Djvu Virus Ransomware
Djvu is a malicious software application working as common ransomware. Michael Gillespie, the well-known malware researcher, first discovered this new name in the DJVU ransomware family.
Djvu was created for the sole function to encrypt all popular file types. Rationally, as soon as the encryption is successfully achieved, the users are not able to get access to them. Djvu ransomware adds its own “.djvu” to all the encrypted files. For instance, the file “price_list.xls”, once modified by Djvu, will be entitled as “price_list.xls.djvu”. When the file encryption is accomplished, Djvu puts its own special text document (_readme.txt) into all the folders that save the encrypted files.
The message mentioned by _readme.txt requesting the random os very similar to the notices offered by other ransomware dangers coming from the DJVU family. The caution essentially indicates that the files have been encrypted and the only solution to get access to it is to use a distinct standalone key. Regretfully, this statement is absolutely true.
The approach to secure the files used by Djvu is not totally looked into. However, there is no doubt that each computer owner might be issued a special decryption key, which is absolutely unique. It is extremely difficult to recuperate the information without the suitable type in place.
“Don’t worry, you can return all your files!”, from text file message:
One more peculiarity of the Djvu virus is that the users are not able to get access to the key. The decrypting key is hosted on an unique server under the total control by the scoundrels who have actually released the Djvu infection into the web. In order to obtain the key and bring back the essential information, the users are informed to contact the frauds via email or by telegram and to pay the ransom in the amount of $980.
The message likewise states that individuals must contact the Djvu authors within 72 hours upon the moment of the data encryption. The alert shows that by doing so individuals will obtain a 50% discount rate, for that reason, the ransom quantity drops down to $490.
Djvu crypted your information, nevertheless, it may not be the only danger on your computer. Plus, the ransomware might be concealed deep in the system. To find and erase the hazard entirely, we recommend you to describe the help of GridinSoft Anti-Malware .
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No matter what the quantity of the ransom is, we highly advise that you do not pay the ransom. There is no guarantee that these online crooks will keep their guarantees, so they might not care at all what the victims feel about the file encryption, even when the quantity of the ransom is gotten into their accounts. Hence, paying ransom typically does not lead to an effective healing. So, the users may merely lose their money for nothing.
Likewise, we urge you not to get in touch with the frauds as they instruct. Do not transfer cash into their wallets. There are no applications that could split the Djvu virus or restore the information at no charge. Therefore, the only correct choice is to restore the data from possible backups (if available).
Virus Summary
| Name | Djvu Ransomware |
| File Extension | djvu |
| Type | Ransomware |
| Family | DJVU |
| Short Description | The 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. |
| Symptoms | File 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 .djvu extension to all the files modified by it. |
| Distribution Method | Adware bundles and software cracks |
| Similar Infections | Lokas, Besub, Nusar |
| Djvu Removal Tool | GridinSoft Anti-Malware |
| Djvu Decryption Tool | Emsisoft Djvu Decryptor |
Do not forget that the Web is now filled with infections similar to the Djvu ransomware. For instance, this particular danger is generally similar to Brusaf and other ransomware-type infections. These damaging utilities have actually been developed in order to encrypt the essential data and reveal the demand for the users to pay the ransom. All these infections utilize the similar algorithm to produce the specific key for successful files decryption.
Unless the Djvu ransomware is still under the advancement procedure or has got some hidden bugs, it is not possible to bring back the data manually. Hence, the only working service to prevent the loss of your important information is to frequently keep updated backups of all your important data.
Another important piece of suggestions is to save the backups on unique storage not linked to your primary computer. For instance, you may save it on the USB Flash Drive, or some external hard disk drive, or by using the cloud data storage services. Keeping the backups on your regular drive is extremely dangerous, since the backup might also be encrypted by the Djvu infection.
Leaks for the Djvu ransomware attack.
Djvu uses lots of paths to penetrate the susceptible computer systems. It is not particular what particular approach was used in your case, however, the intrusion might occur through the following channels:
- bundling with third-party programs, primarily free apps;
- spam emails from the unidentified senders;
- websites supplying complimentary hosting;
- P2P (peer-to-peer) torrent software.
There are times when the Djvu might disguise itself as some real application, for instance, through the misleading alerts requiring setup of some software upgrade. This is the most common technique utilized by the scams to inject the Djvu infection files into the system. In this manner users partly take part in its installation, without clearly understanding the risk.
Furthermore, the scams might send unsolicited spam e-mail with difficult notifies encouraging the people to open dubious accessories or click on some download links, for instance, those encouraging individuals to open particular photos, text files, tax files and other info.
No doubt, opening these files or clicking the harmful links might basically damage the system. Fake Media Player update notifications may result in the Djvu ransomware infiltration. Similarly, downloading the cracked software may furthermore contain the ransomware installer. The last however not the least, installation of Djvu might take place through some Trojan horses that may be installed stealthily into the system and without the user’s direct authorization and even consent.
Avoiding the Djvu ransomware attack.
Obviously, there is no absolute assurance that your computer will be constantly without any malware attacks, nevertheless, we want to share some helpful ideas with you to make it more secure. Ensure to pay very very close attention while searching the web and particularly while downloading cost-free programs. Do not open any suspicious e-mail attachments, especially if the sender is not known to you.
Do not forget that certain freeware installer may also include some other extra apps in the bundle. These additional applications may be really harmful. It is of utmost importance to keep your anti-virus software and your os in basic to be constantly effectively upgraded.
It is quite sensible that downloading cracked programs is unlawful, nevertheless, additionally, such unauthorized programs usage may also bring severe damage to your PC. For this reason, do not download any cracked programs. Plus, the reality that your current anti-virus did not secure the system from the Djvu ransomware is a good reason for you to reconsider your choices and change to another program that can render the protecting functions on a better level.
Below please find the quotation from the Djvu 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 “.djvu” extension added by the virus:”
Use GridinSoft Anti-Malware to remove Djvu ransomware from your computer
1.Download GridinSoft Anti-Malware.
You can get GridinSoft Anti-Malware by clicking the button below:
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.
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.
3. Press Install button for run GridinSoft Anti-Malware.
3.Once installed, GridinSoft Anti-Malware will automatically run.
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.
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.
Use Emsisoft Decryptor for restore djvu files
You can download Emsisoft Decryptor by clicking the button below:
- Run the decryptor as an administrator. The license terms will show up, which you have to agree to by clicking the “Yes” button.
- Once the license terms are accepted, the primary decryptor user interface opens.
- 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.
- 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.
- 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
- 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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