1: Remove Program from Extensions
Firefox:
Click on Firefox button and choose Add-ons option. In the opening window, click on Extensions section. Select it and other unfamiliar add-ons which come with it. Click remove button.

Internet Explorer:
Click on Tools menu and choose Manage Add-ons. Choose Toolbars and extensions. Find related add-ons and the components of Program. and right click to Disable.

Google Chrome:
Open Google customize menu and choose Extensions beside Tools menu. In the showing window, select suspicious extensions that you are not familiar with and click Bin button to remove them.

2: Uninstall Program and Unwanted Programs
Windows 7/vista:
(1). Open Start menu and go to Control Panel. Choose Uninstall a program.

(2). In Control Panel, select unwanted programs and click Uninstall.

(3). Follow uninstall wizard and click OK till finishing.

Windows 8:
(1). Type “control panel” in search blank. Press Enter key.

(2). In the showing Programs and Featurees, select all suspicious programs and uninstall them.

(3). Click Yes in the pop-up window to begin removal.

3: Show Hidden Files
Windows 7/vista:
(1). Enter Control Panel again to choose Folder Options.
(2). Click View tab and select Show hidden files option. Click OK button.

(3). Go to search all files related, delete them.

Windows 8:
(1). Press Windows key to enter Start screen and click Windows Explorer.

(2). Click on the View tab, check file name extensions and hidden items as shown in the picture.

(3). Go to search all files, delete them.

4: Delete Leftovers Registry
Windows 7/vista:
(1). Press Windows key and R key at and same time to open Run Commend Box.

(2). Type “regedit” to open Registry Editor.

(3). Navigate the entries keys and values related to Program. Delete the selected entries.

Windows 8:
(1). Type “regedit” in search blank and enter then enter Registry Editor.

(2).Delete all the vicious registries as below:

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Google Chrome\shell\open\command "(Default)" = "C:\Documents and Settings\test\Local Settings\Application Data\Google\Chrome\Application\chrome.exe" http://www.<random>.com/?type=sc&ts=<timestamp>&from=tugs&uid=<hard drive id>"  HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\IEXPLORE.EXE\shell\open\command "(Default)" = "C:\Program Files\Internet Explorer\iexplore.exe http://www.<random>.com/?type=sc&ts=<timestamp>&from=tugs&uid=<hard drive id>"