What is mbamchameleon?

The genuine mbamchameleon.sys file is a software component of Malwarebytes Chameleon by Malwarebytes .
Malwarebytes Chameleon is an anti-malware utility that is part of the Malwarebytes software. MBAMChameleon.sys is a driver file required by Malwarebytes Chameleon. This file is essential for the Malwarebytes and should not be removed.

Malwarebytes Chameleon is a tool that is designed to prevent malicious software from blocking the installation of the Malwarebytes program. It is programmed to kill any corrupted processes that actively prevent Malwarebytes from installing or running. Chameleon updates Malwarebytes to the latest definitions, and then launches its parent program automatically, and should be deployed when Malwarebytes does not install or run properly.

Founded in 2008 and headquartered in Santa Clara, California, Malwarebytes Inc., is an American Internet security company that specializes in protecting smart phones, home computers and companies. The company claims to have fixed over 250 million computers, and over five billion malware threats since 2015, and reported a growth of 10 million users in just one year—2014-2015. Several products from the Malwarebytes lineup are renowned, most notably Malwarebytes Anti-Malware.

MBAMChameleon stands for MalwareBytes Anti Malware Chameleon

Mbamchameleon.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc. The free file information forum can help you determine if mbamchameleon.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for mbamchameleon drivers in need of updating

Mbamchameleon.sys file information

The process known as Malwarebytes Chameleon Protection Driver or Malwarebytes Chameleon belongs to software Malwarebytes Chameleon or Malwarebytes Anti-Malware version by Malwarebytes (

Description: Mbamchameleon.sys is not essential for the Windows OS and causes relatively few problems. The file mbamchameleon.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 167,352 bytes (16% of all occurrences), 54,360 bytes and 4 more variants. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program is not visible. It is certified by a trustworthy company. The file is not a Windows system file. The service has no detailed description. Mbamchameleon.sys is a Verisign signed file. mbamchameleon.sys appears to be a compressed file. Therefore the technical security rating is 12% dangerous.

Recommended: Identify mbamchameleon.sys related errors

Important: Some malware disguises itself as mbamchameleon.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the mbamchameleon.sys process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


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Best practices for resolving mbamchameleon issues

A clean and tidy computer is the key requirement for avoiding problems with mbamchameleon. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the mbamchameleon.sys process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

mbamchameleon.sys [all]