Remove Jdyi ransomware (Virus Removal Guide) - Decryption Methods Included

Jdyi virus Removal Guide

What is Jdyi ransomware?

Jdyi ransomware is data-locking computer infection that is engineering having one goal in mind – money extortion

Jdyi ransomwareJdyi ransomware is the threat that triggers system function changes and makes claims about the alleged decryption tool. Jdyi ransomware is a malicious program designed to encrypt all personal data on the computer and then demand ransom for its return. Once inside the system, it encrypts all personal pictures, videos, documents, archives, and other files by using an RSA encryption algorithm,[1], which also appends a .jdyi extension in the process. Victims are required to pay up for the unique decryption key, which is in possession of cybercriminals behind the ransomware. This is the 261 on the list of Djvu ransomware versions, so paying is not the recommended option. You should stay away from this threat and try to eliminate it as soon as possible.

Once the encryption is complete, Jdyi ransomware virus drops a ransom note _readme.txt . This file placed in various folders, contains instructions from cybercriminals. The note explains to victims what happened and claims that the only method to return them is by paying a ransom for a decryption tool. For negotiation purposes, crooks also provide emails (, You shouldn't even consider contacting them because all those claims are not true, in most cases, victims cannot get their files restored without proper backups or official decryption tools. However, at this point, Djvu/STOP ransomware family is not decryptable since the online IDs, and powerful encoding techniques got employed back in august of 2019.

Name Jdyi file virus
Malware family Djvu ransomware
Extension Threat appends .jdyi extension to encrypted files
Ransom note _readme.txt
Distribution Malicious files get distributed around via spam email attachments, pirated software can also include payload of such ransomware
File recovery If no proper file backups are available, recovering data is almost impossible. You can try to restore media files with a particular tool or rely on Emsisoft's decryption method. Other alternate methods listed below
Malware removal Perform a full system scan with powerful security software to remove Jdyi ransomware
System fix Malware can seriously tamper with Windows systems. Changes in system folders and functions create errors and corruption of proper work. To remediate the OS, try scanning it with the ReimageIntego tool

This malware encrypts all the important files on a Windows computer and restricts access to them. In the ransom note, cyber criminals explain that the only way to recover data is by paying ransom in Bitcoin. The amount Jdyi ransomware demands and the initial ransom message, text file haven't got changed or altered in any way for a while.

Criminals try to create legitimacy or fake the trust between them and the victim, so a 50% discount is offered in the first 72hours. However, if you think that paying $490 is less dangerous than transferring $980 in Bitcoin, you should think twice. There are fewer than a few chances to get the decryption tool. In more cases, victims receive additional malware or get extorted for bigger sums.

Jdyi ransomware ransom note delivers the following message:


Don’t worry, you can return all your files!
All your files like photos, databases, documents and other important are encrypted with strongest encryption and unique key.
The only method of recovering files is to purchase decrypt tool and unique key for you.
This software will decrypt all your encrypted files.
What guarantees you have?
You can send one of your encrypted file from your PC and we decrypt it for free.
But we can decrypt only 1 file for free. File must not contain valuable information.
You can get and look video overview decrypt tool:
Price of private key and decrypt software is $980.
Discount 50% available if you contact us first 72 hours, that’s price for you is $490.
Please note that you’ll never restore your data without payment.
Check your e-mail “Spam” or “Junk” folder if you don’t get answer more than 6 hours.

To get this software you need write on our e-mail:

Reserve e-mail address to contact us:

Your personal ID

.Jdyi virus files require a unique decryption key to unlock them, experts[2] recommend not paying the ransom since payment transfers often result in financial losses. The best way to restore affected files is to recover them using proper copies from data backups or external drives.

Note that this can only help when the threat is removed already. So rely on SpyHunter 5Combo Cleaner or Malwarebytes tools, anti-malware programs that can find the threat, and properly remove Jdyi ransomware from the machine without causing additional issues with the security or performance. Manual virus termination is neither easy nor possible because you cannot find all the files associated with this infection yourself.

Jdyi ransomware virusJdyi ransomware - a threat that creates issues with the system once it manages to infiltrate the computer.

Once inside, Jdyi ransomware locks up all documents, archives, videos, music, and other files, but it can directly affect system files. Then ransomware can control what programs to disable, which files to delete or corrupt. These alterations affect the persistence of the cryptovirus and interfere with termination. For such instances, you need tools like ReimageIntego that can indicate, check, or even fix such file corruption issues for you.

This virus derives from a well-known family, which was first spotted in 2016 at least. Since then criminals behind the malware released multiple variants, including .efji, .iiss, .mmpa. Jdyi ransomware is pretty much identical to any version released this year, since the group spreads new variant each week.

Possible ways to recover after Jdyi virus attack

Jdyi ransomware removal is the procedure that is most important in an instance like this. You cannot recover files or place backups, use decryption tools on the machine that is still infected with the ransomware. You might suffer permanent loss of money if you pay or get data corrupted/ encrypted again when the virus is still active.

