What Is QARJ Virus?
The QARJ Virus virus is a STOP/DJVU variant that seeks to encrypt your files and demand a ransom payment in Bitcoin. It is crucial to be aware of this threat and to follow the information in this article about .QARJ Virus files, the _readme.txt note, and how to handle an infection on your device.
QARJ Virus – Why Is My Windows Infected?
Opening malicious emails, downloading software from unverified sites, clicking on malicious online ads and links, and connecting infected external devices such as USB drives are the most typical ways in which QARJ Virus ransomware can be contracted. The malware utilizes an obfuscator to stealthily infiltrate your device without being noticed.
QARJ Ransomware – How Did I Get Infected?
This ransomware is usually dispersed via email attachments, dubious websites, and programs downloaded from untrustworthy sources. It can even be transmitted through legitimate websites that have been compromised.
- If it is sent to you as an e-mail attachment or a URL.
- By being downloaded from a shady site.
QARJ Ransomware – What Does It Do?
QARJ Virus Ransomware is a dangerous virus that encrypts all of the files on an infected computer and then requests a fee for the decryption key. The payload files associated with this virus often change the file extensions of the encrypted files to “.QARJ Virus”. These files may be found in the following directories of a Windows operating system:
- %Local%
- %Temp%
- %Windows%
- %SystemDrive%
- %LocalLow%
- %AppData%
- %System%
- %system32%
The _readme.txt ransom note, containing the following extortion message is also dropped:
This ransomware virus also creates a lot of different value entries in multiple Registries of Windows.
QARJ Virus Virus – Details
Name | QARJ Virus virus, also known as UDS:Trojan.Win32.Chapak.gen, Ransom:Win32/StopCrypt.KM!MTB, Win32:PWSX-gen [Trj], Win32:PWSX-gen [Trj], A Variant Of Win32/GenKryptik.FHJB – more detections of this virus on VirusTotal |
File Extension | .QARJ Virus |
Type | Ransomware, Cryptovirus |
Short Description | The ransomware encrypts files on your computer system and demands a ransom to be paid to allegedly recover them. |
Symptoms | The QARJ Virus Virus ransomware will encrypt your files by appending the .QARJ Virus extension to them. |
Ransom Demanding Note | _readme.txt |
Distribution Method | Spam Emails, Email Attachments |
Detection Tool |
See If Your Mac Has Been Affected by QARJ Virus
Download
Malware Removal Tool
|
What Are .QARJ Virus Files
Files encrypted using Advanced Encryption Standard (AES encryption algorithm) contain the .QARJ Virus file extension. This encryption method combines symmetric-key and public-key cryptography to guarantee the privacy and safety of the files. Such files may be vulnerable to being encrypted by a virus.
- Videos (.mp4, .avi, etc.).
- Audio (.mp3, .wav, etc.).
- Picture file kinds (.jpg, .png, .etc).
- Archive file formats (.zip, .rar, etc).
- Documents of different types (.docx, .pptx, etc.).
- Others.
How to Open .QARJ Virus Files
It is not recommended to purchase a decryption key from the ransomware authors, as there is no guaranteed way to open .QARJ Virus virus encrypted files without a decryption key. However, you may attempt to use a data recovery software or system backup to recover your files, as the ransomware may not have completely destroyed the original files. Additionally, you can also contact the ransomware authors to see if they offer a free decryption key.
What To Do If My Files Are .QARJ Virus?
The best way to tackle this ransomware attack is to delete the malicious software from your system and restore your .QARJ Virus encrypted files from a backup. If you don’t have a backup, then you may have the option of using a reliable decryption tool to attempt to decrypt your files. Unfortunately, as DJVU is a relatively recent ransomware, there is presently no free tool accessible to decrypt its encryption cipher, unless your decryption key is stored offline.
How To Protect Windows from QARJ Virus In The Future?
To protect yourself from DJVU ransomware and other malicious software, it is essential to keep your system updated with the latest security updates, and to maintain an up-to-date antivirus program. Additionally, it is critical to understand how to safely store your files to protect them from ransomware.
How to Remove QARJ Virus Virus?
