Djvu VirusRansomwareRemoval Guide

Jjyy Virus Removal Guide (+Decrypt .jjyy files)

Jjyy Virus – Details

Jjyy is a harmful software functioning as common ransomware. Michael Gillespie, the well-known virus researcher, first found this new name in the DJVU ransomware family.

Jjyy was developed for the sole purpose to encrypt all popular file types. Rationally, as quickly as the file encryption is effectively achieved, the users are not able to get access to them. Jjyy ransomware adds its own “.jjyy” to all the encrypted files. For instance, the file “price_list.xls”, when modified by Jjyy, will be entitled as “price_list.xls.jjyy”. As soon as the file encryption is achieved, Jjyy puts its own unique text document (_readme.txt) into all the folders that keep the encrypted files.

The alert mentioned by document requesting the random os extremely comparable to the notifications provided by other ransomware risks coming from the DJVU family. The warning generally indicates that the files have been secured and the only service to get access to it is to use an unique standalone key. Regretfully, this statement is definitely real.

The method to encrypt the files used by Jjyy is not totally investigated. Nevertheless, there is no doubt that each computer owner might be provided a special decryption key, which is definitely distinct. It is exceptionally difficult to recuperate the information without the appropriate key in place.

“Don’t worry, you can return all your files!”, from _readme.txt message:

Don't worry, you can return all your files! virus

One more peculiarity of the Jjyy ransomware is that the users are not able to get access to the key. The decrypting key is hosted on a special server under the total control by the crooks who have actually released the Jjyy ransomware into the internet. In order to obtain the key and bring back the important information, the users are informed to contact the scams through email or by telegram and to pay the ransom in the quantity of $980.

The message likewise says that the people must call the Jjyy authors within 72 hours upon the moment of the data file encryption. The alert indicates that by doing so the people will obtain a 50% discount rate, therefore, the ransom amount drops down to $490.

No matter what the quantity of the ransom is, we highly advise that you do not pay the ransom. There is no assurance that these online scoundrels will keep their promises, so they may not care at all what the victims feel about the encryption, even when the quantity of the ransom is received into their accounts. Hence, paying ransom often does not result in an effective healing. So, the users might simply lose their money for absolutely nothing.

Similarly, we urge you not to get in touch with the scams as they advise. Do not move cash into their wallets. There are no applications that might break the Jjyy ransomware or bring back the information at no cost. For that reason, the only proper choice is to restore the data from possible backups (if readily available).

Virus Summary

NameJjyy Ransomware
File Extensionjjyy
TypeRansomware
FamilyDJVU
Short DescriptionThe ransomware encrypts all the data stored on your system and requires a ransom to be paid on your part supposedly to recover your important files.
SymptomsFile encryption by the ransomware is performed by means of the AES-256 algorithm (CFB mode) encryption algorithm. Once the encryption is completed, the ransomware adds its special .jjyy extension to all the files modified by it.
Distribution MethodAdware bundles and software cracks
Similar InfectionsLokas, Besub, Nusar
Jjyy Removal Tool   GridinSoft Anti-Malware
Jjyy Decryption Tool   Emsisoft Djvu Decryptor

Do not forget that the Internet is now full of infections similar to the Jjyy virus. For example, this particular threat is essentially identical to Brusaf and other ransomware-type infections. These damaging utilities have actually been established in order to encrypt the important information and reveal the need for the users to pay the ransom. All these infections utilize the similar algorithm to generate the specific key for successful files decryption.

Unless the Jjyy ransomware is still under the advancement process or has actually got some concealed bugs, it is not possible to bring back the information by hand. Thus, the only working option to avoid the loss of your important information is to frequently preserve updated backups of all your vital files.

Another important piece of advice is to keep the backups on unique storage not connected to your main device. For example, you may store it on the USB Flash Drive, or some external drive, or by using the cloud data storage services. Keeping the backups on your regular drive is very dangerous, since the backup may also be encrypted by the Jjyy ransomware.

Leakages for the Jjyy ransomware attack.

Jjyy uses many courses to penetrate the susceptible computers. It is not certain what specific technique was utilized in your case, nevertheless, the intrusion may happen through the following channels:

  • bundling with third-party programs, mainly free apps;
  • spam emails from the unknown senders;
  • sites providing free hosting;
  • P2P (peer-to-peer) torrent software.

There are times when the Jjyy might disguise itself as some real application, for instance, through the misleading signals requiring setup of some software upgrade. This is the most typical trick utilized by the frauds to inject the Jjyy ransomware files into the system. This way users partially participate in its installation, without plainly understanding the risk.

