Remove the Adylkuzz, msiexev.exe, & wuauser.exe Miner Trojan

  • May 21, 2017

What is Adylkuzz, msiexev.exe, & wuauser.exe Miner?

Skip this and learn how to remove Adylkuzz, msiexev.exe, & wuauser.exe Miner!

The Adylkuzz, msiexev.exe, & wuauser.exe Miner is a Trojan that utilizes a victim's computer processing power to mine the digital currency called Monero. Attackers are able to infect a computer with this Trojan by using the EternalBlue SMB exploit to remotely access the computer and then the DoublePulsar backdoor to install the miner. When the miner is installed, executables called wuauser.exe and msiexev.exe will be installed in various folders on the computer and executed to mine the digital currency.

You can read more about the Adylkuzz Miner at these two articles:

Adylkuzz Cryptocurrency Mining Malware Spreading for Weeks Via EternalBlue/DoublePulsar
Adylkuzz Cryptocurrency Miner May Have Saved You From the WannaCry Ransomware

Note: This infection is installed through a SMBv1 exploit that was patched by Microsoft in March 2017. If you were infected by this mining Trojan, then your computer does not have this security update installed. Please see this article for more information on how to obtain and install this update on various versions of Windows.

When installed, both the msiexev.exe and wuauser.exe executables will be configured as Windows services so that they run automatically when Windows starts. Once started, the miners will connect to a remote mining pool and begin mining the XMR, or Monero, cryptocurrency. When these executables are launched, the current command that is executed is:

-a cryptonight -o stratum+tcp://xmr.crypto-pool.fr:443 -u [user_id] -p x

While running, these miners will use all of the CPU resources that are available on the computer in order to mine the Monero cryptocurrency.

You can see the miner running in task manager below.

  • Adylkuzz Miner Trojan

What is particularly worrisome about this infection is that it will use the entire CPU's processing power indefinitely. This will cause your CPU to run at very hot temperatures for extended periods of time, which could shorten the life of the CPU.

As there is no outward indication that the program is running, here is a list of symptoms that a user can use to determine if they are infected with the Adylkuzz, msiexev.exe & wuauser.exe, Miner:

  • Msiexev.exe and wuauser.exe processes running in Task Manager.
  • Windows minimize and maximize slowly, games run slower, and videos stutter.
  • Programs don't launch as quickly.
  • General slowness when using the computer.

How were the Adylkuzz, msiexev.exe, and wuauser.exe Miners installed on a Computer?

The Adylkuzz, msiexev.exe, and wuauser.exe Miners are installed on a computer through the alleged NSA EnternalBlue exploit. This exploit allows an attacker to remotely gain access to a computer through a vulnerability in SMBv1. Once they gain access, a backdoor called DoublePulsar is installed on the computer, which is then used to download and install the Miners on the computer.

An update for the EternalBlue vulnerability was released in March 2017 and everyone should install it to make sure they are protected. Microsoft has also released security updates for unsupported versions of Windows that resolve this vulnerability. More information about this vulnerability and the related security updates can be found in the Microsoft Releases Patch for Older Windows Versions to Protect Against Wana Decrypt0r article.

As you can see, the Adylkuzz Miner is a program that steals your computer's resources and your electricity and profits from it. In order to make a computer operate normally again and protect the computer's hardware, you should use the guide below to remove this Trojan for free.

Adylkuzz, msiexev.exe, & wuauser.exe Miner Removal Options

Self Help Guide

This guide contains advanced information, but has been written in such a way so that anyone can follow it. Please ensure your data is backed up before proceeding.

If you are uncomfortable making changes to your computer or following these steps, do not worry! Instead you can get free one-on-one help by asking in the forums.

To remove Adylkuzz, msiexev.exe, & wuauser.exe Miner, follow these steps:

1

This removal guide may appear overwhelming due to the amount of the steps and numerous programs that will be used. It was only written this way to provide clear, detailed, and easy to understand instructions that anyone can use to remove this infection for free. Before using this guide, we suggest that you read it once and download all necessary tools to your desktop. After doing so, please print this page as you may need to close your browser window or reboot your computer.

2

To terminate any programs that may interfere with the removal process we must first download the Rkill program. Rkill will search your computer for active malware infections and attempt to terminate them so that they wont interfere with the removal process. To do this, please download RKill to your desktop from the following link.

