PUP.WebApp Virus Removal Guide

My laptop has been infected by PUP.WebApp virus. This PUP virus has messed up my computer so that I can not use it normally at all, I try to get rid of it by my AVG anti-virus program but it suggests me remove the virus manually. How can I remove this virus from my computer? Any help will be appreciated.

Description of PUP.WebApp Virus:

PUP.WebApp belongs to a malicious PUP virus process that can attack Windows OS computers. Usually PC users will suffer this virus infection while installing the unsafe programs or processes. This PUP.WebApp virus will change its name and position on the local Disk or registry so that most of the anti-virus programs are not able to remove it completely, and that is why many PC users have to find a manual removal for this nasty PUP virus. Once the computer has been infected by it,  PUP.WebApp will slow down the computer so that PC users have to take a long time on turning on or running programs, it can be one of the most dangerous virus processes on the Internet, PC users need to get rid of it completely and immediately.

In general, this PUP.WebApp virus can change the system settings on the infected PC, the infected PC will stay in a slow performance which makes PC users annoyed. PC users may be redirected to some malicious websites frequently and get a lot of popping-up windows since it is able to download other virus infections like browser hijack redirect, what is more, desktop image and homepage can be replaced completely as well. Thus, this PUP virus needs to be removed completely in a manual way to avoid virus damage.

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

How Can This Virus Attack the Computer?

How did you get PUP.WebApp virus on your computer? Usually these kinds of the viruses will be planted to some programs especially free programs, .exe, .bat or other executable processes and unsafe links. The computer will get the virus infection when the PC users install, open or click on these infected files. Sometimes the virus can even attack the computer by the files on the USB stick as well. Most of the unsafe website and forum will contain the virus infection, the computer can be infected while visiting these webpages.

What Damage Will be Caused by the Virus:

Generally speaking, this virus can cause terrible virus infection on the infected computer like running slowly and even computer crashing. Once this virus has been installed to the computer, PC users will have to spend a long time opening programs or turning on the infected machine. It keeps taking over the high resource of the CPU and attacking the anti-virus program, other threats can be downloaded automatically from the unsafe website as well. What is worst, the cyber criminals have ability to remote control the infected PC due to this dangerous virus, all the information is in a high-risk of being stolen, the whole computer won’t be safe anymore.

Best Way to Handle With the Trojan Virus Completely?

The Trojan horse virus is an extremely dangerous threat on the infected computer. Registry and other system settings can be modified by it completely, that is the reason the nasty redirect virus can escape the tracking of the security tools like anti-virus program or firewall. It is strongly suggested that PC user should get rid of this Trojan horse virus in a manual way to remove it. Learn more from the manual removal guide below.

Step-by-Step Manual Removal Guide:

1. Press Ctrl+Shift+ESC keys together and stop virus process in the Windows Task Manager.

(The name of the virus process can be random)


2. Show hidden files and folders.
a. For XP: Press Win+E together, click on Tools, then choose Folder Options

For Vista, 7 and 8: Press Win+E together, click on Organize, then choose Folder and search options.
b. Click the View tab.
Under Advanced settings, click Show hidden files and folders, uncheck Hide protected operating system files (Recommended) and then click OK.

3. Open Registry entries. Find out the malicious files and entries of the virus and then delete all.

Attention: Always be sure to back up your PC before making any changes.

a. Press Win+R to get the Run window. In the “Open” field, type “regedit” and click the “OK” button.


regitry editor

b. All malicious files and registry entries that should be deleted:




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

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion

4. Reboot the computer normally to take effective, when the above steps are done.

This Video Shows You How to Safely Modify Windows Registry Editor:

In summary, PUP.WebApp virus can cause a very dangerous situation on the infected computer once it has been installed to the infected computer, the entire information on the infected PC will be in a high-risk situation of being attacked by other cyber criminals. Not only can this PUP change system settings randomly but also install backdoor process to mess up the system files, anyway, this virus needs to be removed as soon as possible to keep the infected PC safe, since the anti-virus program can not handle this virus infection well, it is suggested that PC users should remove manually.

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

Published by on May 29, 2014 1:58 am, last updated on May 29, 2014 1:58 am

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