What is Dkrf Ransomware

EmsiSoft company has managed to create his decoder for some versions and variants of STOP Ransomware, when the encryption tool uses an offline key for encryption. Tool is called STOP Djvu Decryptor and can be downloaded below.

Dkrf Ransomware (belongs to the family of STOP Ransomware or Djvu Ransomware) is high-risk file-encrypting virus, that affects Windows systems. In the beginning of July 2022, the new generation of this malware started encoding files using .dkrf extensions. Virus targets important and valuable file types such as photos, documents, videos, archives, encrypted files become unusable. Ransomware puts _readme.txt file, that is called “ransom note” or “ransom-demanding note” on the desktop and in the folders with encrypted files. Developers use the following e-mails for contact: support@bestyourmail.ch and supportsys@airmail.cc. Below is the full content of those ransom notes:

STOP Ransomware (.dkrf extensions)
ATTENTION!
Don't worry, you can return all your files!
All your files like pictures, 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:
hxxps://we.tl/t-5JlAL7HXIu
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:
support@bestyourmail.ch
Reserve e-mail address to contact us:
supportsys@airmail.cc
Your personal ID:
{random-44-character-alphanumeric-id}

Hackers demand $980 for the decryption of your files (the message states, that victims will get a 50% discount if they’ll contact cybercriminals within 72 hours after the encryption). According to many reports, malefactors often don’t reply to victims, when they receive ransom payment. We strongly do not recommend paying any money. Files encrypted by some versions of Dkrf Ransomware can be decrypted with help of STOP Djvu Decryptor. Dkrf Ransomware was programmed to send decryption keys to a remote server. However, if your system has no Internet connection or the server was not responding, then ransomware is using the so-called “offline key”. That is where STOP Djvu Decryptor will help. Before using the utility, you need to kill the active process and remove Dkrf Ransomware. We’d also recommend getting an efficient anti-malware program. Most effective applications are: Emsisoft Anti-Malware and Malwarebytes Anti-Malware. We provide you with a guidebook to remove Dkrf Ransomware and tips to decrypt or restore .dkrf files in Windows 10, Windows 8, and Windows 7.

dkrf ransomware

How Dkrf Ransomware infected your computer

  1. Download Dkrf Ransomware Removal Tool
  2. Get decryption tool for .dkrf files
  3. Recover encrypted files with Stellar Data Recovery Professional
  4. Restore encrypted files with Windows Previous Versions
  5. Restore files with Shadow Explorer
  6. How to protect from threats like Dkrf Ransomware

Virus modifies “hosts” file to block Windows updates, downloading antivirus programs, and visiting sites related to security news or offering security solutions. Dkrf Ransomware comes along with AZORult trojan, which was initially created to steal logins and passwords. The process of infection also looks like installing Windows updates, the malware shows a fake window, that mimics the update process.

fake windows update from Dkrf Ransomware

It uses rdpclip.exe to replace a legal Windows file and to launch an attack on a computer network. After encrypting the files, the encrypter is deleted using the delself.bat command file. Dkrf Ransomware virus is propagated via spam attack with malicious e-mail attachments and using manual PC hacking. Can be distributed by hacking through an unprotected RDP configuration, fraudulent downloads, exploits, web injections, fake updates, repackaged, and infected installers. The virus assigns a certain ID to the victims, which is used to name those files and supposedly to send a decryption key. Great tools to protect against Dkrf Ransomware are: Emsisoft Anti-Malware and Malwarebytes Anti-Malware.

Download Dkrf Ransomware Removal Tool

Download Removal Tool

To remove Dkrf Ransomware completely, we recommend you to use SpyHunter 5 from EnigmaSoft Limited. It detects and removes all files, folders, and registry keys of Dkrf Ransomware. The trial version of SpyHunter 5 offers virus scan and 1-time removal for FREE.

Alternative Removal Tool

Download Malwarebytes

To remove Dkrf Ransomware completely, we recommend you to use Malwarebytes Antimalware. It detects and removes all files, folders, and registry keys of Dkrf Ransomware and prevents future infections by similar viruses.

How to remove Dkrf Ransomware manually

It is not recommended to remove Dkrf Ransomware manually, for safer solution use Removal Tools instead.

