Qbaa Virus


Qbaa is a malicious virus program that attacks Windows computers and takes the files on their hard drives hostage. The files locked by Qbaa can only be released through the use of a special key that the victims must pay ransom for.

The Qbaa ransomware will leave a _readme.txt file with instructions

Getting attacked by such a hazardous computer virus can be a very unpleasant experience, especially if the files that the infection has managed to take hostage are important to the victim. Ransomware attacks are very often associated with massive data loss, as it is oftentimes not possible to retrieve the locked files. Of course, the victims are given the option of paying ransom to get their files back, but choosing this course of action is highly inadvisable. The chance of simply wasting your money by sending it to the blackmailers is too high. Many hackers do not really have the intention of releasing their victims’ data and simply keep the money they are sent without keeping their promises of providing a working solution for unlocking the inaccessible files.

The Qbaa virus

The Qbaa virus is a very harmful form of computer malware known as Ransomware, which encrypts important data thus restricting access to it. The Qbaa virus spreads with the help of Trojan horse viruses that exploit system weaknesses in order to attack vulnerable computers.

Qbaa Virus 1024x623
The Qbaa virus will encrypt your files

In most cases, the victims of Qbaa and other similar threats like Vyia, Iiof don’t notice a thing during the initial stages of the attack. Afterward, once the user’s files have been made inaccessible, the sneaky threat reveals itself and informs the victim about the details of the requested ransom. At this point, the user is faced with a choice – they can either pay the money for the ransom and hope to receive a decryption key that will set their files free or they could try to deal with the situation through alternative means, without contacting the hackers. In most cases, the latter option is the one we would advise our readers to follow. There are some things you can try in order to deal with the malware and get some of the encrypted files back and we will tell you more about that in the guide below. However, you must remember that there is no universal method for dealing with a Ransomware virus and there’s also no guarantee about if or when you’d restore your data. You just have to try everything that’s available to you as a possible recovery option and see what works in your case.

The .Qbaa file extension

The .Qbaa file extension is the filename suffix that .Qbaa adds at the end of the files that it encrypts. The .Qbaa file extension is what restricts access to your data and prevents your programs from recognizing any of the files targeted by the virus.


Danger LevelHigh (Ransomware is by far the worst threat you can encounter)
Data Recovery ToolNot Available
Detection Tool

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Remove Qbaa Ransomware


First and foremost, it is a good idea that you click the bookmark icon in your browser and save this page in your Favorites. This will make it easier for you to immediately reload it after the system restart that will be required in the next paragraph.

The next step is to restart the infected computer in Safe Mode (see this link for detailed instructions on this). You can notice any Qbaa-related processes more easily when you restart your computer in Safe Mode since only the most critical programs and processes are launched.

As soon as you enter Safe Mode, type msconfig in the Windows search field and press Enter. This action will open the System Configuration window. Once in there, your job will be to determine whether any of the items that start up when your computer is first turned on are linked to the infection. To view these items, select the Startup tab and take a look at the startup entries listed there.


If there are any entries with random names or Unknown Manufacturers, or anything else that cannot be associated with any reliable apps that you usually use, start a web research on those items to find out more about them. In the event that you have enough reliable information to disable them, the most effective method of doing so is by checking the corresponding checkbox box for each.



After that, look for suspicious processes that are operating in the background of your system, and terminate them as soon as you find them. This may be accomplished by hitting the CTRL + SHIFT + ESC keys simultaneously to open the Task Manager window.

Next, in the Processes Tab, see if anything suspicious is going on in the background. You can take a look at how much memory and CPU is being used by each process and determine whether or not this is a normal activity for that process. Check the names of the processes to see if there is anything odd or unusual in them as well. Right-click on any suspicious process and choose Open File Location from the pop-up menu that appears, as seen in the screenshot below:


A free virus scanner is given below that you can use to scan the files in the File Location folder for malicious code:

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    If the scan findings suggest that the files are malicious, go to the Processes tab, Right-click on the process that is associated with the files and choose End Process (from the context menu). After you have completed this step, remove the potentially harmful files from their original location.


    By pressing the Windows key and the R key on the keyboard at the same time, you can launch a Run command window. In it, copy and paste the following line, then click OK:

    notepad %windir%/system32/Drivers/etc/hosts

    In the Hosts file that appears on your screen, you should be able to find the word Localhost. Having a large number of strange-looking IP addresses listed under Localhost at the bottom of your file may be an indication that your computer has been accessed by a hacker. Take a look at the illustration below for an example.

    hosts_opt (1)


    You can leave a comment below this post if you spot anything unusual in your Host file, and we’ll advise you what to do and how to fix any problems we find with the IP addresses. If everything looks okay to you, simply close the file and proceed to the next step in this guide.


