Complete JS CoinMiner Virus Removal Guide (Full Instructions)

JS CoinMiner virus

An infection with the dangerous JS CoinMiner virus leads to serious security issues. Victims can restore and protect their computers by following our complete removal guide.

Remove JS CoinMiner virus and Restore PC
Manual Removal Guide
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Note for Mac users!
In case that your Mac has been affected by JS CoinMiner or you suspect that other threats are running on it you can follow detailed instructions on how to detect and remove Mac viruses so you can keep the device clean and secure.

Distribution of JS CoinMiner virus

The JS CoinMiner virus is a new virus which has been sighted in a limited attack campaign. At the moment the security researchers cannot determine the primary infection strategy. We presume that the most widely used tactics are going to be employed.

Among them are the email messages created in an automated way and sent to large lists of potential victims. The JS CoinMiner virus can be directly attached to the messages. This is one of the easiest way for the criminals to attempt the infection. However a lot of email hosting providers usually capture the signatures of the virus and as such discard such messages or label them as dangerous or spam. Other infection methods related to this one is the option of inserting hyperlinks in the body content of the messages. The links are usually labeled as leading to a familiar website or a file of user interest. Redirects can redirect to hacker-controlled sites, infected payloads or other instances that can lead to an JS CoinMiner virus infection.

The computer criminals behind the malware can create malicious sites or download portals which distribute malware of different kinds, including the JS CoinMiner virus. A popular option is the use of infected documents which may be of different types ‒ spreadsheets, rich text documents, presentations and databases. They are modified to initiate the virus once the built-in scripts are run. Usually when the files are opened a notification will ask the users to run the macros (scripts). If this is done the infection follows.

The hacker-controlled sites are specialist portals that have been created either manually or automatically by the criminals behind the JS CoinMiner virus. They can either directly distribute the threat by initiating various scripts or automated operations or link to such instances. Redirects are usually caused by email interaction, ad networks or other browsing activity. However one of the main sources is the availability of browser hijackers. They are malicious addons made for the most popular web browsers ‒ Mozilla Firefox, Google Chrome, Internet Explorer, Opera, Microsoft Edge and Safari. Once installed they not only infect the users with the malware, but also redirect the victims to a hacker-controlled site. Depending on the configuration the browser hijackers can also steal sensitive information such as any stored passwords, account credentials, history, bookmarks, form data and settings.

Impact of JS CoinMiner virus

The JS CoinMiner virus is a very dangerous JavaScript-based malware which has become very popular with computer criminals. One of the key dangers assocaited with it is that it can be run on almost every platform and conditions. Practically every device can get infected with it as JavaScript is a core language that is supported even by the most rudimentary browsers.

In essence this is a typical miner, a malware utility that utilizes the available hardware resources (processor, video card, memory) to perform complex computations that generate revenue for the criminal operators.

The JS CoinMiner virus is particularly dangerous as it has the ability to cause a lot of additional security and privacy risks. While the users may only perceive the obvious performance issues threats like this are often used as payload delivery mechanisms for other malware.

Security analysts have analyzed similar miners can also lead to any of the following consequences:

  • Malware Delivery — Miners like the JS CoinMiner virus can infect the target systems with ransomware and other threats.
  • Information Harvesting — During the early stages of infection the JS CoinMiner may harvest sensitive data from the victim computers including hardware components, installed applicaions, personally-identifiable information and user settings.
  • Sensitive System Changes — The infection process can include a module that can alter sensitive the victim system. Examples include changes to the Windows registry, the boot up process and the user applications themselves.

A dangerous consequence of the JS CoinMiner virus is the fact that depending on its configuration it can lead to an infection with a Trojan component. It allows the criminal operators to spy on the victims actions in real time. In some cases they might be able to record the microphone audio, keystrokes and mouse movement. It can also overtake control of the machine at any given moment.

As the JS CoinMiner virus is a crypto currency miner malware it includes the ability to scan for available wallets that contain digital currency and can hijack them in aither an automated or manual way. Users need to know that in many cases the infections remain hidden and they may not know that they are being spied on by unknown criminals.

This is the reason why we recommend that everyone stay protected. By using a quality anti-spyware soluton active infections can be removed and the owners will be well protected from such intrusions.

Remove JS CoinMiner virus and Restore PC

WARNING! Manual removal of the JS CoinMiner virus requires being familiar with system files and registries. Removing important data accidentally can lead to permanent system damage. If you don’t feel comfortable with manual instructions, download a powerful anti-malware tool that will scan your system for malware and clean it safely for you.

DOWNLOAD Anti-Malware Tool

 
SpyHunter anti-malware tool will diagnose all current threats on the computer. By purchasing the full version, you will be able to remove all malware threats instantly. Additional information about SpyHunter / Help to uninstall SpyHunter

JS CoinMiner virus – Manual Removal Steps

Start the PC in Safe Mode with Network

This will isolate all files and objects created by the ransomware so they will be removed efficiently. The steps bellow are applicable to all Windows versions.

