Djvu VirusRansomwareRemoval Guide

Vvoa Virus Removal Guide (+Decrypt .vvoa files)

Vvoa Virus – Details

Vvoa is a harmful software working as typical ransomware. Michael Gillespie, the well-known virus researcher, first discovered this new name in the DJVU ransomware family.

Vvoa was created for the sole purpose to encrypt all popular file types. Logically, as soon as the encryption is successfully accomplished, the users are not able to get access to them. Vvoa ransomware adds its own “.vvoa” to all the encrypted data. For instance, the file “price_list.xls”, once modified by Vvoa, will be titled as “price_list.xls.vvoa”. As soon as the encryption is accomplished, Vvoa puts its own unique text file (_readme.txt) into all the folders that save the encrypted files.

The message mentioned by _readme.txt asking for the random os extremely comparable to the alerts provided by other ransomware hazards belonging to the DJVU family. The warning generally shows that the files have been encrypted and the only option to get access to it is to use a special standalone key. Regretfully, this statement is definitely true.

The technique to encrypt the files utilized by Vvoa is not totally looked into. Nevertheless, there is no doubt that each computer owner might be issued a special decryption key, which is definitely unique. It is incredibly hard to recover the data without the suitable type in place.

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

message from Vvoa virus

One more peculiarity of the Vvoa virus is that the users are not able to get access to the key. The decrypting key is hosted on a special server under the complete control by the scoundrels who have introduced the Vvoa infection into the world wide web. In order to get the key and bring back the essential information, the users are told to contact the scams through email or by telegram and to pay the ransom in the quantity of $980.

The message likewise says that individuals should get in touch with the Vvoa authors within 72 hours upon the minute of the data file encryption. The alert indicates that by doing so the people will obtain a 50% discount rate, therefore, the ransom amount drops down to $490.

No matter what the amount of the ransom is, we strongly encourage that you do not pay the ransom. There is no assurance that these online scoundrels will keep their promises, so they might not care at all what the victims feel about the file encryption, even when the quantity of the ransom is gotten into their accounts. Hence, paying ransom often does not result in an effective healing. So, the users might merely lose their money for absolutely nothing.

Likewise, we urge you not to contact the frauds as they instruct. Do not transfer cash into their wallets. There are no applications that might split the Vvoa ransomware or restore the data for free. For that reason, the only right decision is to restore the information from possible backups (if readily available).

Virus Summary

NameVvoa Ransomware
File Extensionvvoa
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 .vvoa extension to all the files modified by it.
Distribution MethodAdware bundles and software cracks
Similar InfectionsAgho, Vpsh, Jdyi
Vvoa Removal Tool   GridinSoft Anti-Malware
Vvoa Decryption Tool   Emsisoft Djvu Decryptor

Do not forget that the Web is now full of infections comparable to the Vvoa ransomware. For instance, this specific hazard is generally similar to Brusaf and other ransomware-type infections. These damaging utilities have actually been established in order to encrypt the important data and express the need for the users to pay the ransom. All these infections use the similar algorithm to create the specific key for effective information decryption.

Unless the Vvoa ransomware is still under the advancement process or has got some hidden bugs, it is not possible to restore the data by hand. Hence, the only working solution to avoid the loss of your essential information is to regularly preserve up-to-date backups of all your crucial data.

Another crucial piece of guidance is to keep the backups on special storage not linked to your primary device. For instance, you might store it on the USB Flash Drive, or some external drive, or by using the cloud data storage services. Keeping the backups on your routine drive is very risky, considering that the backup might likewise be secured by the Vvoa .

Leakages for the Vvoa ransomware attack.

Vvoa utilizes numerous courses to infiltrate the vulnerable computer systems. It is not particular what particular method was used in your case, nevertheless, the invasion might take place via the following channels:

  • bundling with third-party programs, primarily free software;
  • spam emails from the unknown senders;
  • websites supplying complimentary hosting;
  • P2P (peer-to-peer) torrent downloads.

There are times when the Vvoa virus might disguise itself as some authentic application, for example, through the deceptive informs demanding installation of some software application update. This is the most common technique used by the frauds to inject the Vvoa ransomware files into the system. This way users partially take part in its setup, without clearly understanding the risk.

Moreover, the frauds may send out unsolicited spam email with challenging notifies motivating individuals to open dubious accessories or click on some download links, for example, those encouraging the people to open particular pictures, text files, tax files and other info.

No doubt, opening these files or clicking the harmful links may basically damage the system. Fake Media Player upgrade alerts may result in the Vvoa ransomware infiltration. Likewise, downloading the cracked software application might additionally contain the ransomware installer. The last however not the least, installation of Vvoa might occur through some Trojan horses that might be set up stealthily into the system and without the user’s direct approval or even permission.

Avoiding the Vvoa virus injection.

Of course, there is no outright assurance that your computer system will be always free of any malware attacks, nevertheless, we want to share some useful ideas with you to make it more secure. Ensure to pay really close attention while searching the web and especially while getting cost-free programs. Do not open any suspicious email accessories, particularly if the sender is not understood to you.

Do not forget that certain freeware installer may likewise consist of some other additional apps in the bundle. These additional applications may be really harmful. It is of utmost value to keep your anti-virus software application and your os in general to be constantly effectively upgraded.

It is rather sensible that downloading cracked apps is prohibited, however, additionally, such unauthorized software application use might likewise bring serious damage to your PC. For this reason, do not download any broken programs. Plus, the reality that your existing anti-virus did not protect the system from the Vvoa ransomware is a good reason 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 Vvoa 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 “.vvoa” extension added by the ransomware:”

Vvoa Ransomware - encrypt files with .vvoa extension

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

1.Download GridinSoft Anti-Malware.

You can get 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 vvoa 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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