Kvag Virus Removal Guide (+Decrypt .kvag files)

Kvag – General Info

Kvag is a malicious software functioning as common ransomware. Michael Gillespie, the widely known malware researcher, very first discovered this new name in the DJVU ransomware family.

Kvag was developed for the sole purpose to encrypt all popular file types. Rationally, as quickly as the encryption is effectively accomplished, the users are not able to get access to them. Kvag virus includes its own “.kvag” to all the encrypted files. For example, the file “price_list.xls”, as soon as crypted by Kvag, will be titled as “price_list.xls.kvag”. Once the encryption is accomplished, Kvag puts its own special text document (_readme.txt) into all the folders that keep the encrypted files.

The message mentioned by _readme.txt requesting the random os very comparable to the alerts given by other ransomware dangers belonging to the DJVU family. The warning generally shows that the data has been secured and the only solution to get access to it is to use an unique standalone key. Regretfully, this declaration is absolutely true.

The technique to secure the files utilized by Kvag is not completely investigated. However, there is no doubt that each computer system owner might be provided a special decryption key, which is absolutely unique. It is exceptionally difficult to recover the data without the suitable type in place.

“Don’t worry, you can return all your files!”, from text file message:

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

One more peculiarity of the Kvag 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 released the Kvag ransomware into the internet. In order to get the key and restore the important data, the users are informed to get in touch with the frauds through email or by telegram and to pay the ransom in the quantity of $980.

The message likewise states that individuals should get in touch with the Kvag authors within 72 hours upon the moment of the information file encryption. The alert shows that by doing so the people will obtain a 50% discount, therefore, the ransom quantity drops down to $490.

No matter what the amount of the ransom is, we highly recommend that you do not pay the ransom. There is no guarantee that these online crooks will keep their guarantees, so they might not care at all what the victims feel about the encryption, even when the amount of the ransom is received into their accounts. For this reason, paying ransom often does not result in an effective healing. So, the users might simply lose their money for nothing.

Likewise, we prompt you not to call the frauds as they advise. Do not move cash into their wallets. There are no applications that might crack the Kvag ransomware or bring back the data at no charge. Therefore, the only proper choice is to restore the information from possible backups (if readily available).

Virus Summary

NameKvag Ransomware
File Extensionkvag
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-556 algorithm (CFB mode) encryption algorithm. Once the encryption is completed, the ransomware adds its special .kvag extension to all the files modified by it.
Distribution MethodAdware bundles and software cracks
Similar InfectionsMeds, Moka, Peta
Removal Tool   GridinSoft Anti-Malware

Do not forget that the Web is now filled with infections comparable to the Kvag virus. For example, this specific threat is essentially similar to Brusaf and other ransomware-type infections. These damaging energies have been developed in order to encrypt the crucial data and reveal the need for the users to pay the ransom. All these infections utilize the similar algorithm to produce the particular key for successful files decryption.

Unless the Kvag ransomware is still under the development procedure or has actually got some hidden bugs, it is not possible to restore the information manually. Hence, the only working option to avoid the loss of your important data is to frequently preserve updated backups of all your essential files.

Another essential piece of recommendations is to keep the backups on unique storage not linked to your primary device. For example, you might save it on the USB Flash Drive, or some external drive, or by using the cloud data storage services. Keeping the backups on your regular drive is really dangerous, because the backup may likewise be encrypted by the Kvag .

Leakages for the Kvag ransomware attack.

Kvag uses many courses to penetrate the susceptible computers. It is not certain what specific method was used in your case, however, the intrusion might happen via the following channels:

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

There are times when the Kvag might disguise itself as some genuine application, for example, through the deceptive informs requiring setup of some software upgrade. This is the most typical technique used by the scams to inject the Kvag virus files into the system. This way users partially participate in its installation, without clearly understanding the danger.

Furthermore, the frauds may send out unsolicited spam email with challenging signals encouraging individuals to open dubious attachments or click on some download links, for example, those encouraging the people to open specific photos, text files, tax documents and other information.

No doubt, opening these files or clicking on the destructive links may essentially harm the system. Fake Acrobat Reader upgrade notices may lead to the Kvag ransomware infiltration. Similarly, downloading the broken software might additionally include the ransomware installer. The last however not the least, setup of Kvag may take place through some Trojan horses that may be installed stealthily into the system and without the user’s direct consent and even authorization.

Preventing the Kvag ransomware injection.

Of course, there is no absolute guarantee that your computer will be always devoid of any malware attacks, however, we would like to share some useful ideas with you to make it much safer. Make certain to pay extremely very close attention while browsing the web and especially while downloading cost-free programs. Do not open any suspicious e-mail accessories, particularly if the sender is not understood to you.

Do not forget that certain freeware installer may also contain some other extra apps in the bundle. These additional applications might be really damaging. It is of utmost value to keep your anti-virus software application and your operating system in basic to be constantly appropriately updated.

It is quite rational that downloading pirated apps is unlawful, nevertheless, additionally, such unauthorized programs use might likewise bring severe damage to your system. For this reason, do not download any broken programs. Plus, the fact that your present anti-virus did not protect the system from the Kvag ransomware is a great reason for you to reassess your choices and change to another program that can render the securing functions on a far better level.

Below please find the quotation from the Kvag 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 “.kvag” extension added by the virus:”

Kvag Ransomware - encrypt files with .kvag extension

Use GridinSoft Anti-Malware to remove Kvag 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

User Review
0 (0 votes)
Comments Rating 0 (0 reviews)

About 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.

Check Also

How to uninstall RocketFixio

RocketFixio is a security app from rogue software family. When installed on the your PC, …

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.