Djvu VirusRansomwareRemoval Guide

Qscx Virus Removal Guide (+Decrypt .qscx files)

Qscx Virus – Details

Qscx is a harmful software application working as common ransomware. Michael Gillespie, the well-known malware researcher, very first discovered this new name in the DJVU ransomware family.

Qscx was created for the sole purpose to encrypt all popular file types. Rationally, as soon as the encryption is effectively achieved, the users are unable to get access to them. Qscx ransomware includes its own “.qscx” to all the encrypted files. For example, the file “price_list.xls”, as soon as modified by Qscx, will be entitled as “price_list.xls.qscx”. As soon as the encryption is achieved, Qscx puts its own unique text file (_readme.txt) into all the folders that store the encrypted files.

The alert specified by _readme.txt asking for the random os extremely similar to the alerts provided by other ransomware threats coming from the DJVU family. The caution basically shows that the information has been encrypted and the only option to get access to it is to use a distinct standalone key. Regretfully, this statement is absolutely true.

The technique to encrypt the files utilized by Qscx is not entirely researched. However, there is no doubt that each computer system owner might be released a special decryption key, which is definitely distinct. It is very difficult to recover the information without the appropriate key in location.

“Don’t worry, you can return all your files!”, from _readme.txt message:

Don't worry, you can return all your files! virus

One more peculiarity of the Qscx ransomware is that the users are unable to get access to the key. The decrypting key is hosted on a special server under the total control by the scoundrels who have actually introduced the Qscx virus into the world wide web. In order to get the key and restore the crucial information, the users are told to connect with the frauds by means of e-mail or by telegram and to pay the ransom in the amount of $980.

The message also says that individuals ought to contact the Qscx authors within 72 hours upon the moment of the data file encryption. The alert shows that by doing so individuals will obtain a 50% discount, for that reason, the ransom amount falls to $490.

No matter what the amount of the ransom is, we highly advise that you do not pay the ransom. There is no assurance that these online scoundrels will keep their pledges, so they may not care at all what the victims feel about the file encryption, even when the amount of the ransom is received into their accounts. Hence, paying ransom often does not lead to a successful recovery. So, the users might merely lose their money for absolutely nothing.

Similarly, we prompt you not to contact the scams as they advise. Do not move cash into their wallets. There are no applications that might split the Qscx virus or bring back the information at no cost. For that reason, the only proper choice is to restore the information from possible backups (if readily available).

Virus Summary

NameQscx Ransomware
File Extensionqscx
Short DescriptionThe ransomware encrypts all the data stored on your system and requires a ransom to be paid on your part supposedly to recover your important files.
SymptomsFile encryption by the ransomware is performed by means of the AES-256 algorithm (CFB mode) encryption algorithm. Once the encryption is completed, the ransomware adds its special .qscx extension to all the files modified by it.
Distribution MethodAdware bundles and software cracks
Similar InfectionsLokas, Besub, Nusar
Qscx Removal Tool   GridinSoft Anti-Malware
Qscx Decryption Tool   Emsisoft Djvu Decryptor

Do not forget that the Web is now full of infections similar to the Qscx virus. For example, this particular danger is basically identical to Brusaf and other ransomware-type infections. These damaging energies have actually been established in order to encrypt the crucial data and express the demand for the users to pay the ransom. All these infections utilize the similar algorithm to create the particular key for successful files decryption.

Unless the Qscx ransomware is still under the development procedure or has actually got some concealed bugs, it is not possible to restore the information by hand. Therefore, the only working option to avoid the loss of your crucial data is to frequently preserve current backups of all your essential files.

Another crucial piece of recommendations is to keep the backups on special storage not linked to your main device. For instance, you might keep it on the USB Flash Drive, or some external hard disk drive, or by using the cloud data storage services. Keeping the backups on your system drive is extremely dangerous, considering that the backup might also be encrypted by the Qscx .

Leaks for the Qscx ransomware attack.

Qscx utilizes many courses to infiltrate the susceptible computer systems. It is not particular what specific technique was used in your case, nevertheless, the invasion might occur via the following channels:

  • bundling with third-party programs, primarily free apps;
  • spam e-mails from the unidentified senders;
  • sites supplying complimentary hosting;
  • P2P (peer-to-peer) torrent downloads.

There are times when the Qscx ransomware might disguise itself as some authentic application, for example, through the deceptive informs demanding setup of some software application update. This is the most common trick utilized by the scams to inject the Qscx virus files into the system. This way users partly take part in its installation, without clearly comprehending the threat.

