Remove Kristina Ransomware - Restore .crypt12 Files

Remove Kristina Ransomware – Restore .crypt12 Files

This article will aid you to remove Kristina ransomware effectively. Follow the ransomware removal instructions given below in the article.

Kristina is a ransomware virus that encrypts your files, while also appends the .crypt12 extension to them. The Kristina virus displays a ransom note message which opens in a GUI window. You are demanded to pay a ransom to supposedly restore your data. The virus is also known as “KristinaCS” or “Kristina Crypto System” and discovered to be a variant of the .Crypt12 File Ransomware. Continue to read below to see how you could try to potentially recover some of your files.

Threat Summary

TypeRansomware, Cryptovirus
Short DescriptionThe ransomware encrypts files on your computer and demands a ransom sum to be paid to supposedly restore your files back to normal.
SymptomsThe ransomware will encrypt your files, while placing the .crypt12 extension to them, and also display a GUI window with a ransom message and a list of encrypted files.
Distribution MethodSpam Emails, Email Attachments
Detection Tool See If Your System Has Been Affected by Kristina


Malware Removal Tool

User ExperienceJoin Our Forum to Discuss Kristina.
Data Recovery ToolWindows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive.

Kristina Ransomware – Infection

Kristina ransomware might spread its infection with various methods. A payload dropper which initiates the malicious script for this ransomware is being spread around the World Wide Web, and researchers have gotten their hands on a malware sample. If that file lands on your computer system and you somehow execute it – your computer system will become infected. You can see the detections of such a file on the VirusTotal service right down here:

Kristina ransomware might also distribute its payload file on social media and file-sharing services. Freeware which is found on the Web can be presented as helpful also be hiding the malicious script for the cryptovirus. Refrain from opening files right after you have downloaded them. You should first scan them with a security tool, while also checking their size and signatures for anything that seems out of the ordinary. You should read the tips for preventing ransomware found in the forum section.

Kristina Ransomware – Analysis

Kristina is a virus that encrypts your files and extorts you to pay a ransom to supposedly recover them. The virus is also known as “KristinaCS” or “Kristina Crypto System” and discovered to be a variant of the .Crypt12 File Ransomware.

Kristina ransomware might make entries in the Windows Registry to achieve persistence, and could launch or repress processes in a Windows environment. Such entries are typically designed in a way to launch the virus automatically with each start of the Windows Operating System.

A ransom message is displayed in a GUI window after the encryption of your files is complete. You can view that window screen (named KristinaCS L 1.2) from the following screenshot, right down below:

The window shows what files are encrypted.

The actual ransom note states the following:

Your files Have Been Crypted email to: [email protected] for instructions;

That note can also be seen as your new Desktop image as red text on a black background:

The note of the Kristina ransomware states that your files are encrypted. You are demanded contact an email address, on which you will be told what sum you have to pay as ransom for your data. However, you should NOT under any circumstances pay any ransom. Your files may not get recovered, and nobody could give you a guarantee for that. Moreover, giving money to cybercriminals will most likely motivate them to create more ransomware viruses or commit different criminal activities.

Kristina Ransomware – Encryption

As you can imagine, similar to the .Crypt12 File Virus, the Kristina ransomware places the .crypt12 extension to all locked files, but before that it includes the ID of the victim and the malware developers email, separated with dashes. An example of a full name with the appended extension for a locked file would be “[email protected]”. The encryption algorithm used by the virus is currently unknown.

The targeted extensions of files which are sought to get encrypted are currently unknown and if a list is discovered, it will be posted here as the article gets updated. The files used most by users and which are probably encrypted are from the following categories:

  • Audio files
  • Video files
  • Document files
  • Image files
  • Backup files
  • Banking credentials, etc

The Kristina cryptovirus could be set to erase all the Shadow Volume Copies from the Windows operating system with the help of the following command:

→vssadmin.exe delete shadows /all /Quiet

In case the above-stated command is executed that will make the encryption process more efficient. That is due to the fact that the command eliminates one of the prominent ways to restore your data. If your computer device was infected with this ransomware and your files are locked, read on through to find out how you could potentially restore your files back to normal.

Remove Kristina Ransomware and Restore .crypt12 Files

If your computer got infected with the Kristina ransomware virus, you should have a bit of experience in removing malware. You should get rid of this ransomware as quickly as possible before it can have the chance to spread further and infect other computers. You should remove the ransomware and follow the step-by-step instructions guide provided below.

Berta Bilbao

Berta is a dedicated malware researcher, dreaming for a more secure cyber space. Her fascination with IT security began a few years ago when a malware locked her out of her own computer.

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