THREAT REMOVAL

Updatechecker.exe Miner Trojan and Adware – How to Detect + Remove It

Update July 2019! This article has been created in order to explain what exactly is the Updatechecker.exe process and how to remove this adware and miner Trojan completely from your PC.

A new silent Trojan horse which displays advertisements and uses a cryptocurrency miner has been detected by malware analysts. The malware, also known as Updatechecker.exe, because of the process it runs, pretending to be a Windows Update, has been reported to use the CPU and GPU resources on the infected PCs by it in order to obtain cryptocurrencies. In addition to this, the Updatechecker.exe also has modules, whose primary purpose is to display advertisements on the computer of the victim, that may introduce other risks on it as well. If you see the Updatechecker.exe or Taskhostw.exe processes running in the background of your computer, recommendations are to read the following article and learn how to remove Updatechecker.exe from your computer.

Threat Summary

Name Updatechecker.exe Miner
Type Miner Trojan and Adware
Short Description Aims to run two processes, one of which displays advertisements and the other one mines for cryptocurrencies, like BitCoin or Monero.
Symptoms Your computer may slow down, freeze at times and multiple different advertisements are also displayed.
Distribution Method Spam Emails, Email Attachments, Executable files, Fake setups
Detection Tool See If Your System Has Been Affected by malware

Download

Malware Removal Tool

User Experience Join Our Forum to Discuss Updatechecker.exe Miner.

Updatechecker.exe Miner – How Did I Get It

The primary method via which your computer could have become infected with the Updatechecker Adware Miner is believed to be a fake setup or a program which you may have downloaded from the web, believing is legitimate. Such malware usually pretends to be:

  • Setup of a driver.
  • Installer of a free program or a game.
  • Patch for game.
  • Crack or other license activator.
  • Key generator for activation.

In addition to via fake setups of programs, there is also the likelihood that you may have clicked on a malicious web link that may have been sent to you via e-mail or via chat service, like Messenger, Viber, etc.

Updatechecker Miner Trojan – Malicious Activity

Once this malware has been installed on your computer system, it drops the following files on it:

  • Updatechecker.exe
  • Taskhostw.exe

What is actually Update Checker (Updatechecker.exe)? The Updatechecker.exe is the main malicious file, which is also responsible for the advertisements displayed by the virus. After the file is ran, it launches the other process, called Taskhostw.exe, whose purpose is to connect your computer to a mining pool. Such mining pools are the primary places where computers join their efforts to mine for cryptocurrency tokens, like BitCoins or Monero. This procedure results in various different side effects, such as your computer slowing down significantly, due to over usage of your central processing unit (CPU) or graphics processor (GPU). The malware also keeps an active connection to a pool but credits all of the mined cryptocurrency tokens to the wallet of the cyber-criminals who have created it at the expense of using your PC’s resources.

Both of the files Taskhostw.exe and Updatechecker.exe aim to imitate legitimate Windows processes and both of them are dropped in the following directory:

%AppData%\Local\Microsoft\Windows Update

In addition to mining for cryptocurrencies, this Trojan may perform a series of malicious activities on your PC, like:

  • Log your keystrokes.
  • Take screenshots from it.
  • Make sure that you cannot access some administrative directories.
  • Steal files directly from your PC.
  • Obtain passwords and logins from your web browser.

Furthermore, since it is also adware, the Trojan may display series of advertisements on your computer system, which can lead you to various suspicious sites, like tech support scams, financial scamming ones and even malicious websites, that may infect your computer with malware. The advertisements displayed may come in different forms, such as:

  • Banners replaced on the legitimate sites you have visited.
  • Pop-ups that may appear with animations and sounds.
  • Highlighted text pop-ups, hijacking legitimate web pages.
  • Browser redirections.

Bitcoin miners and adware are not a new thing, even though the miners are a developing trend. However, this is the first time, where we actually have the chance to see adware in combination with a Trojan horse, containing a cryptocurrency miner – quite impressive and likely done by an experienced programmer. Removal of this malware is highly advisable because it can damage the components on your computer and steal important information from it. In addition to this, we also advise you to change all of your passwords from a safe device.

