About 2 weeks ago, I clicked on a site by accident. Suddenly, my computer went crazy! It kept finding BOO/Cidox.B virus and sometimes it shut down itself without giving me any notification. I searched the removal guide on the Internet, and everyone says that I have to put my computer on safe mode and run security scan. I did that but nothing was found expect for this annoying BOO/Cidox.B which I cannot get rid of. How do I remove this virus from my computer completely?

BOO/Cidox.B Description:

BOO/Cidox.B is categorized as a Trojan horse virus that has the same ability to attack your computer like Boot.Cidex virus. Now computer running with Windows XP, Windows Vista, Windows 7 or Windows 8 is the main target of this Trojan because Microsoft Windows computer is globally used in individual, educational institutions, up to known organizations. The remote hackers who create this virus want to distribute BOO/Cidox.B virus all over the Internet. With this Trojan, they can easily access a compromised computer to steal users’ personal information without any approval and install other malware and spyware. Victims who get this Trojan infection usually report that they will come across lots of difficulties and troubles while they are functioning on the infected PC. And if the virus is not removed timely, it is capable of making your PC inaccessible and you are not able to perform any single task on your computer anymore.

Many Trojan viruses can get installed on a computer by clicking malicious code or unsafe advertising pop-ups, visiting pornographic website or downloading attachment from spam emails. If you have ever visited some shady sites or clicked any unknown pop-up message on your computer, it is very likely that your computer gets infected with BOO/Cidox.B virus. Once installed, it can inject some codes into the Internet browser so that your home page or search page will be rerouted to some affiliate sites that you don’t want at all. Then it will drop harmful files and make several changes on computer settings so that it is not surprised that your PC is running out of order. It is getting slower and slower or even frozen all the time. To get things worse, it can prevent some system files from loading that may cause Windows to give errors during boot-up all the time. You will find your computer in worse and worse condition but antivirus program can’t solve all these problems. This virus conceals inside the system and can be able to capture and send all your personal information, such as credit card details, login number/password to a remote hacker for illicit purposes. It represents security risk for the compromised system and its network environment. Considering that anti-virus programs can’t remove this Trojan virus at this moment, manual removal is the only effective solution to get rid of it. You can read the instructions below in details to remove the virus manually.

Warm prompt: It’s complicated for people who are not computer savvy or not familiar with the virus to remove the Trojan. You can contact YooCare/YooSecurity PC professional online service for help:

Bad Influence of Trojan Virus

  • Fatal error occurs often such as file missing
  • Cause some functions of OS unavailable
  • Internet Browser runs more and more slowly even freezes
  • Computer always gets vital problems

Removal Guide for PCs with Windows OS

>>>>>> Press Ctrl+Shift+Esc keys simultaneously to get the Task Manager to stop the active processes of BOO/Cidox.B virus. To do this, you will need to click the “Processes” tag at the top then find out the suspicious processes and right click on them and select “End Process”.


>>>>>> Click “Start” menu at the lower left corner and type “regedit” in the search programs and files box and press Enter key. Then you will open the “Registry Editor”.


>>>>>> You will need to find out the suspicious registry files in the Registry Editor, They are usually located in: HKEY_LOCAL_MACHINE > SOFTWARE. You will need to distinguish them from their “Name” and “Data” at the right column. All of them will be randomly distributed. If you are not good at this, ask for an expert for help.

registry editor

>>>>>> After you find out the suspicious registry files, you also will know where the .exe files of the virus locate. Usually, they will be in the operating system drive. To open it, you will need to click Start menu > Computer & My computer. Generally speaking, the Operating System drive is Local Disk (C:).


>>>>>> Basically speaking, all the related files of BOO/Cidox.B virus will be located in Windows > System32. Find out all the files of the scam virus and delete them. Make sure that all the files you deleted are viruses, not the files of the operating system. Any mistakes will cause data loss even system crash.


Video of Key Steps on How to Modify or Change Windows Registry:


BOO/Cidox.B is a tricky Trojan that can be filled in your system as fast as you never imagine. It can bypass most security scans though Avira antivirus has the chance to detect it, it doesn’t mean your computer can be safe. This kind of virus can infect master boot record (MBR) of the compromised PC so that it is hard to remove. It can be used to download and install other threats from a remote server without your permission. In addition, after MBR is infected, you will find computer goes crazy all the time. While you are working on the computer, you may get some unwanted pop up messages displayed on your computer without your permission and also blue screen of death could happen randomly which totally destroys the whole computer system. This virus can carry out many harmful activities like modifying critical system files, bringing other malicious files and malware to the infected PC to make your computer more vulnerable to be attacked and violating your privacy and compromises your security. Don’t hesitate to remove it once it is found.

Published by Tony Shepherd & last updated on January 1, 2014 5:37 am

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