Jdyi Ransomware - How to remove

Jdyi is a file-locking ransomware infection. It makes your files unopenable and labels them with a second extension, “.jdyi”.

It causes other problems, too: it installs adware and a data stealer, it blocks some websites, it can disable your antivirus program and hide Task Manager. Overall, Jdyi is serious malware that can cause a lot of harm.

It can be deleted, however, file recovery is a separate issue.

About Jdyi:

Threat type	Ransomware, trojan, spyware, adware.
Removing Jdyi	Find malware and remove it with antivirus tools (Spyhunter, Malwarebytes, others), restore important settings, reset passwords.
How Jdyi infects computers	Downloaded from the internet, installed together with other malware.
Data recovery options	Paying the ransom can work (but it’s expensive and the criminals may scam you), decryption (though it is very unlikely), data recovery, file repair.

How to remove Jdyi

Delete all malware

Jdyi ransomware encrypts files, breaking them. It will continue to cause problems if it is not removed. Removing Jdyi won’t fix your files, though – that’s a separate process.

In addition to Jdyi, other malware likely got installed: advertising and data-stealing malware. This malware needs to be removed, too.

Use antivirus tools, such as Spyhunter or Malwarebytes, to find and remove malicious programs. Even if you reset your computer, make sure that no malicious files were kept.

You may have to make a few fixes to your settings: fix the hosts file (instructions below), restore the Task Manager, update your antivirus program.

Protect your information

Afterward, change your passwords. It’s likely that an info-stealing malicious program came with Jdyi and it ay have stolen passwords, other form-filling information stored in web browsers, crypto wallet data, and other sensitive info. Don’t give criminals the chance to abuse it.

Make sure that you use 2-factor authentication where possible so that you’re alerted if anyone tries to make use of your login credentials.

How ransomware attacks work

Downloaded from the internet

Jdyi gets downloaded from filesharing sites and pirate sites. It gets disguised as some wanted program or file in order to get people to download it.

You can expect to find Jdyi on unreliable sites, uploaded there by an unknown person. Though, it is possible for legitimate uploaders to sell out and spread malware.

There are some things you can do:

• Avoid pirating.
• Find an online community to help you tell bad sites from good ones.
• Sca every file that you download for malware.
• Make backups of your data and save them on a separate computer, device, or in the cloud.

Jdyi deletes backups and encrypts your files. The ultimate way to stay safe from it is to have backup copies of your files. If you do, then the worst that Jdyi can do is waste a bit of your time.

Installed with other malware

Jdyi is a type of Djvu ransomware, along with Iiss, Efji, and others. Djvu is just one of many types of ransomware. It’s focused on individual users as opposed to the more famous ransomware threats that focus on large companies and institutions.

Djvu is known for distributing Azorult – a trojan that steals information and downloads adware. Some victims of Djvu ransomware have mentioned having their accounts hacked and seeing a ton of pop-up ads after the infection.

Encrypts user files

Once Jdyi is on the computer, it gets to work quickly. It encrypts user files and then changes their names by adding the “jdyi” extension.

Encryption is a process of hiding information in plain sight. Jdyi does this by scrambling file data (or parts of file data) according to an algorithm. The only way to reverse the encryption is to get the decryptor and the decryption key.

The decryptor is available to everyone. Click here to find it. But the decryption key is unique to each and every victim.

Once Jdyi encrypts all the files, it places ransom notes (called “_readme.txt”) in your folders. These notes ask for a ransom between $490 and $980 and your unique ID in exchange for the criminals sending the unique decryption key. Without the correct key, the files can’t be decrypted.

How to restore the files that Jdyi broke

There are other options besides bargaining with Jdyi’s devs (who sometimes just scam their victims). There’s no perfect solution, though.

Provided that your version of Jdyi used the offline key, which is unlikely, you may be able to get the decryption key from another victim of Jdyi. Check the above link to Jdyi’s decryptor to get more information.

If the Jdyi attack happened recently and/or you haven’t used the infected computer much since then, try using a data recovery program. These programs might be able to restore some deleted data.

Depending on what types the files you wish to recover are, you can try repairing them. When Jdyi encrypts files, it often only encrypts parts, which means that there’s still undamaged data that can be recovered. You just need to remove or replace the corrupted parts. This can be difficult and time-consuming. Here are some example links: How to recover corrupted 7z archive, File repair for STOP/DJVU.

Finally, there may be some files that you sent out as email attachments, uploaded online, shared with friends, etc. that you can download.

