My computer has been running slow in these few days, so I scanned the computer and then it found Rootkit.MBR.Mayachok.B virus in my computer. However, when I tried to remove the virus, it keeps coming back. I’ve never met such a situation and didn’t know what to do right now. I cannot afford to lose my programs or documents on the system so reinstalling Windows is not an option. How do I remove this virus completely without losing my data? Any help will be highly appreciated.

Rootkit.MBR.Mayachok.B Brief Introduction:

Rootkit.MBR.Mayachok.B is categorized as a Rootkit which belongs to a type of computer program that can hide its presence of the compromised computer by showing only legitimate process running on the system. When it attacks a target machine, the first thing it does on your computer is to disable the anti-virus and the system firewall which can provide a safe environment for it to make further damages. A Rootkit allows someone to maintain command and control over a computer system, without the the computer system user knowing about it. This means that the owner of this malicious Rootkit is capable of executing files and changing system configurations on the target machine, as well as accessing log files or monitoring activity to covertly spy on the user’s computer usage. It runs high risk for your computer security and should be removed as soon as it is detected.

In addition, Rootkit.MBR.Mayachok.B can affect your MBR (as known as master boot record) that can cause BSOD, system crash, slow performance or other system errors on your computer. Once the user restarts the victim machine, the OS does not boot up anymore due to the infection of the MBR. There are many ways for this virus to sneak into a compromised computer system. Most people may wonder that how this virus affects the computer when they have installed antivirus programs on the PC. Unfortunately, Rootkit.MBR.Mayachok.B is a stubborn virus that can block all the security tools. You may claim that you have never been on any pornographic websites. But this virus can not only be hidden in pornographic websites, it can also be put on other hacked sites which look just like common ones. What’s more, it can be downloaded together with malicious programs onto your computer. It brings a lot troubles on your computer and should not be remained anymore. As mentioned above, there is no packaged application to guard against such rootkit. Manual removal is required to get rid of Rootkit.MBR.Mayachok.B completely.

Some Traits about This Trojan

-Can slow down the performance of the computer, or even blue screen.
-Can create many junk files which occupy a lot of space in hard drive
-Can download other malicious programs into computer, which make further damage.
-Your sensitive information can be stolen by hacker who can access to your computer with the help of this Trojan.
-Cay give you many redirects all the time no matter what you are doing.
-May pretend as an anti-virus program and cheat you that computer is in dangerous, and ask you to pay to remove the threats.

NOTE: If you find any of these symptoms on your computer, that proves your PC is under attack and seriously infected. If you are not a computer savvy, please contact YooSecurity Online PC Experts to remove Rootkit.MBR.Mayachok.B for you.

Manual Removal Guide of Trojan (For Computer Literate)

There is a removal guide of Trojan provided here; however, expertise is required during the process of removal, please make sure you are capable to do it by yourself.

Step 1: Find Ctrl, Alt, and Delete these 3 keys and then press them together to open task manager to end the process related to this Trojan, the name of the process of it is random.

XP task manager

Step 2: Try to find Folder Options in Control Panel, select the View tab, and then tick Show hidden files and folders and non-tick Hide protected operating system files (Recommended) and then click OK.


Step 3: Try to find the files which relate to Rootkit.MBR.Mayachok.B, and delete them all.

Step 4: Click on Start button at the right lower corner, then click on Control Panel


Then you will come to the Control Panel windows, click on Add and Remove Programs


Then try to find the program which relates to this Trojan, highlight it and choose Remove, the program’s name is random.


Step 5: Click on Start button or press Win+R, then type regedit in the box to open Registry Editor, after that, try to find
C:\Users\profile name here\AppData\

Similar video guide to modify Windows registry:


Rootkit.MBR.Mayachok.B is a high-risk virus that can bring more viruses and malware into your computer without permission. It is designed by cyber criminals in order to destroy your computer system and give your computer system security a critical strike. If your computer is infected with this virus, you may not be able to use it anymore. Sometimes when you restart the computer like usually, it just gets the blue screen of death (BSOD) and blocks you from logging on. After that, it tries to reboot again. This loop will keep repeating itself over and over. Moreover, it owns the Trojan capability so it can reveal your computer system information or personal information to those hackers who are trying to remotely control your computer. Please follow the above manual instruction to remove the virus as soon as it is detected.

Suggestion: To follow removal guide that mentioned above, a level of computer knowledge is needed. Still can’t get rid of Rootkit.MBR.Mayachok.B? Contact online experts for help now!

Published by Tony Shepherd & last updated on June 20, 2014 9:25 am

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