.CORP Files Virus (Paradise) - How to Remove It

.CORP Files Virus (Paradise) – How to Remove It

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CORP files virus Paradise ransomware ransom note sensorstechforum removal guide

This article explains the issues that occur in case of infection with .CORP files virus and provides a complete guide on how to remove malicious files and potentially recover files encrypted by this ransomware.

A ransomware strain of Paradise family dubbed .CORP files virus has been spotted in the wild. An infection with this nasty threat leads to the corruption of valuable files all of which could be recognized by the extension .CROP appended to their names. The goal of this ransomware is extortion of a ransom payment.

Threat Summary

Name.CORP Files Virus
TypeRansomware, Cryptovirus
Short DescriptionA data locker ransomware that utilizes strong cihper algorithm to encrypt files so it can demand a ransom for thier decryption.
SymptomsImportant files are locked and renamed with .CORP extension. They cannot be opened.
Distribution MethodSpam Emails, Email Attachments
Detection Tool See If Your System Has Been Affected by .CORP Files Virus


Malware Removal Tool

User ExperienceJoin Our Forum to Discuss .CORP 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.

.CORP Files Virus – Distribution

There are several spread techniques that are probably used for the distribution of .CORP ransomware. Malsam is one of those techniques. It is used by hackers for the spread of malicious code via massive email campaigns. They usually embed their malware in files of common types and attach these files to email messages. In addition, emails are often disguised as legitimate businesses or services.

The last could be explained by the fact that their purpose is to trick you into opening the corrupted file on your device as this action triggers the execution of ransomware payload. A variety of common file types such as documents, PDFs, images could be transformed into carriers of ransomware code.

These files are often presented as the following:

  • Invoices coming from reputable sites, like PayPal, eBay, etc.
  • Documents from that appear to be sent from your bank.
  • An online order confirmation note.
  • Receipt for a purchase.
  • Others.

Malware authors may be also using compromised software installers and infected websites to spread this nasty ransomware infection. These methods enable them to embed the ransomware payload to a app installer or inject it into a web page. Both cases could result in an automatic and unnoticed execution of this payload directly on a target system.

.CORP Files Virus – Overview

Once loaded on the system, .CORP files virus initiates a sequence of malicious actions that cause heavy damages over the whole system. Except the file that is designed to trigger the infection process, the ransomware is likely to establish additional malicious files on the system. These files may be located in the following folders:

  • %Roaming%
  • %Windows%
  • %AppData%
  • %Local%
  • %Temp%

With the help of some of the established malicious files, .CORP ransomware could evade detection and reach the main infection stage – data encryption.

An additional finding about the impact of this ransomware is that it adds specific executable files in the Windows startup folder. This process along with the process of infecting certain Windows registries such as Run and RunOnce sub-keys makes .CORP ransomware one of the first programs that load on each system start. In order to prevent this nasty side effect you should definitely check your registries for malicious values and erase them all if present.

According to further analyses of this .CORP ransomware sample, it is designed to detect infected device’s current language. This command is probably performed in favor of hackers’ statistic purposes. It could serve for the configuration of the ransom amount that may be different for each country.

At this point, it is clear that the ransom note associated with this Paradise version has the name $%%! NOTE ABOUT FILES -=!-.html. Here is the complete message it presents:

Your files are encrypted!

Paradise Ransomware Team!

[Your personal ID] [WHAT HAPPENED]

Your important files produced on this computer have been encrypted due a security problem
If you want to restore them, write to us by e-mail.
You have to pay for decryption in Bitcoins. The price depends on how fast you write to us.
After payment we will send you the decryption tool that will decrypt all your files.


Before paying you can send us 1-3 files for free decryption.
Please note that files must NOT contain valuable information
The file size should not exceed 1MB.
As evidence, we can decrypt one file


The easiest way to buy bitcoin is LocalBitcoins site.
You have to register, click Buy bitcoins and select the seller by payment method and price
write to Google how to buy Bitcoin in your country?

e-mail: alexbanan@tuta.io
e-mail: alexbanan@tuta.io

CORP files virus Paradise ransomware ransom note sensorstechforum removal guide

Since there is no evidence available whether hackers possess a working decryption tool or a broken one, we recommend you to avoid paying the ransom until you try to cope with this devastating issue with the help of security measures.

.CORP Files Virus – Encryption Process

Since the .CORP files virus has been identified to be an iteration of Paradise ransomware it is likely to follow the same encryption pattern as its predecessors. Therefore, your files could have been encrypted with the help of the RSA cipher algorithm. It is a really sophisticated algorithm that transforms parts of the original code of target files and leaves them corrupted. That’s why you cannot open files marked with the extension .CORP.

As of the files that are likely to be corrupted by .CORP files virus they could be all of the following:

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

To mark corrupted files, this Paradise ransomware version uses the following pattern:

  • _%ID%_{alexbanan@tuta.io}.CORP

For example if you have an image file named trip.jpg it will be renamed to trip.jpg_%ID%_{alexbanan@tuta.io}.CORP

Yet other two iterations detected to belong to the same ransomware family could be recognized by the specific extensions

.VACv2 and .paradise.

Remove .CORP Files Virus and Restore Data

The ransomware associated with .CORP extension is a threat with highly complex code that plagues not only your files but your whole system. So you should properly clean and secure your infected system before you could regularly use it again. Below you could find a step-by-step removal guide that may be helpful in attempting to remove this ransomware. Choose the manual removal approach if you have previous experience with malware files. If you don’t feel comfortable with the manual steps select the automatic section from the guide. Steps there enable you to check the infected system for ransomware files and remove them with a few mouse clicks.

In order to keep your system safe from ransomware and other types of malware in the future, you should consider the installation of a reliable anti-malware program with active protection module. An additional security layer that could help you prevent the occurrence of ransomware attacks is an

anti-ransomware tool.

If you want to understand how to potentially fix encrypted files with the help of alternative data recovery approaches, make sure to read carefully all details mentioned in the step “Restore files”. We remind you that before the beginning of data recovery process, you need to back up all encrypted files to an external drive and prevent their irreversible loss by doing this.

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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