How to Remove a CPU Miner from your Computer (Removal Guide)


What is a CPU Miner?

a CPU miner is a legitimate piece of software that mine’s digital currency such as bitcoin, monero, and litecoin. The problem persists in the fact that these CPU miners are spread by malware like advertising campaigns.
This results in unwanted installations of CPU miners and that may cause a computer to respond slowly because of high CPU and GPU usage.

CPU Miners and Potentially Unwanted Programs?

CPU Miners are used in malware like advertising campaigns. This basically means CPU miners are installed with other software you download from the internet. This technique is deceptive and might cause all sorts of problems with your computer and it’s behavior.

The processes to mine cryptocurrency are used all the time, this will exhaust your computer performance and will affect the user experience on the infected computer. Although a CPU Miner is not technically a virus or malware, it is categorized as a Potentially Unwanted Program if installed without the user’s knowledge.

This is a piece of code we extracted from an adware sample that contained a bitcoin miner. The adware uses a miner, “hidden” as winlogon.exe, which is a legitimate windows process.

This behavior indicates that the miner is supposed to run in the background as winlogon.exe without the user’s consent.

cpu miner deceptive trigger sandbox

cmd /c C:\Users\Desktop\AppData\Local\Temp\winlogon.exe -o pool.supportxmr.com -u 47GUyTh4RR7aPkFyecjb1DD5y6H3Laeqed9EnGh58PyBhfP5y4EDA8SSUhcFVbeXEMG1xnpZJ41F1MeSu2BmyBwsHepnKh3 -p x -k –donate-level=1 –safe -B –max-cpu-usage=75

How does a CPU Miner work?

There are two ways for a CPU miner to work in order to generate a block and create the digital currency.

Pooled mining

The first method a CPU Miner works are by mining thru what is called Pooled Mining. Pooled mining is multiple generating “miners” contributes to the generation of a block and then split the digital currency they have generated.

This results in a split of the generated cryptocurrency across all “miners” that are contributing to the generated block. Pooled mining basically means that all contributors that are generating a block get an even share of the eventually created digital currency. It’s a steady and fast way to create income.

Solo mining

Solo mining means that only one computer at the time will work on the generation of a block. This method takes a lot of resources of the computer and even more time. This is not for the novice user.

The CPU miners that are used in adware malvertising campaigns are most likely not solo miners, as they obviously do not work together and this takes years to create any digital currency. You would also need a very high hash rate (25 mh/s – 25.000 hashes/a second or higher) in order to even complete a block.

How to Remove a CPU miner from your computer?

CPU miner

To remove CPU Miner, complete the steps below

  1. Remove CPU Miner without any software
  2. Scan your computer for malware with free anti-malware software to detect and remove CPU Miner malware
  3. Read more on Malwarebytes Blog about CPU Miners and their deceptive method of distribution.

uninstall Removal Guide for adware virus popup redirect internet explorer google chrome windows 10 windows 7 windows 8 windows xp computer mac macos apple safariUninstall the CPU Miner, Adware or Potentially Unwanted Programs

In this step, we show you how to detect and manually uninstall the CPU Miner, adware and potentially unwanted programs responsible for a high CPU. Both adware and potentially unwanted programs leave traces.
After you have uninstalled any adware or potentially unwanted programs, perform an anti-malware scan with our recommended removal tools to remove any traces from your PC in order to make sure the malware infection is fully deleted from your PC.

Uninstall Adware, Malware, Virus, Potentially Unwanted Program - Windows 7

Uninstall software from Windows 7

Windows 7 users: Click the Start button in the left bottom corner, select Control Panel, select “Programs and Features“.

Windows 8 or Windows 10 uninstall Adware or Potentially Unwanted Programs

Remove Malware Adware Potentially Unwanted Programs from Windows 8 or Windows 10

Windows 8 and Windows 10 users: Right-click the Windows logo in the bottom left corner, select Control Panel, select “Programs and Features“.

Uninstall Potentially Unwanted Programs or Adware from windows 8 or Window 10

All Windows: Check the Programs List for any Potentially Unwanted Programs and click “Uninstall” or “Remove“.
Click the column “Installed On” to sort installed software by date, this makes it easier to detect recently installed software.
If you don’t know what to look for, perform a free anti-malware scan with our recommended anti-malware tools.


manual removal guide for adware virus popup redirect internet explorer google chrome windows 10 windows 7 windows 8 windows xp computer mac macos apple safariClean your Browser(s) Internet Explorer, Chrome or Firefox

In this step, we show you how to manually remove adware from your browser and how to reset the browser to default settings.

If after this step, there are still problems with a hijacked homepage or CPU (web-based) Miner in your browser, perform a malware scan with our recommended malware removal tools.