Online IDs that Jdyi ransomware use means that each victim gets a unique identification key that is needed for the file recovery later on. However, it is less likely to receive a decryption tool from criminals, even if you pay the ransom. Criminals are not worthy of your trust. Waiting for the official decryption tool is not an option either because it takes a long time to develop such an application.

You need to get rid of the virus first. Then you must restore functions and system files that possibly get altered or corrupted by the Jdyi file virus itself. When you double-check with anti-malware tools and can be sure that the system is virus-free, you can move on further and rely on your data backups, files from the cloud, or external storage and replace affected pieces.

Jdyi file virusJdyi ransomware - malware that marks data with .jdyi appendix when those files become locked.

Ransomware is dangerous: do not get infected in the first place

Djvu virus is extremely prevalent: according to Emsisoft security researchers, this strain accounts for more than 70% of all ransomware infections that were submitted by the infected users.[3] This statistic is extremely alarming, as it means that malware is extremely successful in infecting victims worldwide.

So, how did criminals manage to reach sight success, while others did not? Of course, it comes down to the successful distribution methods that the attackers are using – malicious installers placed all over the web. However, users are not aware that they are downloading malware, as the payload is disguised as a program crack, loader, or a similar tool. These are typically used to bypass the licensing process of well-known applications, such as, for example, Photoshop.

Since some of the apps can be pricey, many choose to download pirated versions instead and get them for free. Without a doubt, users who have their security apps installed would be information about the imminent danger. However, since software cracks are most commonly flagged by security solutions, users choose to ignore these warnings and sill open the malicious file.

Therefore, it is vital that you stay away from insecure third-party sites that host illegal software installers and cracks, as it is one of the first methods to get your computer infected with file-encrypting malware. As soon as you execute the file, Jdyi virus files will be out of reach, possibly forever. Besides, keep in mind that previous versions of malware were commonly distributed with other infections, such as AZORult banking Trojan.

Jdyi ransomware encrypted filesAfter Jdyi virus finishes the locking process, restoring files becomes extremely difficult

Delete the ransomware infection before attempting to recover .Jdyi files

Since Jdyi ransomware virus can spread around from pirated software pages, during the download of illegal software activators, and so on, you might have more intruders on the machine than this cryptovirus alone. This is why we recommend getting anti-malware tools and running the program fully.

When you rely on anti-malware tools like SpyHunter 5Combo Cleaner or Malwarebytes and remove Jdyi ransomware, you can see the list of detection names that include this threat and other possibly related programs or infections. There are trojans that this threat can be used to spread with or additional malware that ends up added after encryption.[4]

Jdyi ransomware removal is not the same as file recovery, so rely on proper tools that can restore affected pieces for you or system features that offer to restore data after such infections. As for PC repair and system recovery, try applications like ReimageIntego, so any alterations and corrupted data, virus damage can get fixed.

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Compatible with Microsoft Windows Compatible with macOS
What to do if failed?
If you failed to remove virus damage using Reimage Intego, submit a question to our support team and provide as much details as possible.
Reimage Intego has a free limited scanner. Reimage Intego offers more through scan when you purchase its full version. When free scanner detects issues, you can fix them using free manual repairs or you can decide to purchase the full version in order to fix them automatically.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Reimage, try running SpyHunter 5.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Intego, try running Combo Cleaner.

Getting rid of Jdyi virus. Follow these steps

Manual removal using Safe Mode

Reboot the machine in Safe Mode with Networking, so you can run the AV tool and remove Jdyi ransomware

Important! →
Manual removal guide might be too complicated for regular computer users. It requires advanced IT knowledge to be performed correctly (if vital system files are removed or damaged, it might result in full Windows compromise), and it also might take hours to complete. Therefore, we highly advise using the automatic method provided above instead.

Step 1. Access Safe Mode with Networking

Manual malware removal should be best performed in the Safe Mode environment. 

Windows 7 / Vista / XP
  1. Click Start > Shutdown > Restart > OK.
  2. When your computer becomes active, start pressing F8 button (if that does not work, try F2, F12, Del, etc. – it all depends on your motherboard model) multiple times until you see the Advanced Boot Options window.
  3. Select Safe Mode with Networking from the list. Windows 7/XP
Windows 10 / Windows 8
  1. Right-click on Start button and select Settings.
  2. Scroll down to pick Update & Security.
    Update and security
  3. On the left side of the window, pick Recovery.
  4. Now scroll down to find Advanced Startup section.
  5. Click Restart now.
  6. Select Troubleshoot. Choose an option
  7. Go to Advanced options. Advanced options
  8. Select Startup Settings. Startup settings
  9. Press Restart.
  10. Now press 5 or click 5) Enable Safe Mode with Networking. Enable safe mode

Step 2. Shut down suspicious processes

Windows Task Manager is a useful tool that shows all the processes running in the background. If malware is running a process, you need to shut it down:

  1. Press Ctrl + Shift + Esc on your keyboard to open Windows Task Manager.
  2. Click on More details.
    Open task manager
  3. Scroll down to Background processes section, and look for anything suspicious.
  4. Right-click and select Open file location.
    Open file location
  5. Go back to the process, right-click and pick End Task.
    End task
  6. Delete the contents of the malicious folder.

