Home / Removal Guide / Ransomware / Djvu Virus / Kovasoh Virus Removal Guide (+Decrypt .kovasoh files) – DJVU Ransomware

Kovasoh Virus Removal Guide (+Decrypt .kovasoh files) – DJVU Ransomware

Kovasoh – Ransomware

The Kovasoh mean a ransomware-type infection. Initially, it was revealed by Michael Gillespie. The virus comes from the DJVU ransomware family. Kovasoh was elaborated specifically to encrypt all major file types. As soon as the file is encrypted people are not able to use them. Kovasoh adds the “.kovasoh” extension for each file encrypted by it. For example, the file “myphoto.jpg“, as soon as encrypted by Kovasoh, will be renamed into “myphoto.jpg.kovasoh. As quickly as the encryption is finished, Kovasoh places a special text file (such as “_readme.txt“) into every folder containing the encrypted data.

The message given by Kovasoh text file asking for the ransom is definitely the same as the statements given by other ransomware representatives coming from the DJVU family. It literally discusses that the info is encrypted and that the only way to bring back it is to use a a distinct decryption key. Sadly, this is absolutely true. The sort of cryptography mechanism applied by Kovasoh is still not appropriately examined. Still, it is absolutely particular that each victim may be given the specific decryption key, which is completely distinct. It is impossible to bring back the files without the key available.

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

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

Another trick of Kovasoh is that the victims cannot get to the key. The key is stored on a specific server run by the frauds connected with Kovasoh ransomware. To get the key and recover the important info people have to pay the ransom, which amounts to $980. To acquire the payment details users are advised to contact the frauds through e-mail or telegram. The alert likewise shows that the users need to contact the Kovasoh developers within 72 hours after the encryption occurred. The message says that doing so users will get a 50% discount, so the ransom amount will fall to $490.

Nonetheless, irrespective of the asked for quantity, people must stay away from paying the virus. Cyber frauds are unfair, so they tend to completely disregard what their victims feel about the problem, even when the payment reaches their pockets. This is why paying the ransom usually does not give any positive result and people just lose their money for absolutely nothing.

We strongly encourage that you do not contact these crooks and absolutely do not transfer money into their accounts. It is said to admit that there are no utilities able to crack Kovasoh ransomware and to recover the information data totally free. Therefore, the only best decision is to recover the lost data from the available backup.

Virus Summary

Name Kovasoh Ransomware
File Extension kovasoh
Type Ransomware
Family DJVU
Short Description The 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.
Symptoms File encryption by the ransomware is performed by means of the RSA-1024 encryption algorithm. Once the encryption is completed, the ransomware adds its special kovasoh extension to all the files modified by it.
Distribution Method Adware bundles and software cracks
Similar Infections Cosakos, Nvetud, Mogranos
Removal Tool   GridinSoft Anti-Malware

Keep in mind that the world wide web is now overwhelmed with threats that look similar to Kovasoh ransomware. It is similar Cosakos and many other ransomware-type threats. Malicious programs of such kind are typically elaborated to encrypt important data and to state the demand prior to the user to pay the ransom. The peculiarity of all such ransomware threats is that all apply a comparable algorithm to generate the special decryption key for data decryption.

Therefore, as long as the ransomware is still being developed or has some hidden bugs, manually recovering the information is simply not feasible. The only way to prevent the loss of your essential information is to frequently create backups of your important information.

Keep in mind that even if you create such backups, they need to be put into a special storage utility not connect to your main PC. You may use the USB Memory Stick or external hard drive for this purpose, or refer to the help of the cloud storage. If you save your backup files on your common system they may be encrypted in addition to other files, so it’s definitely not a good storage location.

How did ransomware infect my system?

There are numerous methods used by online scams to distribute Kovasoh ransomware. Despite the fact that it doubts how precisely Kovasoh injects your PC, there are some leaks through which it may penetrate the system:

  • integration with third-party software application, especially freeware;
  • spam e-mails from unknown senders;
  • sites rendering free hosting services;
  • pirated peer-to-peer (P2P) downloads.

Frequently Kovasoh ransomware may exist as some legitimate software application, for example, in the pop-ups advising users to execute some essential software updates. This is the common trick used by online scams to persuade people into downloading and installing Kovasoh infection manually, by ways of their direct participation in the installation process.

In addition, the criminals may describe numerous email spam tactics to inject destructive codes into Windows PC. So, they may refer to to sending unsolicited spam emails with tricky notifications promoting users to download the attachments or click on certain download links, for example, the ones motivating users to open some photos, files, tax reports or invoices.

Needless to mention, opening such documents or clicking on such dangerous links may severely harm the PC. Fictitious Adobe Flash Player upgrade notifies may result in Kovasoh ransom injection. As for the cracked software, these illegally downloaded programs may also contain malicious codes leading to Kovasoh secret installation. Finally, injection of Kovasoh may occur by means of Trojans that privately get injected into the system and set up destructive utilities without the user’s authorization.

Is there any method to prevent the injection of Kovasoh ransom virus?

Despite the fact that there is no 100% guarantee to avoid your system from getting infected, there are some pieces of advice we wish to share with with you. To start with, be really cautious when you browse the web and especially while downloading free programs. Keep away from opening suspicious email attachments, especially when the sender of the email is not familiar to you.

Remember that some freeware installers may include other unwanted utilities in the bundle, so they may be harmful. Ensure that your current antivirus and your entire OS is always appropriately updated.

Naturally, downloading pirated software is illegal and may result in necessary damage to be produced your system. Hence, stay away from downloading cracked software. You are likewise highly recommended to reconsider your existing security software and perhaps switch to another security solution that can render better services of protecting your system.

Below please find the quotation from the Kovasoh text file:

ATTENTION!
 
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:
https://we.tl/t-hvv30uAtTY
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:
gorentos@bitmessage.ch
 
Reserve e-mail address to contact us:
ferast@firemail.cc
 
Our Telegram account:
@datarestore

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

Kovasoh Ransomware - encrypt files with .kovasoh extension

Use GridinSoft Anti-Malware to remove Kovasoh 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

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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.

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