How to Remove Win32.Troj.Undef(kcloud)

The antivirus program installed in the computer detects a dangerous virus called Win32.Troj.Undef(kcloud), but cannot remove it successfully? Don’t know how to remove Win32.Troj.Undef(kcloud) which has infiltrated into the computer completely without the help of the antivirus program? How dangerous would it be? This post shows you the details of the virus as well as the step by step removal guide.

Win32.Troj.Undef(kcloud) Instruction :

Win32.Troj.Undef(kcloud) is a newly released computer virus that is able to cause damages to the infected computer and steal user’s sensitive information. It lurks in some malicious websites or links released by cyber criminals, some “free” software from hacked sources and spam email attachments. You don’t know it has finished its embedding into the computer until you see the warning popping up suddenly from the antivirus program.

This virus is capable of injecting its components into the important system files and then infecting .dll files, which may generate many critical errors. It also modifies Windows Registry which facilitates itself to be active automatically whenever you power on the infected computer. Since this computer virus is polytrophic which means it can consume a large proportion of system resources, your computer will run extremely slowly. Furthermore, it has the ability to drop other viruses into the infected compute to further damage the computer system and even lead to a complete system crash. What’s more, the virus can collect your online activities including what you type, what program you run and what website you visit in the backdoor. You privacy including financial details will not be safe anymore. Thus, please remove it as soon as possible.

Win32.Troj.Undef(kcloud) can alter the settings of most antivirus programs, which prevents antivirus programs from updating normally and removing it successfully. It is even able to collapse system’s built-in security component and disable antivirus programs. Therefore, it needs and only can be removed manually.

The following instructions require certain levels of computer skills. If you’re not sure and are afraid of making any critical mistakes during the process, please live chat with YooCare Expert now.

Manual Removal Guides :

Win32.Troj.Undef(kcloud) is a malicious virus which can install itself into the computer system without your consent and awareness. It makes your computer work slowly and implants other nasty infections into the computer. To make things worse, this Trojan is a tool for the hacker to invade the infected computer to steal your information. It is recommended to remove it as quickly as possible. Users can follow the manual guide here to have this virus removed instantly.

1. Show Hidden Files

(1). Click on the Start button and then on Control Panel

(2). Click on the Appearance and Personalization link

(3). Click on the Folder Options link

(4). Click on the View tab in the Folder Options window

(5). Choose the Show hidden files, folders, and drives under the Hidden files and folders category

(6). Click OK at the bottom of the Folder Options window.

2. Delete Virus Files

(1). Delete the related registry entries through Registry Edit

Guides to open registry editor: Click “Start” menu, hit “Run”, then type “regedit”, click “OK”

While the Registry Editor is open, search and delete the following registry entries listed below:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\[RANDOM CHARACTERS].exe

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run ‘Random’


(2). Find out and remove the associated files of this virus.



%AllUsersProfile%\Application Data\~random

%AllUsersProfile%\Application Data\.dll HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Random “.exe”

Video Shows You How to Safely Modify Windows Registry Editor:

In summary, Win32.Troj.Undef(kcloud) is a high-risk computer virus that can destroy the infected computer and steal user’s personal information furtively. If you are not cautious when surfing the Internet, the computer may be attacked by it easily. It makes the infected computer perform very slowly like a snail. Besides, it can open a backdoor for the cyber criminals who created the virus to monitor your activities and record your privacy for illegal use. It is a severe threat for your privacy and shall be removed as early as possible.

If you have no idea of how to do that, please contact experts from YooCare Online Tech Support for further help.

Published by on July 10, 2013 9:29 am, last updated on July 10, 2013 9:29 am

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