Remove Updatechecker.exe Miner Adware Trojan from Your PC

In order to remove Updatechecker.exe malware, we recommend that you follow the removal instructions underneath this article. They are divided into manual and automatic removal manuals and if manual removal is not something you are used to doing, experts advise downloading and installing advanced anti-malware software to automatically scan your computer and remove Updatechecker.exe Miner and adware. Such software will also ensure that your computer is protected against infections in the future as well.

Avatar

Ventsislav Krastev

Ventsislav is a cybersecurity expert at SensorsTechForum since 2015. He has been researching, covering, helping victims with the latest malware infections plus testing and reviewing software and the newest tech developments. Having graduated Marketing as well, Ventsislav also has passion for learning new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management, Network Administration and Computer Administration of System Applications, he found his true calling within the cybersecrurity industry and is a strong believer in the education of every user towards online safety and security.

More Posts - Website

Follow Me:
Twitter


Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer

How to Remove Updatechecker.exe Miner from Windows.


Step 1: Boot Your PC In Safe Mode to isolate and remove Updatechecker.exe Miner

OFFER

Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your PC with SpyHunter

Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter's malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria

1. Hold Windows key() + R


2. The "Run" Window will appear. In it, type "msconfig" and click OK.


3. Go to the "Boot" tab. There select "Safe Boot" and then click "Apply" and "OK".
Tip: Make sure to reverse those changes by unticking Safe Boot after that, because your system will always boot in Safe Boot from now on.


4. When prompted, click on "Restart" to go into Safe Mode.


5. You can recognise Safe Mode by the words written on the corners of your screen.


Step 2: Uninstall Updatechecker.exe Miner and related software from Windows

Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:


1. Hold the Windows Logo Button and "R" on your keyboard. A Pop-up window will appear.


2. In the field type in "appwiz.cpl" and press ENTER.


3. This will open a window with all the programs installed on the PC. Select the program that you want to remove, and press "Uninstall"
Follow the instructions above and you will successfully uninstall most programs.


Step 3: Clean any registries, created by Updatechecker.exe Miner on your computer.

The usually targeted registries of Windows machines are the following:

  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce

You can access them by opening the Windows registry editor and deleting any values, created by Updatechecker.exe Miner there. This can happen by following the steps underneath:

1. Open the Run Window again, type "regedit" and click OK.


2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.


3. You can remove the value of the virus by right-clicking on it and removing it.
Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.

IMPORTANT!
Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.

Step 4: Scan for Updatechecker.exe Miner with SpyHunter Anti-Malware Tool

1. Click on the "Download" button to proceed to SpyHunter's download page.


It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria.


2. After you have installed SpyHunter, wait for it to update automatically.

SpyHunter5-update-2018


3. After the update process has finished, click on the 'Malware/PC Scan' tab. A new window will appear. Click on 'Start Scan'.

SpyHunter5-Free-Scan-2018


4. After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the 'Next' button.

SpyHunter-5-Free-Scan-Next-2018

If any threats have been removed, it is highly recommended to restart your PC.


Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer

Get rid of Updatechecker.exe Miner from Mac OS X.


Step 1: Uninstall Updatechecker.exe Miner and remove related files and objects

OFFER
Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your Mac with SpyHunter for Mac
Keep in mind, that SpyHunter for Mac needs to purchased to remove the malware threats. Click on the corresponding links to check SpyHunter’s EULA and Privacy Policy


1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:


2. Find Activity Monitor and double-click it:


3. In the Activity Monitor look for any suspicious processes, belonging or related to Updatechecker.exe Miner:

Tip: To quit a process completely, choose the “Force Quit” option.


4. Click on the "Go" button again, but this time select Applications. Another way is with the ⇧+⌘+A buttons.


5. In the Applications menu, look for any suspicious app or an app with a name, similar or identical to Updatechecker.exe Miner. If you find it, right-click on the app and select “Move to Trash”.


