.qnbqw Files Virus – How to Remove It and Restore Data

.qnbqw Files Virus – How to Remove It and Restore Data

This article has been created to explain to you what is the .qnbqw files virus and how to remove it from your computer plus how you can restore files, that have been encrypted by this ransomware.

A new ranosmware virus has been detected by security researcher demonslay335. The ransomware aims to encrypt the files on the computers which have been infected by it after which leave behind the .qnbqw file extension as a suffix. The virus also drops a Notice.txt ransom note, whose main goal is to get you to pay ransom in cryptocurrencies to get the cyber-criminals behind this virus to decrypt your files. If your computer system has been infected by the .qnbqw files virus, we recommend that read this article to learn how to remove the .qnbqw files virus and how you can restore your files without having to pay ransom.

Threat Summary

Name.qnbqw Files Virus
TypeRansomware, Cryptovirus
Short DescriptionAims to encrypt the files on the compromised computers by it and asks victims to pay ransom to get them to work again.
SymptomsThe files on the compromised computer are encrypted and contain the .qnbqw file extension and a ransom note file, called .qnbqw is also dropped.
Distribution MethodSpam Emails, Email Attachments, Executable files
Detection Tool See If Your System Has Been Affected by .qnbqw Files Virus


Malware Removal Tool

User ExperienceJoin Our Forum to Discuss .qnbqw 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.

.qnbqw Files Virus – How Does It Spread

The primary method via which your computer may become compromised by the .qnbqw files virus is if you have downloaded it’s infection file from a third-party site that you should not have trusted. Such sites often upload malicious files that pretend to be legitimate:

  • Software setups.
  • Online game patches.
  • Cracks.
  • Key generators.

In addition to this, the cyber-criminals behind this ransomware virus may also take more active means of infecting computers by spreading malicious e-mail attachments via e-mail. These e-mails often contain various different types of e-mail attachments whose main purpose is to trick potential victims into believing that they are documents of importance, like invoices, receipts or other seemingly important files, whereas they are nothing more but the infection malware, which drops the payload of the .qnbqw file extension ransomware.

.qnbqw Files Virus – How Does It Work

As soon as your computer is infected by the .qnbqw ransomware, the malware may start to drop it’s payload files. They may reside in the following Windows directories;

  • %AppData%
  • %Local%
  • %LocalLow%%
  • %Temp%
  • %Roaming%

As soon as the .qnbqw files virus is dropped on the computers of victims, the ransomware may start to create various different types of mutexes, interfere with system files in Windows plus it also drops It’s ransom note file. It’s called Notice.txt and has the following message to victims:

Your files was encrypted using AES-256 algorithm. Write me to e-mail: [email protected] to get your decryption key.

The .qnbqw files virus may also add registry entries in the following Windows Registry sub-keys of user computers:

→ HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run

This activity is done with the main purpose to get the malicious files of the ransomware run automatically when you boot Windows.

Furthermore, the .qnbqw files virus may also run commands in Windows Command Prompt which may result in the shadow volume copies deleted and Windows Recovery to be disable The commands may be as follows:

→ sc stop VVS
sc stop wscsvc
sc stop WinDefend
sc stop wuauserv
sc stop BITS
sc stop ERSvc
sc stop WerSvc
cmd.exe /C bcdedit /set {default} recoveryenabled No
cmd.exe /C bcdedit /set {default} bootstatuspolicy ignoreallfailures
C:\Windows\System32\cmd.exe” /C vssadmin.exe Delete Shadows /All /Quiet

.qnbqw Files Ransomware – Encryption Activity

For the encryption methods, the qnbqw claims to use AES-256 encryption algorithm. This cipher is also known as Advanced Encryption Standard and is usually used by government agencies to encrypt top-secret files. It generates corressponding assymetric key and most likely has a master key that is known to the cyber-criminals. For the encryption of the files, the .qnbqw files virus may first run a system scan to check your computer for the types of files it will encrypt. The virus detects files based on a pre-configured list of files, based on their file extensions. The files which .qnbqw encrypts are usually documents, videos, images, archives, audio files and other often used types of files that may be of importance to you. It may look for the following types of files on your PC:


As soon as the .qnbqw files virus encrypts the files on your computer, the ransomware may immediately add it’s .qnbqw file extension to the already encrypted files. They may begin to appear like the following:

Remove .qnbqw File Ransomware and Try Restoring Your Encrypted Files

If you want to remove this ransomware virus from your computer, it Is strongly reccomended that you follow the removal instructions underneath this article. They have been created to show you methods that can help you to remove this ransomware from your PC either manually or automatically. If manual removal is not something you feel confident in doing, security professionals often advise using an advanced anti-malware software which can take care of all the malicious objects on your computer automatically.

If you want to restore files that have been encrypted by this ransomware virus, it is reccomended that you try out the alternative tools for file recovery underneath in step “2. Restore files, encrypted by .qnbqw Ransomware”.

Ventsislav Krastev

Ventsislav has been covering the latest malware, software and newest tech developments at SensorsTechForum for 3 years now. He started out as a network administrator. Having graduated Marketing as well, Ventsislav also has passion for discovery of new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management and then Network Administration, he found his passion within cybersecrurity and is a strong believer in basic education of every user towards online safety.

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