Remove Matrix Virus and Restore .KOK8 Files
THREAT REMOVAL

Remove Matrix Virus and Restore .KOK8 Files

Matrix Virus image ransomware note .KOK8 extension

The newest Matrix virus sample has been uncovered in a new attack campaign encrypting target user data with the .KOK8 extension. The continued attacks showcase that interest in this ransomware continues. Our article provides an overview of the virus operations and it also may be helpful in attempting to remove the virus.

Threat Summary

NameMatrix virus
TypeRansomware, Cryptovirus
Short DescriptionThe ransomware encrypts sensitive information on your computer system with the .KOK8 extension and demands a ransom to be paid to allegedly recover them.
SymptomsThe ransomware will encrypt your files with a strong encryption algorithm.
Distribution MethodSpam Emails, Email Attachments
Detection Tool See If Your System Has Been Affected by Matrix virus

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User ExperienceJoin Our Forum to Discuss Matrix virus.
Data Recovery ToolWindows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive.

Matrix Virus – Distribution Ways

A new sample of the Matrix ransomware family has been spotted which encrypts target files with the .KOK8 extension. We presume that like previous Matrix ransomware strains it also makes use of the typical distribution tactics.

The ongoing attack campaigns make use of SPAM email campaigns. They usually contain malicious social engineering elements that coerce the victim users into interacting with virus code. Executable files can be directly attached to the email messages or linked in their body contents.

The criminals can also construct fake download portals that utilize the same elements as legitimate vendor download pages and common portals. To redirect to them the hackers can utilize various scripts — redirects, ads, pop-ups, banners and in-line hyperlinks. To facilitate a higher number of infected hosts the associated scripts can be placed on community forums, chat rooms and etc.

All of them can be used to deliver infected payloads, there are two main types that are popular with most ransomware campaigns:

  • Macro-Infected Documents — The hackers can embed virus code that can help deliver the Matrix virus in documents. All popular types are possible sources of infections: presentations, databases, text documents and spreadsheets. Once they are opened by the targets a notification message will be spawned asking them to enable the built-in content. If this is done the virus infection will follow.
  • Software Installers — A similar approach is the inclusion of the malware code into installers of applications, updates and extensions. They are made by taking the legitimate files from the official vendor sites and modifying them with the payload delivery code.

The dangerous files can also be distributed on file sharing networks such as BitTorrent. They are often used to access illegal and pirate content.

Advanced cases can integrate the threat in browser hijackers (redirects) that are made for the most popular web browsers. They represent dangerous extensions that pose as useful additions and are spread on the official repositories and various third-party sites. Their typical behavior is to modify the settings of the affected web browsers and redirect the users to a hacker-specified address. After this is done the virus infection will follow.

Matrix Virus – In-Depth Analysis

The newest release of the Matrix virus is accompanied by a new .KOK8 extension. The security analysis reveals that the new strain behaves much like previous versions. The virus contains a modular engine which can be fine tuned according to the attack campaign. Custom configuration instructions can be crafted for various machines and conditions.

The infection campaigns can begin with a data harvesting module. It is programmed to collect information from the infected hosts using predefined commands. The first type of data that is collected can expose the victim’s identity by looking for certain strings. Examples include their name, address, phone number, interest, location and any stored account credentials. The other group of information is the collection of data that can help grow the ongoing attacks. The metrics includes certain values such as the installed hardware components, user-set settings and operating system conditions.

Follow-up operations using the collected information is the stealth installation of the Matrix ransomware. This means that it will scan the contaminated system for applications and services that can interfere with the correct malware execution. This includes anti-virus products, sandbox environments and virtual machine hosts.

Following the threat’s deployment without interruption the Matrix virus will continue with various system changes. The list of possible actions includes the following:

  • Windows Registry Changes — The virus engine has the ability to access the Windows Registry — existing strings belonging to the operating system or user-installed applications or create new ones for itself. The impact of the modifications can lead to severe performance issues or the inability to access certain functions.
  • Persistent Installation — The malware threat can be installed in a way which automatically will start once the computer is powered on. It can also disable access to the recovery boot menu.
  • Data Manipulation — The associated engine can remove System Restore points and Shadow Volume Copies information which can make data recovery difficult. Refer to our instructions for more information on the matter.
  • Trojan Horse Delivery — This threat can install a Trojan virus which establishes a secure connection with a hacker-controlled server. It can be used by the operators to take over control of their machines at any given time, acquire any user file, spy on the users and deploy other viruses.

Matrix Virus — Encryption

Like previous Matrix ransomware family samples this particular threat uses a built-in list of target file types. They are processed with a strong cipher and made inaccessible by the users. An example list can include any of the following:

  • Archives
  • Backups
  • Databases
  • Images
  • Videos
  • Music

The affected files are renamed with the .KOK8 extension. This is the final extension as the data is renamed according to the following template: “[KOK8@protonmail.com].[random]-[random].KOK8”. A standard ransomware template is crafted in a file called #KOK8_README#.rtf.