Dkrf Ransomware files:

_readme.txt
rdpclip.exe
delself.bat
{randomname}.exe

Dkrf Ransomware registry keys:

no information

How to decrypt and restore .dkrf files

Use automated decryptors

Download STOP Djvu Decryptor from EmsiSoft (.dkrf variations)

IMPORTANT: Read this detailed guide on using STOP Djvu Decryptor to avoid file corruption and time wasting.

STOP djvu ransomware decryptor from emsisoft

STOP Djvu Decryptor is able to decrypt .dkrf files, encrypted by Dkrf Ransomware. This tool was developed by EmsiSoft. It works in automatic mode, but in most cases works only for files encrypted with offline keys. Download it here:

Download STOP Djvu Decryptor

Dr.Web Rescue Pack

Famous antivirus vendor Dr. Web provides free decryption service for the owners of its products: Dr.Web Security Space or Dr.Web Enterprise Security Suite. Other users can ask for help in the decryption of .dkrf files by uploading samples to Dr. Web Ransomware Decryption Service. Analysis of files will be performed free of charge and if files are decryptable, all you need to do is purchase a 2-year license of Dr.Web Security Space worth $120 or less. Otherwise, you don’t have to pay.

If you are infected with Dkrf Ransomware and removed from your computer, you can try decrypting your files. Antivirus vendors and individuals create free decryptors for some crypto-lockers. To attempt to decrypt them manually you can do the following:

Use Stellar Data Recovery Professional to restore .dkrf files

stellar data recovery professional

  1. Download Stellar Data Recovery Professional.
  2. Click Recover Data button.
  3. Select type of files you want to restore and click Next button.
  4. Choose location where you would like to restore files from and click Scan button.
  5. Preview found files, choose ones you will restore and click Recover.
Download Stellar Data Recovery Professional

Using Windows Previous Versions option:

  1. Right-click on infected file and choose Properties.
  2. Select Previous Versions tab.
  3. Choose particular version of the file and click Copy.
  4. To restore the selected file and replace the existing one, click on the Restore button.
  5. In case there is no items in the list choose alternative method.

Using Shadow Explorer:

  1. Download Shadow Explorer program.
  2. Run it and you will see screen listing of all the drives and the dates that shadow copy was created.
  3. Select the drive and date that you want to restore from.
  4. Right-click on a folder name and select Export.
  5. In case there are no other dates in the list, choose alternative method.

If you are using Dropbox:

  1. Login to the DropBox website and go to the folder that contains encrypted files.
  2. Right-click on the encrypted file and select Previous Versions.
  3. Select the version of the file you wish to restore and click on the Restore button.

How to protect computer from viruses, like Dkrf Ransomware, in future

1. Get special anti-ransomware software

Use ZoneAlarm Anti-Ransomware

Famous antivirus brand ZoneAlarm by Check Point released a comprehensive tool, that will help you with active anti-ransomware protection, as an additional shield to your current protection. The tool provides Zero-Day protection against ransomware and allows you to recover files. ZoneAlarm Anti-Ransomware is compatible with all other antiviruses, firewalls, and security software except ZoneAlarm Extreme (already shipped with ZoneAlarm Anti-Ransomware) or Check Point Endpoint products. The killer features of this application are: automatic file recovery, overwrite protection that instantly and automatically recovers any encrypted files and file protection that detects and blocks even unknown encryptors.

Download ZoneAlarm Anti-Ransomware

2. Back up your files

idrive backup

As an additional way to save your files, we recommend online backup. Local storage, such as hard drives, SSDs, flash drives, or remote network storage can be instantly infected by the virus once plugged in or connected to. Dkrf Ransomware uses some techniques to exploit this. One of the best services and programs for easy automatic online backup is iDrive. It has the most profitable terms and a simple interface. You can read more about iDrive cloud backup and storage here.

3. Do not open spam e-mails and protect your mailbox

mailwasher pro

Malicious attachments to spam or phishing e-mails are the most popular method of ransomware distribution. Using spam filters and creating anti-spam rules is good practice. One of the world leaders in anti-spam protection is MailWasher Pro. It works with various desktop applications and provides a very high level of anti-spam protection.

Download MailWasher Pro
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