Moreover, the scams might send out unsolicited spam email with difficult informs motivating the people to open suspicious accessories or click some download links, for instance, those encouraging individuals to open particular pictures, text files, tax files and other information.

No doubt, opening these files or clicking on the malicious links may basically harm the system. Fake Media Player upgrade notices may result in the Jjyy ransomware infiltration. Likewise, downloading the cracked software application might additionally consist of the ransomware installer. The last but not the least, setup of Jjyy may take place through some Trojan horses that might be installed stealthily into the system and without the user’s direct authorization and even approval.

Avoiding the Jjyy virus injection.

Naturally, there is no outright guarantee that your computer will be constantly free of any malware attacks, nevertheless, we want to share some helpful tips with you to make it more secure. Make sure to pay really attention while browsing the web and particularly while getting cost-free programs. Do not open any dubious e-mail accessories, especially if the sender is not understood to you.

Do not forget that particular freeware installer might also include some other extra apps in the bundle. These extra applications may be extremely damaging. It is of utmost importance to keep your anti-virus software application and your operating system in basic to be constantly appropriately updated.

It is rather sensible that downloading pirated programs is unlawful, nevertheless, additionally, such unauthorized software use might also bring serious damage to your PC. Hence, do not download any cracked programs. Plus, the truth that your present anti-virus did not secure the system from the Jjyy ransomware is an excellent factor for you to reevaluate your choices and switch to another program that can render the securing functions on a better level.

Below please find the quotation from the Jjyy text file:

ATTENTION!

 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:
 https://we.tl/t-2P5WrE5b9f
 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:
 restorealldata@firemail.cc

 Reserve e-mail address to contact us:
 gorentos@bitmessage.ch

 Our Telegram account:
 @datarestore

Screenshot of files with “.jjyy” extension added by the ransomware:”

Jjyy Ransomware - encrypt files with .jjyy extension

Use GridinSoft Anti-Malware to remove Jjyy ransomware from your computer

1.Download GridinSoft Anti-Malware.

You can get GridinSoft Anti-Malware by clicking the button below:

  GridinSoft Anti-Malware

2. Double-click on the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-ag.exe file to install GridinSoft Anti-Malware on your computer.
GridinSoft Anti-Malware
An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.
GridinSoft Anti-Malware Setup

3. Press Install button for run GridinSoft Anti-Malware.

GridinSoft Anti-Malware Install

3.Once installed, GridinSoft Anti-Malware will automatically run.

GridinSoft Anti-Malware  Start

4. Wait for the GridinSoft Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your computer for Win Speedup 2018 and other malicious programs. This process can take a 20-30 minutes, so we suggest you periodically check on the status of the scan process.
GridinSoft Anti-Malware Scan

5. Click on “Clean Now”.

When the scan has completed, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.
GridinSoft Anti-Malware Scan Result

Use Emsisoft Decryptor for restore jjyy files

You can get Emsisoft Decryptor by clicking the button below:

  Emsisoft Decryptor

  1. Run the decryptor as an administrator. The license terms will show up, which you have to agree to by clicking the “Yes” button.
  2. Once the license terms are accepted, the primary decryptor user interface opens.
  3. By default, the decryptor will pre-populate the locations to decrypt with the currently connected drives and network drives. Additional locations can be added using the Add” button.
  4. Decryptors typically offer various options depending on the particular malware family. The available options are located in the Options tab and can be enabled or disabled there. You can find a detailed list of the available Options below.
  5. After you have added all the locations you want to decrypt to the list, click the “Decrypt” button to start the decryption process. The screen will switch to a status view, informing you about the current process and decryption status of your files
  6. The decryptor will inform you once the decryption process is finished. If you require the report for your personal records, you can save it by clicking the “Save log” button. You can also copy it straight to your clipboard to paste it into emails or forum posts if you are asked to.
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Daniel Zimmermann

Daniel Zimmermann has been writing on security and malware subjects for many years and has been working in the security industry for over 10 years. Daniel was educated at the Saarland University in Saarbrücken, Germany and currently lives in New York.

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One Comment

  1. Can you please include a how to decrypt online keys?

    The knowledge in this how-to is already all over the internet. The decryption program mentioned above ONLY decrypts offline keys. It would be helpful if this was included in this review that this only decrypts offline keys, or if you have found a way to decrypt the offline keys.

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