Important -- edit the hosts file to unblock security websites

TL DR : The hosts file is edited to block security sites Before the virus can be removed, it's necessary to fix the hosts file (the file which controls which addresses connect to which IPs). That is the reason the majority of security websites is inaccessible when infected with this particular parasite. This infection edits this file to stop certain websites, including anti-malware download sites, from being accessed from the infected computer, making browsers return the "This site can't be reached" error. Luckily, it's trivial to fix the file and remove the edits that were made to it.

Find and edit the hosts file

The hosts file can be found on C:/Windows/System32/Drivers/etc/hosts. If you don't see it, change the settings to see hidden files.

1. In the Start Menu, search for Control Panel.
2. In the Control Panel, find Appearance and Personalization.
3. Select Folder Options.
4. Open the View tab.
5. Open Advanced settings.
6. Select "Show hidden files...".
7. Select OK.

Open this file with administrator privileges.

1. Open the Start Menu and enter "notepad".
2. When Notepad shows up in the result, right-click on it.
3. In the menu, choose "Run as administrator"
4. File->Open and browse for the hosts file.

The hosts file should look like this: Delete additional lines that they connect various domain names to the wrong IP address. Save the file.

Download and run the antivirus program

After that, download antivirus programs and use them to remove the ransomware, the trojan, and other malware. Spyhunter (https://www.2-viruses.com/reviews/spyhunter/dwnld/).

Automatic Malware removal tools

How to recover Jdyi Ransomware encrypted files and remove the virus

Step 1. Restore system into last known good state using system restore

1. Reboot your computer to Safe Mode with Command Prompt:

for Windows 7 / Vista/ XP

• Start → Shutdown → Restart → OK.
• Press F8 key repeatedly until Advanced Boot Options window appears.
• Choose Safe Mode with Command Prompt.

for Windows 8 / 10

• Press Power at Windows login screen. Then press and hold Shift key and click Restart.
• Choose Troubleshoot → Advanced Options → Startup Settings and click Restart.
• When it loads, select Enable Safe Mode with Command Prompt from the list of Startup Settings.

 

2.Restore System files and settings.

• When Command Prompt mode loads, enter cd restore and press Enter.
• Then enter rstrui.exe and press Enter again.
• Click “Next” in the windows that appeared.
• Select one of the Restore Points that are available before Jdyi Ransomware has infiltrated to your system and then click “Next”.
• To start System restore click “Yes”.

 

Step 2. Complete removal of Jdyi Ransomware

After restoring your system, it is recommended to scan your computer with an anti-malware program, like Spyhunter and remove all malicious files related to Jdyi Ransomware. You can check other tools here.  

Step 3. Restore Jdyi Ransomware affected files using Shadow Volume Copies

If you do not use System Restore option on your operating system, there is a chance to use shadow copy snapshots. They store copies of your files that point of time when the system restore snapshot was created. Usually Jdyi Ransomware tries to delete all possible Shadow Volume Copies, so this methods may not work on all computers. However, it may fail to do so. Shadow Volume Copies are only available with Windows XP Service Pack 2, Windows Vista, Windows 7, and Windows 8. There are two ways to retrieve your files via Shadow Volume Copy. You can do it using native Windows Previous Versions or via Shadow Explorer. a) Native Windows Previous Versions Right-click on an encrypted file and select Properties → Previous versions tab. Now you will see all available copies of that particular file and the time when it was stored in a Shadow Volume Copy. Choose the version of the file you want to retrieve and click Copy if you want to save it to some directory of your own, or Restore if you want to replace existing, encrypted file. If you want to see the content of file first, just click Open.

b) Shadow Explorer It is a program that can be found online for free. You can download either a full or a portable version of Shadow Explorer. Open the program. On the left top corner select the drive where the file you are looking for is a stored. You will see all folders on that drive. To retrieve a whole folder, right-click on it and select “Export”. Then choose where you want it to be stored.

Step 4. Use Data Recovery programs to recover Jdyi Ransomware encrypted files

There are several data recovery programs that might recover encrypted files as well. This does not work in all cases but you can try this:

• We suggest using another PC and connect the infected hard drive as slave. It is still possible to do this on infected PC though.
• Download a data recovery program.
• Install and scan for recently deleted files.

Note: In many cases it is impossible to restore data files affected by modern ransomware. Thus I recommend using decent cloud backup software as precaution. We recommend checking out Carbonite, BackBlaze, CrashPlan or Mozy Home.