Furthermore, the frauds may send unsolicited spam email with challenging informs motivating the people to open dubious accessories or click some download links, for example, those motivating the people to open particular photos, text files, tax documents and other information.

No doubt, opening these files or clicking the destructive links might essentially damage the system. Fake Acrobat Reader update alerts may cause the Qscx ransomware seepage. Likewise, downloading the split software may in addition consist of the ransomware installer. The last but not the least, installation of Qscx may take place through some Trojan horses that may be installed stealthily into the system and without the user’s direct authorization and even approval.

Preventing the Qscx attack.

Naturally, there is no absolute guarantee that your computer will be always free of any malware attacks, nevertheless, we want to share some helpful tips with you to make it much safer. Make certain to pay extremely attention while browsing the web and particularly while downloading cost-free programs. Do not open any suspicious email attachments, particularly if the sender is not known to you.

Do not forget that particular freeware installer may likewise consist of some other additional apps in the package. These extra applications may be extremely damaging. It is of utmost significance to keep your anti-virus software application and your os in basic to be constantly effectively updated.

It is quite rational that downloading cracked apps is prohibited, however, in addition, such unauthorized software application usage may likewise bring serious damage to your system. For this reason, do not download any cracked programs. Plus, the truth that your current anti-virus did not safeguard the system from the Qscx ransomware is a good factor for you to reevaluate your choices and change to another program that can render the protecting functions on a much better level.

Below please find the quotation from the Qscx text file:

 Don't worry, you can return all your files!
 All your files like photos, databases, documents 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 you have?
 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.
 You can get and look video overview decrypt tool:
 Price of private key and decrypt software is $980.
 Discount 50% available if you contact us first 72 hours, that's price for you is $490.
 Please note that you'll never restore your data without payment.
 Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours.
 To get this software you need write on our e-mail:
 Reserve e-mail address to contact us: 

 Our Telegram account:

Screenshot of files with “.qscx” extension added by the ransomware:”

Qscx Ransomware - encrypt files with .qscx extension

Use GridinSoft Anti-Malware to remove Qscx ransomware from your computer

1.Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

  GridinSoft Anti-Malware

2. Double-click on the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-ag.exe file to install GridinSoft Anti-Malware on your computer.
GridinSoft Anti-Malware
An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.
GridinSoft Anti-Malware Setup

3. Press Install button for run GridinSoft Anti-Malware.

GridinSoft Anti-Malware Install

3.Once installed, GridinSoft Anti-Malware will automatically run.

GridinSoft Anti-Malware  Start

4. Wait for the GridinSoft Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your computer for Win Speedup 2018 and other malicious programs. This process can take a 20-30 minutes, so we suggest you periodically check on the status of the scan process.
GridinSoft Anti-Malware Scan

5. Click on “Clean Now”.

When the scan has completed, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.
GridinSoft Anti-Malware Scan Result

Use Emsisoft Decryptor for restore qscx files

You can get Emsisoft Decryptor by clicking the button below:

  Emsisoft Decryptor

  1. Run the decryptor as an administrator. The license terms will show up, which you have to agree to by clicking the “Yes” button.
  2. Once the license terms are accepted, the primary decryptor user interface opens.
  3. By default, the decryptor will pre-populate the locations to decrypt with the currently connected drives and network drives. Additional locations can be added using the Add” button.
  4. Decryptors typically offer various options depending on the particular malware family. The available options are located in the Options tab and can be enabled or disabled there. You can find a detailed list of the available Options below.
  5. After you have added all the locations you want to decrypt to the list, click the “Decrypt” button to start the decryption process. The screen will switch to a status view, informing you about the current process and decryption status of your files
  6. The decryptor will inform you once the decryption process is finished. If you require the report for your personal records, you can save it by clicking the “Save log” button. You can also copy it straight to your clipboard to paste it into emails or forum posts if you are asked to.
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Daniel Zimmermann

Daniel Zimmermann has been writing on security and malware subjects for many years and has been working in the security industry for over 10 years. Daniel was educated at the Saarland University in Saarbrücken, Germany and currently lives in New York.

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  1. Error: No key for New Variant online ID: pZ8gvY6z8NhvnEkwUGgiV8PthWkJ4a82yDxQQIG1
    Notice: this ID appears to be an online ID, decryption is impossible

    Its doesn’t work

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