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Rkill

When at the download page, click on the Download Now button labeled iExplore.exe. When you are prompted where to save it, please save it on your desktop.

3

Once it is downloaded, double-click on the iExplore.exe icon in order to automatically attempt to stop any processes associated with Adylkuzz, msiexev.exe, & wuauser.exe Miner and other malware. Please be patient while the program looks for various malware programs and ends them. When it has finished, the black window will automatically close and a log file will open. Please review the log file and then close so you can continue with the next step. If you have problems running RKill, you can download the other renamed versions of RKill from the rkill download page. All of the files are renamed copies of RKill, which you can try instead. Please note that the download page will open in a new browser window or tab.

Do not reboot your computer after running RKill as the malware programs will start again.

4

At this point you should download Malwarebytes Anti-Malware, or MBAM, to scan your computer for any infections, adware, or potentially unwanted programs that may be present. Please download Malwarebytes from the following location and save it to your desktop:

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Malwarebytes Anti-Malware
5

Once downloaded, close all programs and Windows on your computer, including this one.

6

Double-click on the icon on your desktop named mb3-setup-1878.1878-3.5.1.2522. This will start the installation of MBAM onto your computer.

7

When the installation begins, keep following the prompts in order to continue with the installation process. Do not make any changes to default settings and when the program has finished installing, make sure you leave Launch Malwarebytes Anti-Malware checked. Then click on the Finish button. If MalwareBytes prompts you to reboot, please do not do so.

8

MBAM will now start and you will be at the main screen as shown below.

Malwarebytes Anti-Malware

We now need to enable rootkit scanning to detect the largest amount of malware and unwanted programs that is possible with MalwareBytes. To do this, click on the Settings button on the left side of the screen and you will be brought to the general settings section.

Now click on the Protection tab at the top of the screen. You will now be shown the settings MalwareBytes will use when scanning your computer.

Malwarebytes Anti-Malware Detection and Protection Settings Page

At this screen, please enable the Scan for rootkits setting by clicking on the toggle switch so it turns green.

9

Now that you have enabled rootkit scanning, click on the Scan button to go to the scan screen.

Malwarebytes Anti-Malware Scan Screen

Make sure Threat Scan is selected and then click on the Start Scan button. If there is an update available for Malwarebytes it will automatically download and install it before performing the scan.

10

MBAM will now start scanning your computer for malware. This process can take quite a while, so we suggest you do something else and periodically check on the status of the scan to see when it is finished.

Malwarebytes Anti-Malware Scanning

11

When MBAM is finished scanning it will display a screen that displays any malware, adware, or potentially unwanted programs that it has detected. Please note that the items found may be different than what is shown in the image below due to the guide being updated for newer versions of MBAM.

MalwareBytes Scan Results

You should now click on the Remove Selected button to remove all the selected items. MBAM will now delete all of the files and registry keys and add them to the programs quarantine. When removing the files, MBAM may require a reboot in order to remove some of them. If it displays a message stating that it needs to reboot, please allow it to do so. Once your computer has rebooted, and you are logged in, please continue with the rest of the steps.

12

You can now exit the MBAM program.

13

Now please download AdwCleaner and save it to your desktop. AdwCleaner will scan your computer for adware programs that may have been installed on your computer without your knowledge. You can download AdwCleaner from the following URL:

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AdwCleaner
14

When AdwCleaner has finished downloading, please double-click on the AdwCleaner.exe icon that now appears on your desktop. Once you double-click on the icon the AdwCleaner program will open and you will be presented with the program's license agreement. After you read it, click on the I agree button if you wish to continue. Otherwise, click on the I disagree button to close the program. If Windows prompts you as to whether or not you wish to run AdwCleaner, please allow it to run.

If you selected to continue, you will be presented with the start screen as shown below.

AdwCleaner Start Screen

15

Now click on the Scan button in AdwCleaner. The program will now start to search for known adware programs that may be installed on your computer. When it has finished it will display all of the items it has found in Results section of the screen above. Please look through the results and try to determine if the programs that are listed contain ones that you do not want installed. If you find programs that you need to keep, then uncheck the entries associated with them.

For many people, the contents of the Results section may appear confusing. Unless you see a program name that you know should not be removed,please continue with the next step.