Remove Adware from Internet Explorer

Remove malicious adware from Internet Explorer

Remove adware from Internet Explorer - manage browser helper objects

Internet Explorer users: select the wrench button in the top right corner, from the menu select “Manage add-ons”.

manage add-ons internet explorer - remove browser helper objects

Check the add-ons list for any suspicious Browser Helper Objects, select the suspicious entry and click Remove or Disable. If the button is grayed out, scan your computer with malware removal tools to remove the malicious add-on.

Reset your default Homepage and Search engine for Internet Explorer

The fastest and easiest way to reset your default homepage and the search engine is by resetting Internet Explorer to default settings.

Internet Explorer Internet Options - Reset Internet Explorer

Internet Explorer users: select the wrench button in the top right corner, from the menu select “Internet Options“.

Reset Internet Explorer - Settings button

Select “Advanced” from the tab menu, Click the Reset button.

Reset Internet Explorer - Confirm Reset - Delete Personal Settings

Check “Delete personal settings” and click the Reset button.
Restart Internet Explorer for the changes to take effect.



Remove Adware from Google Chrome

Remove malicious adware from Google Chrome

Google Chrome settings

Google Chrome users: select the menu button in the top right corner, from the menu select “More Tools” and then “Extensions“.

Remove malicious Browser Extensions from Google Chrome

Search for any unknown Extension(s) from the list and remove them by clicking the trashcan icon.

Continue to the next step, Reset Google Chrome Sync.

Reset your Chrome sync

Google Chrome sync your profile with their services. If the Google Chrome browser is infected with adware, this adware is also synced with Google’s servers.
It is important to clean this cache. If you don’t clear the synced cache the problem keeps coming back on any devices the profile is synchronized with.

  1. Open your Google Dashboard. Make sure you are signed in to your Google Account.
  2. Click Reset sync to stop syncing and clear all of your synced data.
  3. Click OK.

google chrome reset sync

Continue to the next step, reset Google Chrome.

Reset your default Homepage and Search engine for Google Chrome

The fastest and easiest way to reset your default homepage and the search engine is by resetting Google Chrome to default settings.

Reset Google Chrome - Settings menu

Google Chrome users: select the menu button in the top right corner, from the menu select “Settings“.

Google Chrome advanced settings

Scroll down to “Advanced” and again Scroll down to Reset settings.

Google Chrome reset settings

Click the “Reset” button to Reset Google Chrome, a new dialog appears.

Google Chrome confirm reset

Confirm the Reset of Google Chrome by clicking the “Reset” button.
Restart Google Chrome for the changes to take effect.

Continue to the next step Google Chrome Cleanup Tool

Google Chrome Cleanup Tool

The Google Chrome Cleanup tool is able to detect and remove malware from the Google Chrome browser. Chrome Cleanup tool performs a malware scan and will reset Google Chrome after the scan. The Google Chrome cleanup tool is completely free to use.

The Google Chrome cleanup tool is only meant to clean Google Chrome, it does not protect or remove malware from other browsers, obviously. The Google Chrome Cleanup utility should be used if you experience: crashes, unwanted redirects, pop-up advertisements, unwanted start-up pages or any other undesired activity within Google Chrome.

downloadDownload Chrome Cleanup Utility

Start Chrome Cleanup Tool with right click and select Run as Administrator

Chrome Cleanup Tool run as administrator

Select Yes to Accept User Account Control

Chrome Cleanup tool - UAC

Chrome Cleanup Tool is searching for malicious programs

Chrome Cleanup Tool - Searching for Programs

If malicious programs are found the Chrome Cleanup Tool will remove them for you.
Click Continue

chrome cleanup tool - programs found

After the scan, the Chrome Cleanup Tool will Reset Google Chrome to its default settings.
Click Reset to complete the Google Chrome Cleanup.

Chrome cleanup Tool - Reset Google Chrome



Remove adware from Firefox

Remove malicious adware from Firefox (Quantum)

Remove adware malware virus from Firefox

Firefox users: select the menu button in the top right corner, from the menu/list select “Add-ons“.

remove browser extension from firefox

Select Extensions from the left menu. Search any unknown Browser Extension(s) and remove it by clicking the Remove button.

Reset your default Homepage and Search engine for Firefox

The fastest and easiest way to reset your default homepage and the search engine is by resetting Firefox to default settings.

Firefox open menu

select the menu button in the top right corner, from the menu, select “Help ?” (the question mark icon, at the end of the menu).

refresh firefox for malware

select Troubleshooting information from the menu.

Refresh Firefox - reset firefox

select the Refresh Firefox button, and confirm the Refresh Firefox dialog once again to Reset Firefox to default settings.
Click Finish, Firefox will restart.


malwarebytes removal guide for adware virus popup redirect internet explorer google chrome windows 10 windows 7 windows 8 windows xp computer mac macos apple safari1. Remove the CPU Miner with Malwarebytes



Malwarebytes is a next-generation antivirus replacement. Malwarebytes is the first of its kind for home users, employing four independent technology modules, anti-malware, anti-ransomware, anti-exploit, and malicious website protection to block and remove both known and unknown threats.

