This article will help you remove Djvuu Ransomware totally. Follow the ransomware removal instructions provided at the end of the article.
Djvuu is the name of a virus that encrypts your files, while appending the .djvuu extension to each file. Files are locked with both AES and RSA 1024-bit military grade encryption algorithms. The Djvuu cryptovirus will encrypt your data and when finished, it will demand money as a ransom to allegedly get your files restored. Keep on reading the article to see how you could try to potentially recover some of your files.
Threat Summary
| Name | Djvuu Ransomware |
| Type | Ransomware, Cryptovirus |
| Short Description | The ransomware encrypts files on your computer machine and demands a ransom to be paid to allegedly recover them. |
| Symptoms | The ransomware will encrypt your files with the help of the AES and RSA encryption algorithms. All locked files will have the .Djvuu extension appended to them. |
| Distribution Method | Spam Emails, Email Attachments |
| Detection Tool |
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User Experience | Join Our Forum to Discuss Djvuu Ransomware. |
| 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. |
Djvuu Ransomware – Decryptor Released
Recently a series of new STOP ransomware variants have been released in active attack campaigns. As revealed by security experts, the main difference between newly discovered strains is the extension they use to mark corrupted files. Here you could see a list of all other extensions that testify for infection with a strain of STOP ransomware:
Happily, security experts have managed to crack the code of almost all variants of this ransomware family and released a decryption tool. So at this point only victims of .puma, .pumax and .pumas, .djvu, .djvuq, .Djvuu, .djvut, .djvuu, .pdff, .tfude, .tfudeq, .tro, .udjvu, .tfudet STOP ransomware versions are able to decrypt their files with the help of the decryption tool created by the security researchers AfshinZlfgh and Michael Gillespie.
In case that you are victim of one of these versions you can download it via the Decryption Tool link. The tool requires a pair of an original file and its encrypted version.
Djvuu Ransomware – Distribution Ways
The Djvuu ransomware can be acquired by interacting with a malicious element from the Internet or another source. The most popular tactics for spreading these samples include the following:
- Email Phishing Campaigns — The criminals can coordinate large-scale campaigns by impersonating well-known products, services and companies by copying their emails. The body contents can contain links to the virus files or they can be attached directly to the emails. Computer users will need to carefully check every single message that requires some kind of interaction.
- Malicious Sites — An alternative is the creation of hacker-made web sites that are copycat imitations of legitimate download portals, product pages and other commonly accessed sites. Interaction with any of them can lead to the Djvuu ransomware infection. The pages typically include a combination of similar domain names and security certificates to make them appear as legitimate.
- File-Sharing Networks — Many virus samples are uploaded to peer-to-peer networks like BitTorrent. They can be spread independently or through any of the popular payload carriers.
- Malware Documents — The criminals can embed the necessary virus infection code into documents of all popular types: spreadsheets, presentations, databases and text documents. When they are run by the victims a prompt will appear asking them to enable the built-in scripts (macros) to “correctly view” the document. This will trigger the commands leading to the infection.
- Application Installers — The criminals can obtain installers of popular applications and modify them with the relevant Djvuu ransomware code. Often applications that are downloaded by the average end users are chosen by the hackers: system utilities, creativity suites, productivity applications and etc.
Large-scale distribution attempts can be done by including the relevant instructions in browser hijackers. They are malicious web browser plugins which are uploaded to the relevant repositories of the browsers with fake user reviews and developer credentials. Their descriptions will advertise feature additions or performance optimizations just to get the users into downloading and installing the dangerous code.
Djvuu Ransomware – In-Depth Overview
The Djvuu ransomware as an example of the STOP ransomware family can be configured to cause a large variety of actions depending on the exact configuration file. Based on analysis of the prior samples we can assume that the first commands will be related to information gathering — the relevant engine can acquire data both about the individual user and the machine itself. This potentially allows the criminals to hijack sensitive data about the users — the engine can retrieve information about their name, address, location and even any stored account credentials. The retrieved information about the machine includes a report of the installed hardware components which is used to assign an unique infection ID.
