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.CYRON File Virus (CYRON INSTALLED) – Remove + Restore Files

This article is created to help you remove Cyron ransomware virus from your computer and restore files encrypted with the .CYRON file extension added to them.

The end of August has seen the activation of multiple new ransomware variants. One of those is called Cyron and this virus aims to encrypt the files on the infected computers by it with AES algorithm and then demand from victims to pay 50 euros via PaySafeCard as a ransom to get back the encrypted files. If you have become a victim of this ransomware virus and your files have the .CYRON file extension appended to them, we strongly advise you to focus on removing it and restoring your files. Further information you can find in this article.

Threat Summary

Type Ransomware, Cryptovirus
Short Description Aims to render your important files useless and get you to pay a ransom of 50 euros to get them to work again.
Symptoms Files are encrypted with the added .CYRON file extension. A lockscreen, called CYRON INSTALLED appears on the desktop.
Distribution Method Spam Emails, Email Attachments, Executable files
Detection Tool See If Your System Has Been Affected by malware


Malware Removal Tool

User Experience Join Our Forum to Discuss CYRON.
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.

Cyron Ransomware – Distribution Methods

Cyron is a typical ransomware infection which uses an infection file to spread. Usually, such files are loaders, droppers, Trojans or simply malicious codes embedded as macros on Microsoft Office documents. But the ransomware may also exist as a JavaScript code embedded in malicious web links, even though it is less likely, because such links become no longer operational, once they are flagged by antivirus companies as malicious.

The most likely method by which your computer could have become infected with this ransom virus is via e-mail spam distributing either malicious web links or malicious files like the example images shown below:

After the victim opens the malicious attachment or clicks on the URL, a file may be automatically downloaded on his computer. These files usually pretend to be documents of importance, like receipts, invoices or other of such nature. Once the victim opens those files, infection is immediate.

Other methods by which cyber-crooks can slither Cyron ransomware on your computer are often to use a fake installer of software, fake game cracks, patches or another type of fraudulent programs, which the victim may download by searching for them on suspicious websites.


Once an infection with the .CYRON file virus takes place, the malware may take advantage of unsecured ports on your computer and via them, establish a hidden connection to download it’s payload files, used for the encryption and ransom message. The payload files are usually located under different names in the following Windows directories:

As soon as Cyron has downloaded the payload, it may execute a batch file, that may not only shut down secure Windows processes but may also delete the Windows Shadow Volume Copies on your computer. This is achieved if Cyron obtains the privileges to execute the following command as an administrator on your computer:

→ vssadmin.exe delete shadows /all /quiet & bcdedit.exe /set {default} recoveryenabled no & bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures

When this is done, Cyron ransomware may also conduct various other activities, such as create registry entries in multiple different Windows registry keys. The most often targeted Windows registry sub-keys are the Run and RunOnce keys, responsible for running files automatically when you turn on your PC. They have the following locations:


Besides encrypting the files, other activities of CYRON ransomware are to drop its lock screen software, which aims to notify you of its presence on your computer via the following message:

Text from image:

We have to lock your Computer in this regard until the Police visited you.
We detected Children Pornsites in your Browser History
You don’t have a Key already?
No Problem you can buy it via E-Mail
Enter Key to unlock your Computer and get your Deleted Files back:
Just write an E-Mail to ProjectCyRoN@candymail.de
After you send us a PaySafeCard with 50€ and your Computerlnformations that we know what target we have to send the Key
We the government’s July 31 order directing internet Service Providers (ISPs) to block 857 porn sites came after Additional Solictor General Pinky Anand conveyed to the Department of Electronics and Information Technology (DeitY) the Supreme Court’s observation
that “appropriate steps” were needed against pornographic sites, especially those featuring child pornography. So now we developed CyRoN that doing our work a lot easier, for example we detected 349 pedophiles in 2 weeks.

Pretending it has caught you with child porn, this nasty virus asks you to pay a “fee”to redeem yourself. Nasty business, indeed.

CYRON Ransomware’s Encryption

The encryption process of CYRON ransomware is conducted by firstly scanning for your important files. To do this, CYRON may have a pre-configured list of file types to look for based on their extensions. The extension list includes the most often used files in Windows, among which are the following:


If CYRON detects some of those files, the ransomware virus immediately starts encrypting them, while skipping important Windows system files, so that you can still use your computer after encryption. The encryption process is conducted by altering segments or blocks of data from the original file structure with code from the AES encryption algorithm. These blocks of data are replaced with the cipher and this results in the files looking like the image below:

Remove CYRON INSTALLED and Restore .CYRON Encrypted Files

There are several options you can choose from if you have been infected by this virus. One is to pay the ransom, but this is highly inadvisable, because you may not get them back and you support criminal activity too. So, the other option is to remove CYRON ransomware after backing up your encrypted files to recover them later on without having to pay the ransom. For the removal of this virus, we recommend that you follow the instructions below. Even though manual removal is a good idea, it may take some time and you need to have experience in malware removal. This is why, to remove all objects that have been created by CYRON ransomware on your computer, experts often advise victims to use a ransomware-specific removal software. Such will make sure all the objects of the .CYRON file virus are detected and deleted safely and will protect your computer in real-time as well.

To try and recover files that have been encrypted by CYRON, you can either back them up and wait for researchers to develop a decryptor, which if out, we will link in this article. And your other option is to try out our alternative methods in step “2. Restore files encrypted by CYRON” below. They are not 100% effective, but they may help you recover at least some of your files without paying the ransom. Furthermore, be advised that if you are going to try them out, do not use your original encrypted files and create copies instead, just for safety precautions, because encrypted files can be damaged indefinitely quite easily.

Ventsislav Krastev

Ventsislav is a cybersecurity expert at SensorsTechForum since 2015. He has been researching, covering, helping victims with the latest malware infections plus testing and reviewing software and the newest tech developments. Having graduated Marketing as well, Ventsislav also has passion for learning new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management, Network Administration and Computer Administration of System Applications, he found his true calling within the cybersecrurity industry and is a strong believer in the education of every user towards online safety and security.

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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 CYRON Research

The content we publish on SensorsTechForum.com, this CYRON 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 CYRON 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 CYRON from Windows.

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


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 CYRON 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 CYRON 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 CYRON 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 CYRON 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 CYRON.

Ransomware infections and CYRON 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 CYRON from Mac OS X.

Step 1: Uninstall CYRON 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 CYRON:

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 CYRON. 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 CYRON. 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 CYRON 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 CYRON. 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 CYRON:


SpyHunter for Mac

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

Ransomware infections and CYRON 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.


What is CYRON ransomware and how does it work?

CYRON 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 CYRON ransomware infect my computer?

Via several ways.CYRON 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 CYRON 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 .CYRON files?

You can't. At this point the .CYRON 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 .CYRON files successfully, then do not despair, because this virus is still new.

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

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

Also, keep in mind that viruses like CYRON 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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