The optimal approach for eliminating the QARJ Virus virus is to make use of a dependable anti-virus program. If you are a more experienced user, you may also attempt to manually delete any suspicious or malicious files related to it by following the instructions below. However, this strategy is only suitable for users with advanced knowledge.
Once the anti-malware software is installed, you should execute a full system scan to detect any malicious files connected to the QARJ Virus ransomware. After the scan has been completed, the program should be able to quarantine and remove any malicious files that it detects.
Once this ransomware has been removed, you should alter all of your passwords and ensure that your security system is up-to-date. Additionally, you should make sure to regularly back up your data in case of future attack attempts.
How to Decrypt / Fix .QARJ Virus Files?
To attempt to decrypt the .QARJ Virus files, you can refer to the STOP Ransomware decryption guide linked here. These files are encrypted, and they have either an online or offline decryption key.
- Step 1
- Step 2
- Step 3
- Step 4
- Step 5
Step 1: Scan for QARJ Virus with SpyHunter Anti-Malware Tool
Ransomware Automatic Removal - Video Guide
Step 2: Uninstall QARJ Virus 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:
![delete ransomware from windows step 1](https://cdn.sensorstechforum.com/wp-content/uploads/2019/06/1-step-remove-virus-sensorstechforum-com.jpg)
![delete ransomware from windows step 2](https://cdn.sensorstechforum.com/wp-content/uploads/2020/10/Run-Remove-Uninstal-pop-up-adware-hijacker-virus-sensorstechforum-2.jpg)
![delete ransomware from windows step 3](https://cdn.sensorstechforum.com/wp-content/uploads/2020/10/Run-Remove-Uninstal-pop-up-adware-hijacker-virus-sensorstechforum-3.jpg)
Step 3: Clean any registries, created by QARJ Virus 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 QARJ Virus there. This can happen by following the steps underneath:
![delete ransomware virus registries step 1](https://cdn.sensorstechforum.com/wp-content/uploads/2019/06/5-step-remove-a-virus-sensorstechforum-com.jpg)
![delete ransomware virus registries step 2](https://cdn.sensorstechforum.com/wp-content/uploads/2019/06/6-step-remove-virus-sensorstechforum-com.jpg)
![delete ransomware virus registries step 3](https://cdn.sensorstechforum.com/wp-content/uploads/2019/06/7-step-remove-virus-sensorstechforum-com.jpg)
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 QARJ Virus
![remove ransomware in safe mode step 1](https://cdn.sensorstechforum.com/wp-content/uploads/2019/06/1-step-remove-virus-sensorstechforum-com.jpg)
![remove ransomware in safe mode step 2](https://cdn.sensorstechforum.com/wp-content/uploads/2019/06/2-step-remove-virus-sensorstechforum-com.jpg)
![remove ransomware in safe mode step 3](https://cdn.sensorstechforum.com/wp-content/uploads/2019/06/3-step-remove-virus-sensorstechforum-com.jpg)
![remove ransomware in safe mode step 4](https://cdn.sensorstechforum.com/wp-content/uploads/2019/06/4-step-remove-virus-sensorstechforum-com.jpg)
![remove ransomware in safe mode step 5](https://cdn.sensorstechforum.com/wp-content/uploads/2020/10/windows-safe-mode-running.jpg)
Step 5: Try to Restore Files Encrypted by QARJ Virus.
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 QARJ Virus 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.
QARJ Virus-FAQ
What is QARJ Virus Ransomware?
QARJ Virus 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 QARJ Virus 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 QARJ Virus Infect?
Via several ways.QARJ Virus 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 QARJ Virus 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 .QARJ Virus files?
You can't without a decryptor. At this point, the .QARJ Virus 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 .QARJ Virus files successfully, then do not despair, because this virus is still new.
Can I Restore ".QARJ Virus" Files?
Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .QARJ Virus 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 QARJ Virus 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 QARJ Virus ransomware and then remove it without causing any additional harm to your important .QARJ Virus 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 QARJ Virus 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 QARJ Virus Research
The content we publish on SensorsTechForum.com, this QARJ Virus 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 QARJ Virus 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.
How to recognize trustworthy sources:
- Always check "About Us" web page.
- Profile of the content creator.
- Make sure that real people are behind the site and not fake names and profiles.
- Verify Facebook, LinkedIn and Twitter personal profiles.