Win32:InstalleRex-BO [PUP] virus removal – How to totally get rid of Win32:InstalleRex-BO [PUP] virus to protect your PC

Found Win32:InstalleRex-BO[PUP] Trojan virus on your PC, but it is difficult to get rid of Win32:InstalleRex-BO [PUP] from Windows? Where did you pick up this risky Trojan horse virus? Is it still safe for you to use the computer? What can you do to remove Win32:InstalleRex-BO [PUP] virus and prevent it damaging your system? Read the post here to find the answers.

What is Win32:InstalleRex-BO [PUP] Virus?

Win32:InstalleRex-BO [PUP] virus is one of the newest Trojan horse infection that takes advantage of security loopholes to launch an attack. Normally, it is bundled with spam e-mail attachments and freeware installation packages. So you may not notice it. That is to say, this virus usually sneaks into your PC quietly.

As a highly risky Trojan horse virus, Win32:InstalleRex-BO [PUP] is able to cause many terrible consequences. On one hand, it compromises the entire system, as well as trigger a series of PC malfunctions. On the backstage, this threat damages important system files, as well as exploits system leaks. As a result, you keep receiving system error messages, and additional malware can invade your workstation without any effort, like Virus:win64/rovnix.gen!c, Backdoor.Generic18.UIY tr1, and Trojan Win32:FunWeb-K [PUP].

On the other hand, Win32:InstalleRex-BO [PUP] is a typical Trojan, so that hackers make use of it to steal data. So, your privacy and information stored in the infected machine are all endangered. Generally speaking, hackers prefer to steal financial data like bank accounts, passwords, credit card details and so on. So, in addition to severe PC malfunctions, Win32:InstalleRex-BO [PUP] may also lead to financial losses, privacy exposure and other tragic results.

In conclusion, once Win32:InstalleRex-BO [PUP] is detected in your machine, you should take immediate action to get rid of it. Compared to manual removal, we recommend you installing a powerful automatic virus removal tool.

Why Security Tools Fail to Prevent Win32:InstalleRex-BO [PUP] Virus?

When you download tainted freeware from the untrustworthy websites or open a spam email unwittingly and voluntarily, the installed security tools are unable to detect the embedded virus for you for that they have no authority and ability. By the time they sense the existence of the threat, Win32:InstalleRex-BO [PUP] virus has made various changes in the computer, like creating its own registry entries, tempering start-up list and dropping files into system folder. Consequently, this Trojan can be reinstated after antivirus programs remove Win32:InstalleRex-BO [PUP] files (normally not all of them). In some cases, the security tools themselves are disabled by the threat unfortunately.

How to Remove Win32:InstalleRex-BO [PUP] Virus

Step One: Enter Safe Mode.

*For Windows 7/Vista/XP users:

a. Restart the computer. Before Windows Welcome interface appears, please tap F8key constantly until Windows Advanced Options Menu displays.

b. On the black screen of Windows Advanced Options Menu, use the arrow key to move down and choose Safe Mode option by highlighting it. Then hit Enter on the Keyboard.

*For Windows 8 users:

a. Select Settings on the charm bar and then Power options. Press and hold Shift key on the keyboard and click Restart.

b. Click Troubleshoot on the displaying Choose an option menu and then Advanced option to proceed.

c. Choose Windows Startup Settings next and press Restart. After that, the computer will reboot and show nine start-up settings, click F4 to enter Safe Mode.

Step Two: Empty temp files to clean out harmful files.

a. Hold and press Win + R key together and bring up Run box.

b. Put in %temp% and hit Enter key, temp file folder will display automatically.

c. Select all items by pressing Ctrl + A key together, right click the mouse and select delete to remove them all.

Step Three: Get rid of registry items related to Win32:InstalleRex-BO [PUP].

a. Back up registry entries in case of any mistaken operation.

To know how to back up registry files, please click here to know more.

b. Tap Win + R key altogether to display Run box. Open Registry Editor by putting regedit in Runbox and hit Enter.

c. Look through the registry entries and find out all listed harmful items. Right click on them and click Delete to remove.

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings “CertificateRevocation” = ‘1’

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Attachments “SaveZoneInformation” = ‘0’

d. Examine following entries respectively. Seeing any suspicious key value started with Run, right click on it and select Delete.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Current Version

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders Startup=”C:\windows\start menu\programs\startup

Step Four: Terminate processes and service run by Win32:InstalleRex-BO [PUP] virus.

a. Activate Task Manager. Click Ctrl + Alt +Delete for Win 7/XP users, and Ctrl + Shift + ESC for Win8 users.

b. Move to View tab and choose Select Columns from the list. Tick Image Path Nameand PID, click OK.

c. Search for harmful processes and services of the virus listed in the following. Click on the items to select them and click End processes.

random.exe

Step Five: Delete hidden files of Win32:InstalleRex-BO [PUP] virus.

*For Windows 7/XP/Vista users

a. Open Control Panel from Start menu and choose Folder Options to proceed.

b. Find Viewtab and select Show hidden files and folders at Advanced Settings column. Then click OK to apply the change.

c. Search for the futile files listed below in the computer by following the path name and delete them permanently.

%AllUsersProfile%

%AllUsersProfile%\Programs\{random letters}\

%AllUsersProfile%\Application Data\~r

%AllUsersProfile%\Application Data\~dll

*For Windows 8 users

a. Open Windows Explorer from Start screen, navigate to View tab. At Show/Hide column, tick both File name extensions and Hidden items and hit Enter.

b. All hidden malicious files outlined below are now displaying. Find out all of them and remove altogether.

C:\Windows/system/user32

c:\Windows\System32\services.exe

C:\WINDOWS\system32\winntddu.dll

C:\Windows\Installer\{648c7366-661d-8c7c-a2b5-bfc01b210a94}\U\000000CB.

Can’t remove Win32:InstalleRex-BO[PUP] completely? It is not difficult to get rid of it if you could carefully follow the virus removal instructions above.