THREAT REMOVAL

Valhalla Miner Virus — How to Detect and Remove It from Your Computer

This blog post has been created to explain what is Valhalla Miner cryptocurrency miner and show how to remove it from your computer plus protect your PC against future infections as well.

The Valhalla Miner is a new hacker tool that allows criminals to infect victim computers with dangerous cryptocurrency miners. It features a very advanced feature set and is rated as a critical threat due to its deep infection capabilities. Continue reading our in-depth removal guide to learn more about it and remove found strains.

Threat Summary

Name Valhalla Miner
Type CryptoCurrency Miner Malware
Short Description Aims to mine for different cryptocurrencies on the victim’s computer after which may begin to
Symptoms The Valhalla Miner miner may begin to slow down your computer by using over 90% of both your CPU and GPU. This may result in your cooling fans to work at higher speeds.
Distribution Method Via bundled installers, fake setups or via other PUP that has already been installed on your PC.
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Valhalla Miner Virus – Distribution Methods

The Valhalla Miner samples can be distributed in numerous ways. At the moment none of the usual methods have been detected as particularly high-impacting ones. The computer criminals can use any of them to cause infections.

The hackers can utilize email messages that are made using templates. Usually a social engineering element is used in order to coerce the victims into interacting with the samples. There are several ways that the messages can be made. Some of them can include hyperlinks that are disguised as useful links. In other cases file attachments are directly embedded in the email messages.

Lately the distribution of malware software installers through email messages has risen. The criminals acquire the setup files from the official sources and are modified to include the malware Valhalla miner code. In a similar way malware documents are crafted. They represent hacker-modified files that when opened showcase a notification prompt. It asks the users to enable the built-in macros (scripts), if they are executed the virus is downloaded from a remote server and executed. Usually such instances come under the form of rich text documents, spreadsheets and presentations.

Many hacker attacks are automated through exploit kits. They test the target systems for outdated software and use exploit code against the found vulnerabilities. Such intrusions can only be prevented by always keeping the user software and operating system updated. In the case of “zero-day” exploits where patched and secured systems get hacked the only way to protect the hosts is to employ an advanced anti-spyware solution.

Cryptocurrency miners like Valhalla can also be distributed using other malware as a secondary payload.

Valhalla Miner Malware – Malicious Activity

The Valhalla Miner is currently being advertised as up for sale on several underground hacker markets. The buyers can customize their strains by using an automated builder. This is done by connecting to a hacker-controlled bot over the Telegram messenger service. The hacker operators can be contacted a Jabber profile.

The builder allows the hackers to customize many aspects of the final payload. It is made using the .NET 4.0 framework and as such is compatible with all contemporary versions of Microsoft Windows.

The operators can opt to include a stealth protection feature that can safeguard the virus sample from anti-virus software and related applications. Usually this includes sandboxes, debugging environments and virtual machines. If such are found they can be bypassed or deleted. A proper configuration can allow the virus sample to delete itself if this cannot be done to avoid detection.

Another useful trick that can be enabled is the fake executing error message. This is a pop-up that appears when the main payload is delivered as an executable file. If the victims attempt to open it up they would get an error. Usually this would mean that the files have failed to execute, however in reality it is quite the opposite. The malware engine merely pretends to be faulty however in the mean time it is able to hook up to different processes.

In a similar way it is able to infect both user applications and system services. The stealth protection mechanisms are noteworthy for having the following options available:

  • Task Manager Evasion — Every time the task manager is started the mining process is paused. This prevents the users from seeing any resource usage spikes that occur when the malware is actively running.
  • Game Mode Option — Another feature that can be implemented in the final samples is the “game mode”. It automatically stops mining when a game is launched.
  • Cryptocurrency and Pool Customization — All mineable currencies can be used by the Valhalla Miner. Public or private pools can be hard-bundled into the malware code.
  • Quick Removal — At any time the hacker operators can remotely delete the virus samples.

Other malware actions that can follow the Valhalla Miner virus infections include the information gathering phase. It is able to extract all types of sensitive data from the compromised computers. There two main types categories — anonymous metrics and personally-identifiable data. The first one refers to information that is used for statistical purposes by the hackers — hardware, operating system and certain infection conditions. The second type refers to data that can directly expose the identity of the victims: their names, addresses, phone numbers, personal preferences, interests and etc.

The builder itself and its associated victim tracking can show the geolocation, current IP address and detailed operating system information. This information may be used by the criminals in order to connect the victims to a nearby mining pool. The choice of crypto currency is also interactive, the most profitable ones can be switched to using a simple reconfiguration of the malware.

We have followed the actual trades on the underground markets. Several individual hackers have already purchased their licenses and are planning malware attacks. We expect an incoming hacker campaign soon.

Remove Valhalla Miner Virus and Protect Your PC

Q: How Do I Remove Valhalla Miner and How Do I Protect Myself In the Future?

A: In order to remove the Valhalla Miner miner, you should first stop the malicious processes of the malware by entering Windows Task Manager and stopping the malicious task by right-clicking on the Valhalla Miner process and clicking on End Process or End Process tree. This results in the virus stopping to mine. After doing so, you may want to remove the malware preferably by following the automatic or manual removal instructions below, if you have removed malware manually and have the experience. Be advised that security experts strongly recommend to remove the Valhalla Miner miner malware automatically by downloading an advanced anti-malware software, that aims to scan for and erase all malware from your system plus protect it against future infections as well.

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

How to Remove Valhalla Miner from Windows.


Step 1: Boot Your PC In Safe Mode to isolate and remove Valhalla 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 Valhalla 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 Valhalla 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 Valhalla 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 Valhalla 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.


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Get rid of Valhalla Miner from Mac OS X.


Step 1: Uninstall Valhalla 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 Valhalla 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 Valhalla 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 Valhalla 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 Valhalla 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 Valhalla 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 Valhalla Miner files from your Mac

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


Click the button below below to download SpyHunter for Mac and scan for Valhalla Miner:


Download

SpyHunter for Mac



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


Remove Valhalla 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 Valhalla 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 Valhalla 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 Valhalla 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 Valhalla 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 Valhalla 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.


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