fail to detect it. To protect your computer from future infection we recommend you to use SpyHunter, it has active protection module and browser settings guard. It does not conflict with any antiviruses and creates additional shield against threats like Unfriend Check.

How to remove Unfriend Check (ads, banners, deals)

Threat's profile

Unfriend Check intrusion method