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Remove Xorist Virus – Restore .PrOtOnIs Files

Xorist Virus image ransomware note .PrOtOnIs  extension

A new Xorist virus sample has been detected using the .PrOtOnIs extension. We have detected that it is based on the source code used by previous iterations. Our article provides an overview of the virus operations and it also may be helpful in attempting to remove the virus.

Threat Summary

Name Xoris Virus
Type Ransomware, Cryptovirus
Short Description The ransomware encrypts sensitive information on your computer system with the .PrOtOnIs extension and demands a ransom to be paid to allegedly recover them.
Symptoms The ransomware will encrypt your files with a strong encryption algorithm.
Distribution Method Spam Emails, Email Attachments
Detection Tool See If Your System Has Been Affected by malware


Malware Removal Tool

User Experience Join Our Forum to Discuss Xoris Virus.
Data Recovery Tool Windows 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.

Xorist Virus – Distribution Ways

The Xorist ransomware family is well known for spreading across a variety of different methods. The recently collected Xorist virus samples indicate that computer criminals continue to develop new threats that utilize the same underlying engine.

A common tactic used to spread the virus samples is the creation of phishing email campaigns. They mandate the coordination of messages that contain design elements and layouts that are hijacked from popular services and sites that most Internet users might use. Usually the Xorist virus samples are either directly attached or linked somewhere in the body contents.

The built-in links can lead to hacker-created sites that might look like legitimate vendors or download portals. In most cases it may be difficult to differentiate between the real and the fake pages as fake credentials and similar sounding domain names are standard. These two methods are also the most common ones used to spread infected payloads that can lead to Xorist virus infections. Two popular types are the following:

  • Documents — Xorist virus infections can be caused by interacting with dangerous scripts. The most likely place to find them are malicious documents: text documents, spreadsheets, presentations and databases. Once they are a notification message will appear asking the users to enable the built-in macros. If this is done the infection will follow.
  • Application Installers — The Xorist virus code can be made part of setup files for popular software. This is done by taking the original application installers from their original sources and embedding the virus install code into them. Popular choices include system utilities, creativity suites and productivity apps.

Both the standalone virus files and the malware payload carriers can be spread using hacker scripts that can take various forms — pop-ups, banners, redirects and in-line hyperlinks. To further increase the number of infected hosts the criminals can utilize file sharing networks such as BitTorrent. They are a popular choice among computer users as they allow the distribution of all kinds of content include pirate games, movies and software.

Advanced virus spread campaigns can employ browser hijackers. They are malicious plugins made for the most popular web browsers that are most commonly found on the associated add-on repositories. They make use of fake user reviews and developer credentials along with an elaborate description to coerce the users into installing it. Once this is done the built-in instructions will trigger a change of the default settings (home page, search engine and new tabs page) to redirect the users to a hacker-controlled page. After this is complete the virus will be downloaded and started on the victim machine.

Xorist Virus – In-Depth Analysis

Xorist virus samples feature a classic behavior pattern which is no different than the other well-known ransomware families. Having a modular framework enabels the criminals to create custom versions of Xorist and even offer the creation of tailor-made versions on the hacker underground markets. At the onset of infections we presume that the virus files will start a data harvesting component. It has several important features which require it to be started first before the other malicious actions can take place:

  • Stealth Protection — By scanning for the presence of anti-virus programs, sandbox environments and virtual machine hosts the Xorist virus engine can disable their real-time engines or altogether delete them from the system. This will prevent them from blocking the ransomware’s deployment and operations.
  • Personal Data — The virus engine can be programmed to retrieve information that can reveal the victim users identity. An example is their name, address, phone number, interests, location and any stored account credentials.
  • Campaign Metrics — The Xorist virus can harvest information that can be useful to the hackers in coordinating their attacks. The list of target information includes a report on the installed hardware components and system settings.

Once the ransomware has gained access to the system it can institute multiple malicious actions depending on the exact malicious pattern instituted by the hacker operators. A typical virus installation would begin by modifying the Windows Registry. This is done in order to cause certain user-installed applications and system services to stop functioning properly. Such modifications can also lead to severe performance issues when using the compromised system. Other system changes that have a lasting impact on the infected hosts include the installation of the Xorist virus as a persistent threat. This sets the ransomware to automatically launch once the computer is started. It will also disable access to the recovery boot menu which will make it very difficult to utilize manual removal instructions. Additional issues can be caused by the ransomware’s deletion of Shadow Volume Copies and System Restore Data. This means that effective file restore is only possible with a professional-grade solution, refer to our instructions for more information.

Advanced infections can deliver a Trojan infection which allows the criminal operators to take over control of the infected hosts. This is done by setting up an encrypted connection with a hacker-controlled server. When it is active the operators can take over control of the systems, retrieve any file and also deploy additional threats.

Xorist Virus — Encryption

When all modules have completed execution the ransomware component can be started. Like previous samples it uses a built-in list of target file type extensions. An example list may affect the following data:

  • Archives
  • Documents
  • Databases
  • Images
  • Videos
  • Music

All affected files will be renamed with the .PrOtOnIs extension. Looking up into the infections we have uncovered an alternative extension called .PrOtOnIs.VaNdElIs.