    To remove parasite on your own, you may have to meddle with system files and registries. If you were to do this, you need to be extremely careful, because you may damage your system.

    If you want to avoid the risk, we recommend downloading SpyHunter
    a professional malware removal tool.

    More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, and Privacy Policy.

    Typically, when a computer is compromised by ransomware or other malware, malicious items can be added to the registry without the victim’s knowledge. This is known as registry injection. Since ransomware threats, such as the one described in this article, tend to add helper entries to the victim’s computer, it is more difficult for the victim to completely eradicate the infection from their system. Following those instructions, however, you will learn how to search for and remove any files from your computer’s registry that represent a danger.

    To begin, type regedit into the Windows search box and press the Enter key on the keyboard. A window titled “Registry Editor” will appear on your computer screen. The keys CTRL and F can be used to search for entries that relate to the infection. To do so, in the Find box that appears, type the name of the malware and then click Find Next to continue.

    It is possible that unrelated registry file and directory deletions may cause damage to your operating system and the software that is installed on it. Thus, it is recommended that you use a professional removal program, such as the one available on this page, to avoid inflicting any damage to your computer. This tool performs admirably when it comes to discovering and removing malware from crucial places of your computer, such as the registry.

    Additionally, it is a good idea to enter each of the lines below in the Windows search field and manually scan them for any Qbaa-related remnants:

    1. %AppData%
    2. %LocalAppData%
    3. %ProgramData%
    4. %WinDir%
    5. %Temp%

    Look for files and folders with unusual names or with a creation date that is close to the date of the ransomware attack in each location. If you are unable to make a decision, use a powerful scanner and conduct a comprehensive inspection to assist you in determining whether something should be removed or not.

    Select and delete all the files that are saved in the Temp folder. Temporary files created by the ransomware will be removed from your computer as a result of this action.


    How to Decrypt Qbaa files

    In order to recover encrypted data from a ransomware attack, which is one of the most difficult types of malware to recover from, you may need to use a variety of methods to decode different bits of your data. First and foremost, however, you must discover which variant of ransomware has attacked your machine in order to determine the most effective strategy for retrieving your files. This information can be obtained fast and readily by looking at the file extensions of the encrypted files.

    New Djvu ransomware

    The most recent variant of the Djvu ransomware family is the STOP Djvu. The files that have been encrypted with this threat typically have the .Qbaa extension at the end. Decryption of files encoded by STOP Djvu is currently achievable, at least as of the time of this writing. This, however, applies only for files that have been encrypted with an offline key. If you’re interested in learning more about the ways to decrypt them, click on the link below. You will be directed to a file-decryption tool that may be of assistance in recovering your files:


    To obtain a copy of the STOPDjvu.exe decryptor, go to the link provided above and click the “Download” button.

    To begin using the app, right-click on the downloaded file and select “Run as Administrator”, followed by a click on the confirmation prompt that says Yes. It is possible to begin decrypting your data after you have read the licensing agreement and followed a few simple “how to use” instructions. If your files have been encrypted with unknown offline keys or online encryption, it is possible that they may not be decryptable with this tool.

    Before attempting any data recovery, it is necessary to first remove the ransomware from the affected computer. The use of professional anti-virus software, such as the one available on our website, can aid in the removal of Qbaa and other infections. You can also take advantage of the free online virus scanner available on this website if you require extra assistance. In addition, the comments area is where you can ask us questions and share your experience with the community. We would appreciate it if you let us know whether we were of help.


    About the author


    Brandon Skies

    Brandon is a researcher and content creator in the fields of cyber-security and virtual privacy. Years of experience enable him to provide readers with important information and adequate solutions for the latest software and malware problems.


    • I downloaded a file from a website. When I installed it , all my files were encrypted to end with .qbaa extension. Now I cannot access my files and they demand 490$ ransom from me to get the files decrypted. I am a photographer. all my photos and videos are encrypted with my three external hard disks. please provide me with further guidelines and inform me on what to do next.

      Please help me to overcome this problem and kindly support me. thank you.

      • Hi awantha vithanage,
        did you go to Emsisoft to download their decryptor ? With it you can decrypt your files if you are infected with an Offline key. If it is Online ID, the decryption is impossible.

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