Detects and prevents contact with fake websites and malicious links. You are proactively protected from downloading malware, hacking attempts, and infected advertising. Worried about wandering into a “bad” Internet neighborhood? Now you don’t have to be.

Wraps your browser and software programs in four layers of defense, stopping attacks that use vulnerabilities in those programs to infect your computer. Clean your computer now with Malwarebytes free.

downloadDownload Malwarebytes (direct download)

Malwarebytes works great alongside Antivirus software, both Malwarebytes and Antivirus software go along and provide the best protection for your computer.

  • Run the Malwarebytes installation file.
  • Select Scan Now to perform an Anti-Malware scan.

Malwarebytes 3.2.2 main

  • Malwarebytes is scanning the computer for any viruses, trojans, adware, spyware, ransomware, and potentially unwanted programs.
    Please wait for Malwarebytes to finish the anti-malware scan, the anti-malware scan usually takes around 2 to 5 minutes to complete.

Malwarebytes 3.2.2 scanning for malware

  • When the anti-malware scan is finished, Malwarebytes will show the results of the anti-malware scan.
    To remove the detected malware from your computer, select the Quarantine Selected button.

Malwarebytes 3.2.2 quarantaine selected malware

  • All found malware will be moved to quarantine. Malwarebytes requires a reboot to complete the removal process.
  • Restart your computer.

Malwarebytes 3.2.2 detection results

  • After the reboot, all the malware detected by Malwarebytes is moved to quarantine. The removal process is finished.

Zemana Removal Guide for adware virus popup redirect internet explorer google chrome windows 10 windows 7 windows 8 windows xp computer mac macos apple safari2. Clean your PC and your Browser with Zemana Anti-Malware



Zemana Anti-Malware is a security suite which is suitable for use in addition to a primary virus scanner. This second opinion malware scanner works with the cloud principle.

This means that all data such as the malware definitions but also analyses are conducted entirely over the internet.

Zemana Features

  • Real-Time Protection – Fast and efficient malware detection and removal. Prevention of future infections.
  • Bootkit and Rootkit Remediator – Rootkit and bootkit detection and removal.
  • Adware Removal Tool – Browser hijacker removal. Detects and removes annoying browser add-on’s, unwanted apps and toolbars.
  • Ransomware Protection – Build your defense system against ransomware with Zemana AntiMalware.
  • 0-day malware protection – Increased zero-day malware protection using Cloud protection.
  • Zemana Anti-Malware is especially very effective against Browser Hijackers.

Zemana Anti-Malware features include protection against viruses, trojans, adware, and spyware. But it also provides effective protection against rootkits and ransomware boot kits.

download Download Zemana Anti-Malware

buy-with-discount Buy Zemana Anti-Malware Premium (30% FixYourBrowser discount)

  • Open the Zemana Anti-Malware installer
  • Install Zemana Anti-Malware using the default settings
  • Zemana Anti-Malware will update itself

zemana-anti-malware-main

  • Select the Scan button to perform a malware scan
  • Wait for the scan to finish, it takes a few minutes.

zemana-anti-malware-scanning

  • Select the Next button to remove the malware found on your computer

zemana-anti-malware-finished

  • That’s it. All malware is successfully removed from your computer.

zemana-anti-malware-malware-removed

download adwcleaner Removal Guide for adware virus popup redirect internet explorer google chrome windows 10 windows 7 windows 8 windows xp computer mac macos apple safari3. Remove Adware and Potentially Unwanted Programs with AdwCleaner



Malwarebytes AdwCleaner searches for adware, browser hijackers, malware files and removes them for free.
The Malwarebytes AdwCleaner tool will specifically scan for malicious Windows Services, Folders, Files, Shortcuts, Registry keys, Windows Tasks and Browser Extensions.

Malwarebytes AdwCleaner is used to clean Internet Explorer, Google Chrome, and Mozilla Firefox.

download Download Malwarebytes AdwCleaner

  • Right Click the executable AdwCleaner.exe and select “Run as Administratorthis is important.
  • Accept their terms by clicking the “I Agree” button
  • Select the Scan “Look for Adware/PUPs” button to start scanning your computer and browser for malicious files.

AdwCleaner 7 main window

  • to remove the malicious items found by Malwarebytes AdwCleaner using the detection Scan, select the Clean Remove the selected elements” button.

AdwCleaner 7 remove selected elements

  • Make sure to close all open programs and browser(s) to continue removing the detected items from your computer.
  • Click OK to continue.

Adwcleaner 7 all processes will be closed please save your work

  • Your computer is rebooted after the removal process, click Reboot Now.

Adwcleaner 7 reboot computer

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