NRSMiner Virus – How to Remove It
THREAT REMOVAL

NRSMiner Malware – How to Remove It

WaterMiner Monero MinerThis blog post has been created with the main idea in mind to explain how you can remove the NRSMiner virus from your computer completely.

A new cryptocurrency miner malware, going by the name NRSMiner has been reported to affect computers and take advantage of the CPU and GPU resources and generate up to 100% of their usage to mine for cryptocurrencies. In addition to this, the virus may also perform other unwanted activities on the computers that have been infected by it. The main one of those could be related to spyware actions directly started on the infected machine after it has been compromised. If your computer has been infected by the NRSMiner, we would recommend that you read this article.

Threat Summary

NameNRSMiner
TypeCryptoCurrency Miner Trojan / Malware
Short DescriptionNRSMiner aims to mine for the cryptocurrency Monero at the expense of your computer’s resources.
SymptomsYour PC may begin to stagger and even become non-responsive at times. 100% of your CPU may be used by the process HPDriver.exe running actively in the background.
Distribution MethodVia fake setups or malicious e-mail spam messages.
Detection Tool See If Your System Has Been Affected by NRSMiner

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Malware Removal Tool

User ExperienceJoin Our Forum to Discuss NRSMiner.

NRSMiner – How Did I Get It

The main method via which the NRSMiner propagates is usually conducted via an exploit that is well known – Eternal Blue. This same exploit was used in the 2017

WannaCry infection outbreak. The miner propagates systems of a vulnerable network after it performs it’s first infection, but the good news is that it only attacks patched computers.

So far, F-Secure malware researchers have reported in their analysis the following main two methods by which a computer can get infected with NRSMiner:

  • Via download an update module via a system that has already been compromised by a previous version of the NRSMiner malware.
  • Via infecting a system in the same intranet that does not have the MS17-010 patch against Eternal Blue exploit. The infection may occur from an already infected device.

NRSMiner – Analysis

The main infection activity of this miner is that it first checks a mutex ({502CBAF5-55E5-F190-16321A4}) to see if the miner has already infected the victim PC before and if so, the miner malware does not run. If not however, the miner drops and runs the following main malicious file:

→%Temp%\WUDHostUpgrade.exe

Once having done this, the miner may extract the different files from it’s resources, more specifically, the following files;

→ %SystemRoot%\System32\MarsTraceDiagnostics.xml
%SystemRoot%\sysWOW64\snmpstorsrv.dll

The files may have the opposite location, but they generally are located either in sysWOW64 or system32. Once having dropped the files, NRSMiner copies data from CreationTime and LastAccessTime and LastWriteTime properties from the system process svchost.exe and updates properties for MarsTraceDiagnostics.xml and snmpstorsrv.dll files.

At last, the WUDHostUpdate.exe malicious file installs the snmpstorsrv and snmpstorsrv.dll which is registered as servicedll. Finally the virus file self-deletes.

Te newly made process, called Snmpstorsrv.dll starts with the following Windows administrator command:

→svchost.exe –k netsvcs

When started, the file performs the following malicious activities on your computer:

  • Sends Processor data.
  • Sends system information.
  • Opens port 60153.
  • Creates MgmtFilterShim.ini
  • Runs Wininit.exe
  • Downloads Updater
  • Extracts C&C and Miner configuration
  • Deletes older versions.
  • Checks for module updates.
  • Runs the new miner.

The service firstly spawns a file, called MgmtFilterShim.ini in the %systemroot%\system32 folder, writes the “+” value in it and then modifies its CreationTime, LastAccessTime and LastWritetime properties same as the ones in svchost.exe.

The virus uses the following domains to update itself and to relay information:

→ reader[.]pamphler[.]com/resource
handle[.]pamphler[.]com/modules.dat

In addition ton this, the miner executes the TurstedHostex.exe process and it connects to the following sites, where almost all of the system and network information of the infected computer is leaked:

→ pluck[.]moisture[.]tk
jump[.]taucepan[.]com

When the virus takes into account the processor of the victim PC, it then writes down several different types of files, called x86.dll and x64.dll in the %AppDiagnostics% directory. The processes get injected via Wininit.exe file into sass.exe via the spoolsv.exe backdoor installed earlier to begin mining for cryptocurrencies.

The miner component of NRSMiner uses the XMRig Monero CPU miner in order to generate Monero tokens. It runs the miner with the following commands

→“v –o fox.weilders.com:443 –u zec%d –p x –t %d –donate-level=1 –nicehash”
“z –o asthma.weilders.com”443 –u zec –p x –bfactor=12 –bsleep=1000 –donate-level=1 –nicehash”

During this time, the computer of the victim begins to slow down and may freeze very often.

Remove NRSMiner Malware from Your Computer

If you want to remove the NRSMiner virus manually, you can proceed following the manual removal underneath, which are the first two steps. You can use them in combination with the “Analysis” part of the article to delete all files spawned and created by NRSMiner and then block all of the domains it has set up connection with to relay information from your computer.

Another and more recommended removal method is if you follow the latter steps to remove the NRSMiner by scanning our PC with an advanced anti-malware program, which will detect and remove all of the associated files and objects that are related to NRSMiner on your computer. We will have you know that this is the proffered choice by security experts because not only the malware files and objects are deleted, but also your computer will be protected against most malicious files and intrusive objects in the future too.

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Ventsislav Krastev

Ventsislav has been covering the latest malware, software and newest tech developments at SensorsTechForum for 3 years now. He started out as a network administrator. Having graduated Marketing as well, Ventsislav also has passion for discovery of new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management and then Network Administration, he found his passion within cybersecrurity and is a strong believer in basic education of every user towards online safety.

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

How to Remove NRSMiner from Windows.


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

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 NRSMiner 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 NRSMiner 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 NRSMiner 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 NRSMiner 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 NRSMiner from Mac OS X.


Step 1: Uninstall NRSMiner 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 NRSMiner:

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 NRSMiner. 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 NRSMiner. 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 NRSMiner 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 NRSMiner. 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 NRSMiner files from your Mac

When you are facing problems on your Mac as a result of unwanted scripts and programs such as NRSMiner, 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 NRSMiner 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 NRSMiner 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 NRSMiner 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 NRSMiner 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 NRSMiner 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 NRSMiner 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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