The gathered information sets can be used further to carry out a security bypass and persistent infection installation. Using the acquired data the Djvuu ransomware engine will scan for the presence of any security software that can block the correct virus execution. Such include anti-virus engines, firewalls, intrusion detection systems, debug environments and virtual machine hosts. As soon as this is done the Djvuu ransomware will be able to take over control of the affected computer. This will make it possible for it to access system settings, WIndows REgistry values and boot options. The made changes will make the virus difficult to remove with manual user guides as it will automatically start each time the computer is run.
If configured so the Windows Registry modifications will take place by modifying both values belonging to the operating system and those that are used by individual applications. If the system ones are modified then certain services can stop working altogether and the victims will experience serious performance and stability issues. Modifications to individual applications can result in unexpected errors during usage.
Practically any other behavior can be exhibited as the Djvuu ransomware is built-on on a modular code base allowing the hacker operators to change all important parameters and expected outcome.
Djvuu Ransomware – Encryption Process
What is known for the encryption process of the Djvuu ransomware is that every file that gets encrypted will receive the .djvuu extension. The encryption algorithms used to lock the files are AES and RSA 1024-bit.
The targeted extensions of files which are sought to get encrypted are currently unknown and if a list is discovered, it will be posted here as the article gets updated. The files used most by users and which are probably encrypted are from the following categories:
- Audio files
- Video files
- Document files
- Image files
- Backup files
- Banking credentials, etc
The Djvuu cryptovirus could be set to erase all the Djvuu Volume Copies from the Windows operating system with the help of the following command:
→vssadmin.exe delete Djvuu /all /Quiet
In case the above-stated command is executed that will make the encryption process more efficient. That is due to the fact that the command eliminates one of the prominent ways to restore your data. If your computer device was infected with this ransomware and your files are locked, read on through to find out how you could potentially restore your files back to normal.
Remove Djvuu Ransomware Virus and Restore .Djvuu Files
If your computer got infected with the Djvuu ransomware virus, you should have a bit of experience in removing malware. You should get rid of this ransomware as quickly as possible before it can have the chance to spread further and infect other computers. You should remove the ransomware and follow the step-by-step instructions guide provided below.
Martin Beltov
Martin graduated with a degree in Publishing from Sofia University. As a cyber security enthusiast he enjoys writing about the latest threats and mechanisms of intrusion.
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Step 1: Scan for Djvuu Ransomware with SpyHunter Anti-Malware Tool
Ransomware Automatic Removal - Video Guide
Step 2: Uninstall Djvuu Ransomware and related malware 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:
Follow the instructions above and you will successfully delete most unwanted and malicious programs.
Step 3: Clean any registries, created by Djvuu Ransomware 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 Djvuu Ransomware there. This can happen by following the steps underneath:
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: Boot Your PC In Safe Mode to isolate and remove Djvuu Ransomware
Step 5: Try to Restore Files Encrypted by Djvuu Ransomware.
Method 1: Use STOP Decrypter by Emsisoft.
Not all variants of this ransomware can be decrypted for free, but we have added the decryptor used by researchers that is often updated with the variants which become eventually decrypted. You can try and decrypt your files using the instructions below, but if they do not work, then unfortunately your variant of the ransomware virus is not decryptable.
Follow the instructions below to use the Emsisoft decrypter and decrypt your files for free. You can download the Emsisoft decryption tool linked here and then follow the steps provided below:
1 Right-click on the decrypter and click on Run as Administrator as shown below:
2. Agree with the license terms:
3. Click on "Add Folder" and then add the folders where you want files decrypted as shown underneath:
4. Click on "Decrypt" and wait for your files to be decoded.
Note: Credit for the decryptor goes to Emsisoft researchers who have made the breakthrough with this virus.
Method 2: Use data recovery software
Ransomware infections and Djvuu Ransomware 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.
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.
Djvuu Ransomware-FAQ
What is Djvuu Ransomware Ransomware?