6: Select Accounts, after which click on the Login Items preference. Your Mac will then show you a list of items that start automatically when you log in. Look for any suspicious apps identical or similar to Updatechecker.exe Miner. Check the app you want to stop from running automatically and then select on the Minus (“-“) icon to hide it.


7: Remove any left-over files that might be related to this threat manually by following the sub-steps below:

  • Go to Finder.
  • In the search bar type the name of the app that you want to remove.
  • Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
  • If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.

In case you cannot remove Updatechecker.exe Miner via Step 1 above:

In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:

Disclaimer! If you are about to tamper with Library files on Mac, be sure to know the name of the virus file, because if you delete the wrong file, it may cause irreversible damage to your MacOS. Continue on your own responsibility!

1: Click on "Go" and Then "Go to Folder" as shown underneath:

2: Type in "/Library/LauchAgents/" and click Ok:

3: Delete all of the virus files that have similar or the same name as Updatechecker.exe Miner. If you believe there is no such file, do not delete anything.

You can repeat the same procedure with the following other Library directories:

→ ~/Library/LaunchAgents
/Library/LaunchDaemons

Tip: ~ is there on purpose, because it leads to more LaunchAgents.


Step 2: Scan for and remove malware from your Mac

When you are facing problems on your Mac as a result of unwanted scripts, programs and malware, the recommended way of eliminating the threat is by using an anti-malware program. Combo Cleaner offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.



Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Remove Updatechecker.exe Miner from Google Chrome.


Step 1: Start Google Chrome and open the drop menu


Step 2: Move the cursor over "Tools" and then from the extended menu choose "Extensions"


Step 3: From the opened "Extensions" menu locate the unwanted extension and click on its "Remove" button.


Step 4: After the extension is removed, restart Google Chrome by closing it from the red "X" button at the top right corner and start it again.


Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Erase Updatechecker.exe Miner from Mozilla Firefox.

Step 1: Start Mozilla Firefox. Open the menu window


Step 2: Select the "Add-ons" icon from the menu.


Step 3: Select the unwanted extension and click "Remove"


Step 4: After the extension is removed, restart Mozilla Firefox by closing it from the red "X" button at the top right corner and start it again.



Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Uninstall Updatechecker.exe Miner from Microsoft Edge.


Step 1: Start Edge browser.


Step 2: Open the drop menu by clicking on the icon at the top right corner.


Step 3: From the drop menu select "Extensions".


Step 4: Choose the suspected malicious extension you want to remove and then click on the gear icon.


Step 5: Remove the malicious extension by scrolling down and then clicking on Uninstall.



Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Remove Updatechecker.exe Miner from Safari.


Step 1: Start the Safari app.


Step 2: After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.


Step 3: From the menu, click on "Preferences".

stf-safari preferences


Step 4: After that, select the 'Extensions' Tab.

stf-safari-extensions


Step 5: Click once on the extension you want to remove.


Step 6: Click 'Uninstall'.

stf-safari uninstall

A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the Updatechecker.exe Miner will be removed.


How to Reset Safari
IMPORTANT: Before resetting Safari make sure you back up all your saved passwords within the browser in case you forget them.

Start Safari and then click on the gear leaver icon.

Click the Reset Safari button and you will reset the browser.


Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Eliminate Updatechecker.exe Miner from Internet Explorer.


Step 1: Start Internet Explorer.


Step 2: Click on the gear icon labeled 'Tools' to open the drop menu and select 'Manage Add-ons'


Step 3: In the 'Manage Add-ons' window.


Step 4: Select the extension you want to remove and then click 'Disable'. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click 'Disable'.


Step 5: After the unwanted extension has been removed, restart Internet Explorer by closing it from the red 'X' button located at the top right corner and start it again.


Leave a Comment

Your email address will not be published. Required fields are marked *

Time limit is exhausted. Please reload CAPTCHA.

Stay tuned
Subscribe for our newsletter regarding the latest cybersecurity and tech-related news.