16

To remove the adware programs that were detected in the previous step, please click on the Clean button on the AdwCleaner screen. AdwCleaner will now prompt you to save any open files or data as the program will need to close any open programs before it starts to clean.

Please save your work and then click on the OK button. AdwCleaner will now delete all detected adware from your computer. When it is done it will display an alert that explains what PUPs (Potentially Unwanted Programs) and Adware are. Please read through this information and then press the OK button. You will now be presented with an alert that states AdwCleaner needs to reboot your computer.

AdwCleaner Reboot Prompt

Please click on the OK button to let AdwCleaner reboot your computer.

17

When your computer reboots and you are logged in, AdwCleaner will automatically open a log file that contains the files, registry keys, and programs that were removed from your computer.

AdwCleaner Log

Please review this log file and then close the Notepad Window.

18

Now you should download HitmanPro from the following location and save it to your desktop:

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HitmanPro

When you visit the above page, please download the version that corresponds to the bit-type of the Windows version you are using.

19

Once downloaded, double-click on the file named HitmanPro.exe (for 32-bit versions of Windows) or HitmanPro_x64.exe (for 64-bit versions of Windows). When the program starts you will be presented with the start screen as shown below.

HitmanPro Start Screen

Now click on the Next button to continue with the scan process.

20

You will now be at the HitmanPro setup screen. If you would like to install the 30 day trial for HitmanPro, select the Yes, create a copy of HitmanPro so I can regularly scan this computer (recommended) option. Otherwise, if you just want to scan the computer this one time, please select the No, I only want to perform a one-time scan to check this computer option.

Kickstart Setup Options

Once you have selected one of the options, please click on the Next button.

21

HitmanPro will now begin to scan your computer for infections, adware, and potentially unwanted programs. When it has finished it will display a list of all the items that Hitman has found as shown in the image below. Please note that the items found may be different than what is shown in the image.

MalwareBytes Scan Results

You should now click on the Next button to have HitmanPro remove the detected items. When it is done you will be shown a Removal Results screen that shows the status of the various programs that were removed. At this screen you should click on the Next button and then if prompted you should click on the Reboot button. If HitmanPro does not prompt you to reboot, please just click on the Close button.

Once your computer has has restarted or you pressed the Close button, you should now be at your Windows desktop.

22

As many malware and unwanted programs are installed through vulnerabilities found in out-dated and insecure programs, it is strongly suggested that you use Secunia PSI to scan for vulnerable programs on your computer. A tutorial on how to use Secunia PSI to scan for vulnerable programs can be found here:

How to detect vulnerable and out-dated programs using Secunia Personal Software Inspector

Your computer should now be free of the Adylkuzz, msiexev.exe, & wuauser.exe Miner program. If your current security solution allowed this program on your computer, you may want to consider purchasing the full-featured version of Malwarebytes Anti-Malware to protect against these types of threats in the future.

If you are still having problems with your computer after completing these instructions, then please follow the steps outlined in the topic linked below:

Preparation Guide For Use Before Using Malware Removal Tools and Requesting Help

Are Your Protected?

While Malwarebytes Anti-Malware & HitmanPro will scan and clean a computer for free, the free versions do not offer real-time protection. If you want to be fully protected at all times then it is recommended that you purchase a premium version.

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Malwarebytes Anti-Malware

Purchase the full-featured version of Malwarebytes Anti-Malware, which includes real-time protection, scheduled scanning, and website filtering, to protect yourself against these types of threats in the future!


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HitmanPro

Purchase the full-featured version of HitmanPro, which includes discover viruses, trojans, rootkits, spyware and other malware on up-to-date and fully protected computers using cloud protection and behavioral detections, to protect yourself against these types of threats in the future!

Disclaimer: While we do earn a commission from the sale of the above products, rest assured we only recommend them due to their effectiveness.

View Associated Adylkuzz, msiexev.exe, & wuauser.exe Miner Files

C:\Windows\Prefetch\wuauser.exe C:\Windows\Fonts\wuauser.exe C:\Windows\security\msiexev.exe

This is a self-help guide. Use at your own risk.

BleepingComputer.com can not be held responsible for problems that may occur by using this information. If you would like help with any of these fixes, you can ask for malware removal assistance in our Virus,Trojan,Spyware, and Malware Removal Logs forum.

If you have any questions about this self-help guide then please post those questions in our Am I infected? What do I do? and someone will help you.

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