1. Hit the WIN Key + R

2. A Run window will appear. In it, write msconfig and then press Enter

3. A Configuration box shall appear. In it Choose the tab named Boot

4. Mark Safe Boot option and then go to Network under it to tick it too

5. Apply -> OK

Remove JS CoinMiner from Windows

Here’s a way to remove the program. This method will work regardless if you’re on Windows 10, 8, 7, Vista or XP. Simply selecting the program and pressing delete won’t work, as it’ll leave a lot of small files. That’s bad because these leftovers can linger on and cause all sorts of problems. The best way to delete a program is to uninstall it. Here’s how you can do that:

1. Hold the “Windows” button (It’s between CTRL and Alt on most keyboards) and press “R”. You’ll see a pop-up window.

run-window-windows

2. In the textbox, type “appwiz.cpl”, then press“ Enter ”.

appwiz-cpl-command-run-windows

3. The “Programs and features” menu should now appear. It’s a list of all the programs installed on the PC. Here you can find the program, select it, and press “Uninstall“.

uninstall-malicious-software-control-panel-programs-features-windows

Remove JS CoinMiner Virus From Your Browser

Before resetting your browser’s settings, you should know that this action will wipe out all your recorded usernames, passwords, and other types of data. Make sure to save them in some way.

Removal guide for Mozilla Firefox Removal guide for Google Chrome Removal guide for Internet Explorer

    1. Start Mozilla Firefox. In the upper right corner, click on the Open menu icon and select “Add-ons“.
    add-ons-mozilla-removal-browser-hijacker-guide

    2. Inside the Add-ons Manager select “Extensions“. Search the list of extensions for suspicious entries. If you find any, select them and click “Remove“.
    remove-suspicious-extensions-mozilla-removal-browser-hijacker-guide

    3. Click again on the Open menu icon, then click “Options“.
    options-mozilla-firefox-removal-browser-hijacker-guide

    4. In the Options window, under “General” tab, click “Restore to Default“.
    restore-to-default-settings-mozilla-firefox-removal-guide-browser-hijacker

    5. Select “Search” in the left menu, mark the unknown search engine and press “Remove”.
    search-remove-unknown-search-engine-mozilla-firefox-removal-guide-browser-hijacker

    1. Start Google Chrome. On the upper-right corner, there a “Customize and Control” menu icon. Click on it, then click on “Settings“.

    settings-google-chrome-browser-hijacker-removal-guide

    2. Click “Extensions” in the left menu. Then click on the trash bin icon to remove the suspicious extension.
    delete-suspicious-extension-google-chrome-browser-hijacker-removal-guide

    3. Again in the left menu, under Chrome, Click on “Settings“. Go under “On Startup” and set a new page.
    set-new-page-google-chrome-browser-hijacker-removal-guide

    4. Afterward, scroll down to “Search“, click on “Manage search engines“.
    manage-search-engines-google-chrome-browser-hijacker-removal-guide

    5. In the default search settings list, find the unknown search engine and click on “X“. Then select your search engine of choice and click “Make default“. When you are ready click “Done” button in the right bottom corner.

1. Start Internet Explorer. Go to the “Tools” menu and click on “Manage add-ons“.
manage-add-ons-internet-explorer-removal-browser-hijacker-bestsecuritysearch

2. In the “Manage add-ons” window, bellow “Add-on Types“, select “Toolbars and Extensions“. If you see a suspicious toolbar, select it and click “Remove“.
remove-suspicious-toolbars--internet-explorer-removal-browser-hijacker

3. Then again in the “Manage Add-ons” window, in “Add-on Types“, Select “Search Providers“. Chose a search engine and click “Set as default“. Select the unknown search engine and click “Remove and Close”.
search-providers-set-engine-delete-suspicious-internet-explorer-removal-browser-hijacker

4. Open the Tools menu, select “Internet Options”.
internet-options-internet-explorer-removal-browser-hijacker

5. In the “General” tab, in “Home page”, enter your preferred page. Click “Apply” and “OK”.
enter-preferred-homepage-internet-explorer-removal-browser-hijacker

Repair Windows Registry

1. Again type simultaneously the WIN Key + R key combination

2. In the box, write regedit and hit Enter

3. Type the CTRL+ F and then write the malicious name in the search type field to locate the malicious executable

4. In case you have discovered registry keys and values related to the name, you should delete them, but be careful not to delete legitimate keys

Click for more information about Windows Registry and further repair help

Preventive Security Measures

  • Enable and properly configure your Firewall.
  • Install and maintain reliable anti-malware software.
  • Secure your web browser.
  • Check regularly for available software updates and apply them.
  • Disable macros in Office documents.
  • Use strong passwords.
  • Don’t open attachments or click on links unless you’re certain they’re safe.
  • Backup regularly your data.
  • How disturbing is this problem?

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    Author : Martin Beltov

    Martin graduated with a degree in Publishing from Sofia University. As a cyber security enthusiast he enjoys writing about the latest threats and mechanisms of intrusion.


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