The Trojan:Win32/QHosts.BF is a dangerous Trojan horse virus that sneaks in the windows based systems without the permission of the user. Immediately after installing on the computer it eats most of the computer resources due to which the speed of the system as well as performance decreased considerably. If you have installed an antivirus on the system and the system get infected with this malicious virus, you will keep receiving the pop-up alerts about this virus but you may not be able to remove this threat with the help of your antivirus. Once installed on the system the Trojan:Win32/QHosts.BF stops you to access many of the important functions and features of your computer. Whenever you try to open your Inbox, you will see a number of suspicious emails from the unknown senders.  The developers of this virus try to convince you to buy the paid version of this program to clean your PC.

The Manual Removal of Trojan:Win32/QHosts.BF
Once the computer is infected by the Trojan:Win32/QHosts.BF, you have to remove this malicious application either by using any reliable automatic removal tool or by following the complicated instructions of the manual removal method. The manual removal method instructions are as under:-

Start Your Computer in the Safe Mode
The first step of manual method is to reboot the system in the safe mode. You have to restart the computer and press F8 key to access the boot options where you need to select the safe mode option and press enter key.

Delete the Processes through Windows Task Manager
When your system start operating in the safe mode, you have to find as well as delete the malicious processes that are associated with this application. Open the windows task manager by holding Ctrl+Alt+Delete keys together and hit the Processes tab to see the list of running processes. You have to delete the following processes from the list:-
%AppData%\[RANDOM CHARACTERS]\[RANDOM CHARACTERS].exe
Delete the Associated Data
The next action that you need to take is removal of the files and folders associated with this virus. You have to find as well as delete the following files from the system file folders:-
%Desktopdir%\Trojan:Win32/QHosts.BF.lnk
%Programs%\Trojan:Win32/QHosts.BF\Trojan:Win32/QHosts.BF.lnk
Reverse the Modification in the Windows Registry
At the end click on the start menu, choose “Run” option, and type RegEdit.exe in the box to start the registry editor. With the help of registry editor you can locate and delete the corrupt registry entries created by the Trojan:Win32/QHosts.BF:-
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Trojan:Win32/QHosts.BF\DisplayIcon %AppData%\[RANDOM CHARACTERS]\[RANDOM CHARACTERS].exe,0
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Trojan:Win32/QHosts.BF
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Trojan:Win32/QHosts.BF\UninstallString “%AppData%[RANDOM CHARACTERS][RANDOM CHARACTERS].exe” -u
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce\[RANDOM CHARACTERS] %AppData%\[RANDOM CHARACTERS]\[RANDOM CHARACTERS].exe
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Trojan:Win32/QHosts.BF\ShortcutPath “%AppData%\[RANDOM CHARACTERS]\[RANDOM CHARACTERS].exe” -u
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Trojan:Win32/QHosts.BF\DisplayName Trojan:Win32/QHosts.BF
Once you are successfully able to remove the above mentioned entries you need to close the registry editor, and start the system in the normal mode to see how effectively you have made the changes. Do not forget to update your existing antivirus program before running a complete system scan in order to delete the infections caused by this threat.

How to Remove Trojan:Win32/QHosts.BF ?
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