Djvu VirusRansomwareRemoval Guide

Orkf Virus Removal Guide (+Decrypt .orkf files)

Orkf – Ransomware

Orkf is a harmful software functioning as common ransomware. Michael Gillespie, the popular virus researcher, very first found this new name in the DJVU ransomware family.

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

The message mentioned by document asking for the random os really similar to the notifications offered by other ransomware dangers coming from the DJVU family. The warning essentially indicates that the files have been encrypted and the only solution to get access to it is to use an unique standalone key. Regretfully, this declaration is absolutely true.

The approach to secure the files utilized by Orkf is not entirely looked into. However, there is no doubt that each computer owner may be issued a special decryption key, which is definitely distinct. It is extremely difficult to recuperate the information without the suitable key in place.

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

message from Orkf virus

One more peculiarity of the Orkf virus is that the users are unable to get access to the key. The decrypting key is hosted on a special server under the complete control by the crooks who have released the Orkf virus into the internet. In order to get the key and restore the essential information, the users are told to connect with the frauds via email or by telegram and to pay the ransom in the quantity of $980.

The message likewise states that individuals need to contact the Orkf authors within 72 hours upon the moment of the data file encryption. The alert suggests that by doing so individuals will get a 50% discount, for that reason, the ransom amount drops down to $490.

No matter what the amount of the ransom is, we highly advise that you do not pay the ransom. There is no guarantee that these online scoundrels will keep their guarantees, 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 frequently does not result in a successful recovery. So, the users might just lose their money for absolutely nothing.

Similarly, we advise you not to contact the frauds as they instruct. Do not transfer cash into their wallets. There are no applications that could break the Orkf ransomware or restore the data at no charge. For that reason, the only appropriate choice is to bring back the data from possible backups (if offered).

Virus Summary

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

Do not forget that the Web is now full of infections similar to the Orkf ransomware. For example, this particular risk is basically identical to Brusaf and other ransomware-type infections. These destructive energies have been established in order to secure the crucial information and reveal the need for the users to pay the ransom. All these infections utilize the similar algorithm to generate the particular key for effective data decryption.

Unless the Orkf ransomware is still under the advancement procedure or has got some hidden bugs, it is not possible to restore the information manually. Hence, the only working service to avoid the loss of your crucial information is to routinely maintain up-to-date backups of all your vital data.

Another essential piece of guidance is to save the backups on unique storage not linked to your main device. For instance, you may 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 routine drive is really risky, considering that the backup might likewise be encrypted by the Orkf infection.

Leaks for the Orkf ransomware attack.

Orkf utilizes many courses to infiltrate the vulnerable computers. It is not particular what specific technique was used in your case, however, the invasion may happen through the following channels:

  • bundling with third-party programs, mainly freeware;
  • spam e-mails from the unknown senders;
  • websites providing free hosting;
  • P2P (peer-to-peer) torrent software.

There are times when the Orkf might camouflage itself as some genuine application, for example, through the deceptive alerts requiring setup of some software update. This is the most typical technique utilized by the scams to inject the Orkf virus files into the system. By doing this users partially take part in its setup, without clearly understanding the risk.

In addition, the frauds may send out unsolicited spam email with difficult signals encouraging individuals to open dubious accessories or click on some download links, for instance, those encouraging individuals to open specific images, text files, tax documents and other info.

No doubt, opening these files or clicking the destructive links may essentially harm the system. Fake Acrobat Reader upgrade notifications may lead to the Orkf ransomware seepage. Similarly, downloading the broken software may in addition contain the ransomware installer. The last however not the least, installation of Orkf might happen through some Trojan horses that may be installed stealthily into the system and without the user’s direct permission and even approval.

Avoiding the Orkf virus injection.

Of course, there is no outright warranty that your computer will be always free of any malware attacks, however, we would like to share some useful suggestions with you to make it much safer. Make sure to pay very attention while searching the web and particularly while getting cost-free programs. Do not open any dubious email attachments, 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 package. These additional applications might be really harmful. It is of utmost importance to keep your anti-virus software application and your operating system in general to be constantly correctly updated.

It is quite sensible that downloading cracked software is unlawful, however, additionally, such unauthorized apps usage may also bring serious damage to your system. Thus, do not download any split programs. Plus, the reality that your current anti-virus did not secure the system from the Orkf ransomware is a great reason for you to reconsider your options and change to another program that can render the safeguarding functions on a much better level.

Below please find the quotation from the Orkf 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 “.orkf” extension added by the ransomware:”

Orkf Ransomware - encrypt files with .orkf extension

Use GridinSoft Anti-Malware to remove Orkf 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 orkf 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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