Step 3. Check program Startup

  1. Press Ctrl + Shift + Esc on your keyboard to open Windows Task Manager.
  2. Go to Startup tab.
  3. Right-click on the suspicious program and pick Disable.

Step 4. Delete virus files

Malware-related files can be found in various places within your computer. Here are instructions that could help you find them:

  1. Type in Disk Cleanup in Windows search and press Enter.
    Disk cleanup
  2. Select the drive you want to clean (C: is your main drive by default and is likely to be the one that has malicious files in).
  3. Scroll through the Files to delete list and select the following:

    Temporary Internet Files
    Recycle Bin
    Temporary files

  4. Pick Clean up system files.
    Delete temp files
  5. You can also look for other malicious files hidden in the following folders (type these entries in Windows Search and press Enter):


After you are finished, reboot the PC in normal mode.

Remove Jdyi using System Restore

Rely on the System Restore feature and clear any intruders from the computer

  • Step 1: Reboot your computer to Safe Mode with Command Prompt
    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of Jdyi. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with ReimageIntego and make sure that Jdyi removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove Jdyi from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by security experts.

If your files are encrypted by Jdyi, you can use several methods to restore them:

Data Recovery Pro is the program that can help with file restore after the Jdyi ransomware attack or accidental file deletion

You can rely on Data Recovery Pro when you do not have proper file backups

  • Download Data Recovery Pro;
  • Follow the steps of Data Recovery Setup and install the program on your computer;
  • Launch it and scan your computer for files encrypted by Jdyi ransomware;
  • Restore them.

Windows Previous Versions can recover individual files

WhenSystsem Restore gets enabled, you ensure that Windows Previous Versions feature can restore files affected by Jdyi ransomware

  • Find an encrypted file you need to restore and right-click on it;
  • Select “Properties” and go to “Previous versions” tab;
  • Here, check each of available copies of the file in “Folder versions”. You should select the version you want to recover and click “Restore”.

ShadowExplorer – a method for data recovery after Jdyi ransomware virus

If you are sure that Shadow Volume Copies got deleted, you cannot use this feature. Otherwise, shadowExplorer restores encrypted files for you

  • Download Shadow Explorer (;
  • Follow a Shadow Explorer Setup Wizard and install this application on your computer;
  • Launch the program and go through the drop down menu on the top left corner to select the disk of your encrypted data. Check what folders are there;
  • Right-click on the folder you want to restore and select “Export”. You can also select where you want it to be stored.

Try the decryption tools for Djvu family

You might have an option to use Emsisoft's decrypter for the Jdyi files

Keep in mind that Jdyi file virus might not be decryptable even for those who have their data encrypted with an offline ID for quite some time. One of the users who got encrypted with this variant needs to retrieve the offline key from the attackers and then share it with Emsisoft security researchers. Thus, if the tool does not work for you yet, you should wait some time and try it later.

Here's how to use it:

  1. Download Emsisoft's decryptor for Djvu [download link].
  2. Click on the decrypt_STOPDjvu.exe file at the bottom-left of your browser tab.Download Emsisoft Djvu decryptor
  3. Agree to License Terms.
    Agree to terms
  4. Click OK when Disclaimer window shows up.
  5. The Decryptor should automatically populate the encrypted file folders, although you can add them manually as well by pressing Add folder.
    Upload files to decrypt
  6. The tool will run for sometime and report whether your files can be decrypted.

From here, there are three outcomes that are available:

  1. Decrypted!” will be shown under files that were decrytped successfully – they are now usable again.
    Files decrypted
  2. Error: Unable to decrypt file with ID:” – this means that the offline keys for this version of Djvu has not been recovered yet (should try later).
    Unable to decrypt with this ID
  3. This ID appears to be an online ID, decryption is impossible” – as description explains, decryption is not possible with the decryptor.Online ID - decryption ompossible

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Jdyi and other ransomwares, use a reputable anti-spyware, such as ReimageIntego, SpyHunter 5Combo Cleaner or Malwarebytes

How to prevent from getting ransomware

Stream videos without limitations, no matter where you are

There are multiple parties that could find out almost anything about you by checking your online activity. While this is highly unlikely, advertisers and tech companies are constantly tracking you online. The first step to privacy should be a secure browser that focuses on tracker reduction to a minimum.

Even if you employ a secure browser, you will not be able to access websites that are restricted due to local government laws or other reasons. In other words, you may not be able to stream Disney+ or US-based Netflix in some countries. To bypass these restrictions, you can employ a powerful Private Internet Access VPN, which provides dedicated servers for torrenting and streaming, not slowing you down in the process.

Data backups are important – recover your lost files

Ransomware is one of the biggest threats to personal data. Once it is executed on a machine, it launches a sophisticated encryption algorithm that locks all your files, although it does not destroy them. The most common misconception is that anti-malware software can return files to their previous states. This is not true, however, and data remains locked after the malicious payload is deleted.

While regular data backups are the only secure method to recover your files after a ransomware attack, tools such as Data Recovery Pro can also be effective and restore at least some of your lost data.

About the author
Julie Splinters
Julie Splinters - Malware removal specialist

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