How to remove Marquis virus from Mac OS X

Complete Marquis virus removal guide

Marquis is a potentially unwanted program operates as a browser hijacker. It comes bundled with other software downloaded off the Internet. Unfortunately, not all software adequately discloses attached apps on them. When users do not pay much attention during download/install moment, they end up into installing this type of PUPs in their device. Once intrudes, Marquis virus changes the settings of installed browsers such as Goggle chrome, Internet Explorer, Mozilla Firefox and etc. Besides, it can track users’ browsing related information.

Marquis virus promotes a fake search engine named It assigns this domain on the default search engine, homepage and URL address of a new browser tab on the installed browsers. To prevent users to restore the settings, it installs helper objects. Thus, the users left with no choice than to visit the domain all the time when they open their browsing tabs and search queries on the search box. This activity diminishes the web browsing experience.

It is noteworthy that fake search engines do not generate their own search result. They show the result by redirecting queries to, or – legitimate search engines from Google, Bing and Yahoo web browser. Furthermore, browser hijacker applications and fake search engines both have data tracking capability. They can track users’ browsing session and collect the data related to their browsing activities/habits. The list of the data includes:

  • IP addresses,
  • Geo-locations,
  • URLs of visited websites,
  • Entered search queries,
  • And other data

The Developers behind Marquis virus can share such data to potent Cybercriminals who misuse them to generate illicit revenue. Thus, data tracking can result into huge risk of privacy and can cause identity exposure. To avoid all these things from happening, you must need to remove Marquis virus and never visit site again.

How did Marquis virus intrude in my computer?

Software bundling is distribution technique that is mostly used in trick people into multiple applications downloading in a package and offering them as single. Typically, the information about the optional components is hidden behind Custom/Advanced option. When users rush download/install process and skip most of the installation steps, they often lead unwanted apps installation in their device.

Fortunately, this situation can be prevented. For this, you need to be cautious when downloading/installing software and surfing the Internet. Use official websites and direct links for any software download and avoid p2p networks, free file hosting sites and third party downloaders/installers and other untrustworthy downloading sources. Further, analyze each step using Custom/Advanced option during installation moment and opt out all additionally attached apps and decline all offers. Moreover, install some reputable antivirus tool that provides adequate PC protection and prevents any big issues.

Remove Marquis virus

Manual malware removal guide is provided below in step by step manner. Follow it so that you will not find any trouble during the removal process. You can use some reputable antivirus tool to automatically remove Marquis virus from the system.

Automatic Removal of Marquis virus (Instant Solution)

The deletion and uninstallation of components related to Marquis virus is possible through both manual as well as automatic process. However, the manual removal steps require a lot of expertise and technical knowledge. It is advised to use an automatic Marquis virus removal tool so that you can remove all the threats present in the work-station in hassle-free way. Additionally, it improves the PC security setting and protects the PC from malware attacks in future.

Remove all the suspicious files, folders and PUA related to Marquis virus from Mac OSX

Step 1: In the /Library/LaunchAgents folder, check for all the suspicious files that are generated by the adware.

In the Go to Folder … bar, type /Library/LaunchAgents

In “LaunchAgents” folder, you can check for any suspicious files or folders and move them to “Trash”. Some of the common suspicious files types are “installmac.AppRemoval.plist”, “kuklorest.update.plist” , “mykotlerino.ltvbit.plist”, “”, and so on.

Step2: Check for suspicious files and folders created by the adware in /Library /Application Support folder

In the Go to Folder.. bar, type: /Library/Application Support

Go to “Application Support” folder and check for any new files or folder that looks suspicious. Doubtful applications such as “NicePlayer” and “MPlayerX” etc. should be moved to Trash

Step3: Check for suspicious files and folders created by the adware in /Library /LaunchAgents folder:

In Go to Folder bar, type /Library/LaunchAgents

In the “LaunchAgents”, select all the recently added files and folders that looks suspicious and move them to “Trash”. Example of some of the suspicious files are “installmac.AppRemoval.plist”, “”, “mykotlerino.ltvbit.plist”, “kuklorest.update.plist” and so on.

Step4: Check for suspicious files and folders created by the adware in /Library /LaunchDaemons folder:

In the Go to Folder… bar, type: /Library/LaunchDaemons

In the “LaunchDaemons” folder, looks for all the suspicious and doubtful files that have been recently added. Some of the example of such files are “”, “”, “”, “com.avickUpd.plist” and move them to “Trash”.

Step5: Remove Marquis virus from Internet Browsers

Delete Malicious Extensions from Safari

Uninstall all the extension related to Marquis virus from “Safari”

Open the Safari Browser, In the menu bar, select “Safari” and click on “Preferences”

In the preference window, choose “Extension” and search for any newly added suspicious extension. When any suspicious extensions get detected, select the “Uninstall” button next to them. You must know that none of the extensions are necessary for daily browsing activities.

Remove all the plug-ins related to Marquis virus from “Mozilla Firefox”

Delete all the add-ons related to Marquis virus from Mozilla Firefox

Open the Mozilla Firefox. Click on the “Open Menu” present at the top right corner of the screen. In the newly opened menu, choose “Add-ons”.

In the “Extension tab”, select all the suspicious add-ons and click on the remove button next to them. Again, you can delete all the extension as none of them are necessary for the normal browser operation

Remove Malicious Extension from Google Chrome

Delete Google Chrome add-ons related to Marquis virus

Open Google Chrome and click on “Chrome menu” that is located on the top-right corner of the screen. In the drop-down menu, choose “More Tools” and select “Extensions”.

In the extension window, select all the suspicious add-ons. After tracing all of them, click on the “Trash” option button next to them. Again, if require you can delete all the extensions as they are not necessary for normal browsing activities.

Step 6:  Scan the Mac PC with an automatic Marquis virus Removal Tool

If you execute all the steps mentioned above in your Mac as it is stated, your work-station will get free from malware. However, to be sure that your PC is free malware, it is advised to scan it with a powerful anti-malware tool. Using automatic tool is also recommended because not every victims or users have expertise and technical knowledge to execute the manual process mentioned above in a proper way.

After you download the application, you have to execute in your work-station and begin the automatic scanning. On scanning, if it shows” Marquis virus threats found”. You can select its files and folders and remove it.

Note: Cliick here to get the Detailed User Guide to Use the anti-malware tool