.cube Files Virus - How to Remove It

.cube Files Virus – How to Remove It

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What is .cube files virus? Why can’t you open .cube files? How to remove .cube Major ransomware? How to restore files with the .cube extension?


.cube files virus is the name given to a data locker ransomware that is currently lurking across the web. As identified by security researchers, .cube virus belongs to the Major ransomware family. Since the main purpose of this threat is to extort a ransom from its victims, it is designed to encrypt valuable files with the help of a strong cipher algorithm. In case that this nasty ransomware has managed to infect your PC and data, you need to locate and remove all malicious files. Otherwise, you risk losing some of your most sensitive credentials. So be advised to keep up with our article and learn how to get rid of .cube ransomware with the help of reliable security measures.

Threat Summary

Name.cube files virus
TypeRansomware, Cryptovirus
Short DescriptionA data locker ransomware that encrypts valuable files stored on infected computers and then asks for a ransom fee for their decryption.
SymptomsImportant files are locked and renamed with the extension .cube. Ransom message asks for a ransom payment for their recovery.
Distribution MethodSpam Emails, Email Attachments
Detection Tool See If Your System Has Been Affected by .cube files virus


Malware Removal Tool

User ExperienceJoin Our Forum to Discuss .cube files virus.
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.

.cube Files Virus (Major Ransomware) – What is It All About?

A ransomware virus associated with the extension .cube has been spotted in the wild. Analyses of its samples indicate that it is a new strain of Major ransomware family. Currently, the threat is lurking across the web in active attack campaigns. There are several spread channels that are likely to be used for the distribution of .cube’s activation file. Among these techniques are malspam, malvertising, freeware packages, and corrupted web pages.

Massive spam email campaigns are believed to be preferred for the spread of .cube ransomware payload. Since the emails that are part of malspam campaigns aim to trick you into downloading the payload on your PC, they often pose as representatives of legitimate businesses and institutions. As of the malicious payload file, it could appear in the form of a file attachment or a URL address. So beware of every email you see in your inbox and always check the security level of the elements is presents.

When activated on your PC, the payload file of .cube files virus sets the beginning of the attack. At first, it could attempt to connect to a remote server in an attempt to transfer some gathered details and receive additional malicious files/commands as a response. With the help of these additional files, the ransomware becomes able to disrupt system security and perform a long sequence of malicious activities. As a result of some applied changes that affect the registry keys Run and RunOnce, .cube virus could start loading automatically on every next system start.

After all initial attack stages, the ransomware reaches the main one – data encryption. It realizes the encryption process with the help of the highly sophisticated encryption algorithm. Files it targets are likely to be:

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

Following the encryption process, the ransomware leaves all corrupted files inaccessible. It marks them with the extension .cube . Since the encryption process prevents you from accessing corrupted files, threat actors attempt to extort a ransom fee. For the purpose they use the following ransom message (READ_ME.cube):


I am truly sorry to inform you that all your important files are crypted.

If you want to recover your encrypted files you need to follow a few steps.

You need to buy bitcoins and send them to the address you receive by mail.

How to obtain Bitcoins

The easiest way to buy bitcoins is LocalBitcoins site.You have to register, click ‘Buy bitcoins’, and select the seller by payment method and price.


Also you can find other places to buy Bitcoins and beginners guide here:


write to Google how to buy Bitcoin in your country?

in order to guarantee the availability of our key

we can decrypt one file for free

the size of the files <1 mb, doc.docx.xls.xlsx.pdf.jpg.bmp.txt file formatother formats will not be free decryptionafter payment we will send a decryption programDo not try to decrypt your files with programs by the decoder,you will only damage your data and lose them forever.Only we can decrypt your data, write to the original mails specified in this file,otherwise you will become a victim of scammers.Contact email address [email protected] or [email protected]

Be advised to refrain from paying hackers the ransom as this action does not guarantee the recovery of your .cube files. Since the code of their threat may be full of bugs, their decrypter may not be working properly.

Remove .cube Files Virus and Attempt to Restore Data

The so-called .cube files virus is a threat with highly complex code designed to corrupt both system settings and valuable data. So the only way to use your infected system in a secure manner again is to remove all malicious files and objects created by the ransomware. For the purpose, you could use our removal guide that reveals how to clean and secure your system step by step. In addition, in the guide, you will find several alternative data recovery approaches that may be helpful in attempting to restore files encrypted by Major .cube ransomware. We remind you to back up all encrypted files to an external drive before the recovery process.

Gergana Ivanova

Gergana Ivanova

Gergana has completed a bachelor degree in Marketing from the University of National and World Economy. She has been with the STF team for three years, researching malware and reporting on the latest infections.

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