Remove Matrix Virus and Restore Encrypted Files

If your computer system got infected with the Matrix Virus, you should have a bit of experience in removing malware. You should get rid of this ransomware as quickly as possible before it can have the chance to spread further and infect other computers. You should remove the ransomware and follow the step-by-step instructions guide provided below.

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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

How to Remove Matrix virus from Windows.


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

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 Matrix virus 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 Matrix virus 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 Matrix virus 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 Matrix virus 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.

Step 5 (Optional): Try to Restore Files Encrypted by Matrix virus.

Ransomware infections and Matrix virus aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.

1. Download the reccomended Data Recovery software by clicking on the link underneath:

If the above link does not work for you and your region, try the other two links below, that lead to the same product:

and

2. On the download page, click on the "Download" button:

3. Click on "Save File" button:

4. Accept all agreements and click "Next":

5. After all the "Next" steps, click on "Install" and then wait for the installation to complete:

6. Run the software. Click on the location to scan for missing or deleted files and click on "Scan":

7. Wait for the scan to complete, it may take some time. Be advised that this scan is not 100% guaranteed to recover all files, but it does have some chance to get your data back:


Windows Mac OS X

Get rid of Matrix virus from Mac OS X.


Step 1: Uninstall Matrix virus 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 Matrix virus:

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 Matrix virus. 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 Matrix virus. 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 Matrix virus 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 Matrix virus. 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 Matrix virus files from your Mac

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


Step 3 (Optional): Try to Restore Files Encrypted by Matrix virus on your Mac.

Ransomware for Mac Matrix virus aims to encode all your files using an encryption algorithm which may be very difficult to decode, unless you pay money. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files, but only in some cases. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.

1. Download the recommended Data Recovery Mac app by clicking on the link underneath:


Matrix virus FAQ

What is Matrix virus ransomware and how does it work?

Matrix virus is a ransomware infection - the malicious software that enters your computer silently and blocks either access to the computer itself or encrypt your files. Many ransomware viruses use sophisticated encryption algorithm how to make your files inaccessible. The goal of ransomware infections is to demand that you pay a ransom payment to get access to your files back.

How does Matrix virus ransomware infect my computer?

Matrix virus Ransomware infects computers by being sent via phishing e-mails, containing virus attachment. This attachment is usually masked as an important document, like an invoice, bank document or even a plane ticket and it looks very convincing to users. After you download and execute this attachment, a drive-by download occurs and your computer is infected with the ransomware virus.

Another way, you may become a victim of Matrix virus is if you download a fake installer, crack or patch from a low reputation website or if you click on a virus link. Many users report getting a ransomware infection by downloading torrents.

How to open .Matrix virus files?

You can't. At this point the .Matrix virus files are encrypted. You can only open them once they are decrypted.

Decryptor did not decrypt my data. What now?

If a decryptor did not decrypt your .Matrix virus files successfully, then do not despair, because this virus is still new.

One way to restore files, encrypted by Matrix virus ransomware is to use a decryptor for it. But since it's a new virus, advised that the decryption keys for it may not be out yet and available to the public. We will update this article and keep you posted as soon as this decryptor is released.

How Do I restore ".Matrix virus" files (Other Methods)?

We have suggested several file recovery methods that could work if you want to restore .Matrix virus files. These methods are in no way 100% guarantee that you will be able to get your files back. But if you have a backup, your chances of success are much greater.

How do I get rid of Matrix virus ransomware virus?

The safest way and the most efficient one for the removal of this ransomware infection is the use a professional anti malware software. It will scan for and locate Matrix virus ransomware and then remove it without causing any additional harm to your important .Matrix virus files.

Also, keep in mind that viruses like Matrix virus ransomware also install Trojans and keyloggers that can steal your passwords and accounts. Scanning your computer with an anti-malware software will make sure that all of these virus components are removed and your computer is protected in the future.

What to Do If nothing works?

If none of the above methods seem to work for you, then try these methods:

Try to find a safe computer from where you can can login on your own line accounts like One Drive, iDrive, Google Drive and so on.

Try to contact your friends relatives and other people so that they can check if they have some of your important photos or documents just in case you sent them.

Also, check if some of the files that were encrypted it can be re downloaded from the web.

Another clever way to get back some of your files is to find another old computer, a flash drive or even a CD or a DVD where you may have saved your older documents. You might be surprised what will turn up.

You can also go to your email account to check if you can send any attachments to other people. Usually what is sent the email is saved on your account and you can re-download it. But most importantly, make sure that this is done from a safe computer and make sure to remove the virus first.

More tips you can find on our forums, where you can also asks any questions about your ransomware problem.

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