The associated ransomware note reads the following message:


I am truly sorry to inform you that all your important files are crypted.
If you want to recover your encrypted files you need to follow a few steps.
Atention! I do not offer for free the decrypt key, for that you have to pay 0.08 BITCOIN.

Step 1: Create an account on www.localbitcoins.com
Step 2: Buy 0.08 BITCOIN
Step 3: Send the amount on this BTC address: 1cyVzadAas7SA1r7YPmGP8FCUKMQYWp6w
Step 4: Contact me on this email address protonis@gmx.com with this subject: ID-RESTORE-008PROTONISPCID0381723
After this steps you will receive through email the key and a decrypt tutorial.

Here is another list where you can buy bitcoin:

The ransomware note clearly shows that it contains the unique user ID which is calculated from the hijacked data.

Remove Xorist Ransomware Virus and Restore .PrOtOnIs Files

If your computer got infected with the Xorist ransomware 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.

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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Attention! SensorsTechForum strongly recommends that all malware victims should look for assistance only by reputable sources. Many guides out there claim to offer free recovery and decryption for files encrypted by ransomware viruses. Be advised that some of them may only be after your money.

As a site that has been dedicated to providing free removal instructions for ransomware and malware since 2014, SensorsTechForum’s recommendation is to only pay attention to trustworthy sources.

How to recognize trustworthy sources:

  • Always check "About Us" web page.
  • Profile of the content creator.
  • Make sure that real people are behind the site and not fake names and profiles.
  • Verify Facebook, LinkedIn and Twitter personal profiles.


with Anti-Malware
We recommend you to download SpyHunter and run free scan to remove all virus files on your PC. This saves you hours of time and effort compared to doing the removal yourself.
SpyHunter 5 free remover allows you, subject to a 48-hour waiting period, one remediation and removal for results found. Read EULA and Privacy Policy

About the Xoris Virus Research

The content we publish on SensorsTechForum.com, this Xoris Virus how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific malware and restore your encrypted files.

How did we conduct the research on this ransomware?

Our research is based on an independent investigation. We are in contact with independent security researchers, and as such, we receive daily updates on the latest malware and ransomware definitions.

Furthermore, the research behind the Xoris Virus ransomware threat is backed with VirusTotal and the NoMoreRansom project.

To better understand the ransomware threat, please refer to the following articles which provide knowledgeable details.


1. How to Recognize Spam Emails with Ransomware
2. How Does Ransomware Encryption Work?
3. How to Decrypt Ransomware Files
4. Ransomware Getting Greedier and Bigger, Attacks Increase by 40%
5. 1 in 5 Americans Victim of Ransomware

Windows Mac OS X

How to Remove Xoris Virus from Windows.

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


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 Xoris 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 Xoris 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 Xoris 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.

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 Xoris 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.


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


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.


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

Video Guide for Automatic and Fast Removal

Step 5 (Optional): Try to Restore Files Encrypted by Xoris Virus.

Ransomware infections and Xoris 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 recommended Data Recovery software by clicking on the link underneath:

Simply click on the link and on the website menus on the top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.

Step 6: How to Restore Files Encrypted by Ransomware (Video Guide)

Windows Mac OS X

Get rid of Xoris Virus from Mac OS X.

Step 1: Uninstall Xoris Virus and remove related files and objects

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 Xoris 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 Xoris 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 Xoris 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 Xoris 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 Xoris 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

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

Click the button below below to download SpyHunter for Mac and scan for Xoris Virus:


SpyHunter for Mac

Step 3 (Optional): Try to Restore Files Encrypted by Xoris Virus.

Ransomware infections and Xoris 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 recommended Data Recovery software by clicking on the link underneath:

Simply click on the link and on the website menus on top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.

Xoris Virus FAQ

What is Xoris Virus ransomware and how does it work?

Xoris 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 Xoris Virus ransomware infect my computer?

Via several ways.Xoris 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 Xoris 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 .Xoris Virus files?

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

Decryptor did not decrypt my data. What now?

Do not panic and backup the files. If a decryptor did not decrypt your .Xoris Virus files successfully, then do not despair, because this virus is still new.

One way to restore files, encrypted by Xoris 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 ".Xoris Virus" files (Other Methods)?

Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .Xoris 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 Xoris 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 Xoris Virus ransomware and then remove it without causing any additional harm to your important .Xoris Virus files.

Also, keep in mind that viruses like Xoris 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?

There is still a lot you can do. 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.

How to Report Ransomware to Authorities?

In case your computer got infected with a ransomware infection, you can report it to the local Police departments. It can help authorities worldwide track and determine the perpetrators behind the virus that has infected your computer. Below, we have prepared a list with government websites, where you can file a report in case you are a victim of a cybercrime:

Cyber-security authorities, responsible for handling ransomware attack reports in different regions all over the world:

Reports may be responded to in different timeframes, depending on your local authorities.

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