Djvu VirusRansomwareRemoval Guide

Gyza Virus Removal Guide (+Decrypt .gyza files)

Gyza Virus Ransomware

Gyza is a destructive software working as common ransomware. Michael Gillespie, the well-known virus researcher, very first discovered this new name in the DJVU ransomware family.

Gyza was developed for the sole purpose to encrypt all popular file types. Logically, as quickly as the file encryption is effectively accomplished, the users are unable to get access to them. Gyza virus adds its own “.gyza” to all the encrypted files. For example, the file “price_list.xls”, once modified by Gyza, will be entitled as “price_list.xls.gyza”. As soon as the file encryption is achieved, Gyza puts its own unique text file (_readme.txt) into all the folders that save the encrypted files.

The alert stated by _readme.txt requesting for the random os really comparable to the alerts offered by other ransomware hazards belonging to the DJVU family. The caution essentially indicates that the data has been encrypted and the only solution to get access to it is to use a distinct standalone key. Regretfully, this statement is definitely real.

The method to secure the files used by Gyza is not totally investigated. However, there is no doubt that each computer system owner might be released a special decryption key, which is definitely unique. It is exceptionally tough to recover the data 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 Gyza infection is that the users are unable to get access to the key. The decrypting key is hosted on an unique server under the complete control by the scoundrels who have actually introduced the Gyza ransomware into the internet. In order to get the key and bring back the essential information, the users are informed to get in touch with the frauds by means of email or by telegram and to pay the ransom in the amount of $980.

The message likewise says that individuals need to call the Gyza authors within 72 hours upon the moment of the information file encryption. The alert suggests that by doing so individuals will obtain a 50% discount, therefore, the ransom quantity falls to $490.

No matter what the quantity of the ransom is, we strongly recommend that you do not pay the ransom. There is no guarantee that these online criminals will keep their promises, so they may not care at all what the victims feel about the encryption, even when the quantity of the ransom is received into their accounts. Hence, paying ransom often does not result in an effective healing. So, the users may simply lose their money for nothing.

Similarly, we prompt you not to contact the scams as they instruct. Do not move loan into their wallets. There are no applications that could split the Gyza virus or restore the information at no cost. Therefore, the only proper choice is to bring back the data from possible backups (if readily available).

Virus Summary

NameGyza Ransomware
File Extensiongyza
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 .gyza extension to all the files modified by it.
Distribution MethodAdware bundles and software cracks
Similar InfectionsLokas, Besub, Nusar
Gyza Removal Tool   GridinSoft Anti-Malware
Gyza Decryption Tool   Emsisoft Djvu Decryptor

Do not forget that the Web is now filled with infections similar to the Gyza virus. For instance, this particular hazard is generally identical to Brusaf and other ransomware-type infections. These harmful utilities have actually been established in order to encrypt the important information and express the demand for the users to pay the ransom. All these infections utilize the identical algorithm to create the specific key for effective files decryption.

Unless the Gyza ransomware is still under the development process or has got some concealed bugs, it is not possible to restore the information manually. Hence, the only working service to avoid the loss of your crucial data is to regularly maintain updated backups of all your important documents.

Another important piece of advice is to keep the backups on unique storage not linked to your primary computer. For instance, you might store 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 regular drive is extremely dangerous, because the backup might also be encrypted by the Gyza ransomware.

Leaks for the Gyza ransomware attack.

Gyza uses lots of paths to infiltrate the vulnerable computer systems. It is not particular what specific method was used in your case, however, the intrusion may take place by means of the following channels:

  • bundling with third-party programs, mainly free software;
  • spam emails from the unknown senders;
  • sites providing complimentary hosting;
  • P2P (peer-to-peer) torrent software.

There are times when the Gyza might camouflage itself as some real application, for example, through the deceptive signals requiring setup of some software application update. This is the most common trick used by the frauds to inject the Gyza infection files into the system. In this manner users partially participate in its setup, without plainly comprehending the threat.

In addition, the scams might send unsolicited spam e-mail with difficult signals encouraging individuals to open dubious accessories or click some download links, for example, those encouraging individuals to open specific pictures, text files, tax documents and other info.

No doubt, opening these files or clicking on the harmful links may essentially damage the system. Fake Media Player upgrade notifications may lead to the Gyza ransomware seepage. Likewise, downloading the split software may additionally include the ransomware installer. The last but not the least, setup of Gyza may take place through some Trojan horses that may be set up stealthily into the system and without the user’s direct authorization and even consent.

Avoiding the Gyza injection.

Obviously, there is no outright guarantee that your computer will be constantly without any malware attacks, however, we want to share some useful ideas with you to make it safer. Make certain to pay really very close attention while searching the web and specifically while getting cost-free programs. Do not open any dubious email attachments, particularly if the sender is not known to you.

Do not forget that particular freeware installer might also consist of some other additional apps in the package. These additional applications may be really damaging. It is of utmost significance to keep your anti-virus software application and your operating system in general to be constantly effectively upgraded.

It is rather rational that downloading pirated software is prohibited, nevertheless, additionally, such unapproved software application use may also bring major damage to your system. Hence, do not download any broken programs. Plus, the truth that your present anti-virus did not protect the system from the Gyza ransomware is a good factor for you to reconsider your choices and change to another program that can render the securing functions on a better level.

Below please find the quotation from the Gyza 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 “.gyza” extension added by the ransomware:”

Gyza Ransomware - encrypt files with .gyza extension

Use GridinSoft Anti-Malware to remove Gyza 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 gyza files

You can download 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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