.djvu Files Virus - How to Remove It
THREAT REMOVAL

.djvu Files Virus – How to Remove It

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This article explains what .djvu files virus is and what issues occur in case of infection with this ransomware. In addition, in this article, you will find a complete set of removal and data recovery steps.

The .djvu files virus has recently been spotted in the wild by security researchers. It is a threat that interferes with essential systems settings in an attempt to encode certain types of files that store valuable data. In case of infection with .djvu cryptovirus you could see an extension of the same name appended to the names of all corrupted files. In addition, you could see a ransom message that blackmails you into contacting hackers and paying them a ransom fee.

Threat Summary

Name.djvu Files Virus
TypeRansomware, Crypto virus
Short DescriptionA data locker ransomware that encrypts valuable data and demands ransom payment for a decryption solution.
SymptomsImportant files are encoded and renamed with the extension .djvu The access to their information is restricted.
Distribution MethodSpam Emails, Email Attachments
Detection Tool See If Your System Has Been Affected by .djvu Files Virus

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User ExperienceJoin Our Forum to Discuss .djvu Files Virus.
Data Recovery ToolWindows 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.

.djvu Files Virus – Update January 2019

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, .djvur, .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.

.djvu Files Virus – Distribution

The main infection vector used by authors of .djvu files virus is likely to be the malspam. Malspam (spam emails that deliver malicious code) is a commonly used technique used for the spread of ransomware like .djvu. There are several common components that are typical of these emails:

  • An URL address presented in the form of an in-text link, button, image, banner or other form. Once loaded in the browser the web page associated with this link usually triggers an automatic download process of the malicious ransomware payload. After downloading the payload the same page usually activates specific scripts that execute it directly on your PC.
  • An attachment that contains the malware in it. Usually, according to the text message this file should be reviewed as soon as possible due to the importance of its information. The moment you open it on your device is the moment when you trigger the infection process with .djvu files virus. This file may be a familiar type of file such as .rar, .zip, .7z, .docx When infected such a file could be set to evade active security measures and complete the attack without leaving you any chance of detecting the malicious activities it performs on the background.

Since the security of your device and your data is of paramount importance we recommend you to use the help of free online scanners like VirusTotal and ZipeZip every next time you receive a questionable email that contains any of the mentioned components. With the help of these scanners, you will easily identify whether the components are malicious or not.

Other possible infection vectors that may be preferred by the creators of this .djvu crypto virus may be malicious advertising, browser redirects,

This article is dedicated to Skype malware, often referred to as simply Skype virus. Skype virus is a generic name for all types of Skype-related malware.
Skype viruses, potentially unwanted programs, infected third-party app installers and fake notifications for software updates.

.djvu Files Virus – Infection Overview

The name of this ransomware infection is a derivative of the extension it appends to each encoded file. In fact, there is also a legitimate file extension .djvu that is used for the storage of scanned documents, especially ones that contain a combination of text, line drawings, indexed color images, and photographs. Unfortunately, as it appears, the same extension is now misused by hackers for their malicious purposes.

Infection with the so-called .djvu files virus leads to the corruption of essential system settings as their corruption supports the encryption of valuable data. Soon after the beggining of infection process, the ransomware drops several malicious files and objects that may be located in the following system folders:

  • %Roaming%
  • %Windows%
  • %AppData%
  • %Local%
  • %Temp%

These files are designed to corrupt essential system settings. For the purpose, they access essential system components in order to implement significant changes that enable the ransomware to manipulate various system functionalities. However, it may not be an easy task to find malicious files as .djvu ransomware could erase almost all of them with the help of a single command.

What marks the end of the attack is the display of a ransom message that attempts to trick you into contacting hackers for more details about a ransom payment. This message is contained in a file called _openme.txt and all it reads is:

———————————————- ALL YOUR FILES ARE ENCRYPTED ———————————————–

Don’t worry, you can return all your files!
All your files documents, photos, databases 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 do we give to you?
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
Don’t try to use third-party decrypt tools because it will destroy your files.
Discount 50% available if you contact us first 72 hours.

—————————————————————————————————————————

To get this software you need write on our e-mail:
[email protected]

Reserve e-mail address to contact us:
[email protected]

Your personal ID:
[redacted 43 alphanumeric chars]

Let us warn you that hackers could send you broken decryption key even if you pay them the demanded ransom. So our advice is to attempt to restore .djvu files with the help of alternative data recovery solutions.

.djvu Files Virus – Encryption Process

When .djvu files virus completes all initial infection stages, it activates an inbuilt encryption module to transform the code of target files and leave them out of order. During this process, the ransomware uses the help of a sophisticated cipher algorithm probably a variation of AES or RSA. Once this algorithm is applied to a target file, the last remains inaccessible due to transformations in its original code. In addition, it is renamed with the extension .djvu.

Unfortunately, this ransomware is likely to encode all files that keep sensitive information of yours. Among these files may be all:

  • Audio files
  • Video files
  • Document files
  • Image files
  • Backup files
  • Banking credentials, etc

We remind you that the decrypter offered by hackers is only one of the ways to restore .djvu files. You could find out more data recovery approaches in the guide below.

Remove .djvu Files Virus and Restore Data

The so-called .djvu files virus is a threat with highly complex code that plagues not only your files but your whole system. So infected system should be cleaned and secured properly before you could use it regularly again. Below you could find a step-by-step removal guide that may be helpful in attempting to remove .djvu ransomware. Choose the manual removal approach if you have previous experience with malware files. If you don’t feel comfortable with the manual steps select the automatic section from the guide. Steps there enable you to check the infected system for ransomware files and remove them with a few mouse clicks.

In order to keep your system safe from ransomware and other types of malware in future, you should install and maintain a reliable anti-malware program. Additional security layer that could prevent the occurrence of ransomware attacks is

With the different types of ransomware emerging and evolving on a daily basis, a need for better protection against such viruses arises. A more specific kind of protection is always necessary, in addition to any anti-malware tools. The following article...Read more
anti-ransomware tool.

Make sure to read carefully all the details mentioned in the step “Restore files” if you want to understand how to fix encrypted files without paying the ransom. Beware that before data recovery process you should back up all encrypted files to an external drive as this will prevent their irreversible loss.

Gergana Ivanova

Gergana Ivanova

Gergana has completed a bachelor degree in Marketing from the University of National and World Economy. She has been with the STF team for three years, researching malware and reporting on the latest infections. She believes that in times of constantly evolving dependency of network connected technologies, people should spread the word not the war.

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1 Comment

  1. Ahmadou OUÉDRAOGO

    J’ai acheté spyhunter 5 et installé, mais mon problème n’est pas résolu car tous mes dossiers restent crypter v après l’analyse.Alors que faire?

    Reply

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