Djvuu Ransomware 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 algorithms 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.
What Does Djvuu Ransomware Ransomware Do?
Ransomware in general is a malicious software that is designed to block access to your computer or files until a ransom is paid.
Ransomware viruses can also damage your system, corrupt data and delete files, resulting in the permanent loss of important files.
How Does Djvuu Ransomware Infect?
Via several ways.Djvuu Ransomware Ransomware infects computers by being sent via phishing emails, 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.
Another way you may become a victim of Djvuu Ransomware 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 .Djvuu Ransomware files?
You can't without a decryptor. At this point, the .Djvuu Ransomware files are encrypted. You can only open them once they are decrypted using a specific decryption key for the particular algorithm.
What to Do If a Decryptor Does Not Work?
Do not panic, and backup the files. If a decryptor did not decrypt your .Djvuu Ransomware files successfully, then do not despair, because this virus is still new.
Can I Restore ".Djvuu Ransomware" Files?
Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .Djvuu Ransomware files.
These methods are in no way 100% guaranteed that you will be able to get your files back. But if you have a backup, your chances of success are much greater.
How To Get Rid of Djvuu Ransomware Virus?
The safest way and the most efficient one for the removal of this ransomware infection is the use a professional anti-malware program.
It will scan for and locate Djvuu Ransomware ransomware and then remove it without causing any additional harm to your important .Djvuu Ransomware files.
Can I 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:
Germany - Offizielles Portal der deutschen Polizei
United States - IC3 Internet Crime Complaint Centre
United Kingdom - Action Fraud Police
France - Ministère de l'Intérieur
Italy - Polizia Di Stato
Spain - Policía Nacional
Netherlands - Politie
Poland - Policja
Portugal - Polícia Judiciária
Greece - Cyber Crime Unit (Hellenic Police)
India - Mumbai Police - CyberCrime Investigation Cell
Australia - Australian High Tech Crime Center
Reports may be responded to in different timeframes, depending on your local authorities.
Can You Stop Ransomware from Encrypting Your Files?
Yes, you can prevent ransomware. The best way to do this is to ensure your computer system is updated with the latest security patches, use a reputable anti-malware program and firewall, backup your important files frequently, and avoid clicking on malicious links or downloading unknown files.
Can Djvuu Ransomware Ransomware Steal Your Data?
Yes, in most cases ransomware will steal your information. It is a form of malware that steals data from a user's computer, encrypts it, and then demands a ransom in order to decrypt it.
In many cases, the malware authors or attackers will threaten to delete the data or publish it online unless the ransom is paid.
Can Ransomware Infect WiFi?
Yes, ransomware can infect WiFi networks, as malicious actors can use it to gain control of the network, steal confidential data, and lock out users. If a ransomware attack is successful, it could lead to a loss of service and/or data, and in some cases, financial losses.
Should I Pay Ransomware?
No, you should not pay ransomware extortionists. Paying them only encourages criminals and does not guarantee that the files or data will be restored. The better approach is to have a secure backup of important data and be vigilant about security in the first place.
What Happens If I Don't Pay Ransom?
If you don't pay the ransom, the hackers may still have access to your computer, data, or files and may continue to threaten to expose or delete them, or even use them to commit cybercrimes. In some cases, they may even continue to demand additional ransom payments.
Can a Ransomware Attack Be Detected?
Yes, ransomware can be detected. Anti-malware software and other advanced security tools can detect ransomware and alert the user when it is present on a machine.
It is important to stay up-to-date on the latest security measures and to keep security software updated to ensure ransomware can be detected and prevented.
Do Ransomware Criminals Get Caught?
Yes, ransomware criminals do get caught. Law enforcement agencies, such as the FBI, Interpol and others have been successful in tracking down and prosecuting ransomware criminals in the US and other countries. As ransomware threats continue to increase, so does the enforcement activity.
About the Djvuu Ransomware Research
The content we publish on SensorsTechForum.com, this Djvuu Ransomware 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 Djvuu Ransomware 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.
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.
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