.STUB Files Virus (Paradise) - How to Remove It
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.STUB Files Virus (Paradise) – How to Remove It

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remove stub files virus paradise ransomware sensorstechforum guide

In this article, you will find more information about .STUB files virus as well as a step-by-step guide on how to remove malicious files from an infected system and how to potentially recover files encrypted by this ransomware.

The .STUB files virus is the name given to a data locker ransomware that belongs to Paradise threat family. An infection with the .STUB files virus leads to the corruption of essential system settings and valuable data of yours. As a result, you see a ransom message that extorts a ransom payment for the decryption of .STUB files.

Threat Summary

Name.STUB Files Virus
TypeRansomware, Cryptovirus
Short DescriptionRansomware infection that plagues computer systems, encodes valuable files with strong cihper algorithm and demands a ransom fee.
SymptomsImportant files cannot be opened. They appear with the extension .STUB appeanded to their names. A message extorts ransom payment for files decryption.
Distribution MethodSpam Emails, Email Attachments
Detection Tool See If Your System Has Been Affected by .STUB Files Virus

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Malware Removal Tool

User ExperienceJoin Our Forum to Discuss .STUB 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.

.STUB Files Virus – Distribution

There are several spread techniques that could be among the ones used for the distribution of .STUB ransomware. Malsam is one of those techniques. Since it enables hackers to spread their malicious code via massive email campaigns, they often prefer it.

For its realization, they usually embed their malware in files of common types after which attach these files to email messages. In addition, they configure the emails to pose as representatives of 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. The moment you do it, you will activate the 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 an app installer or inject it into a web page. Interaction with both could result in automatic and unnoticed execution of this payload directly on your system.

S.STUB Files Virus – Overview

The .STUB files virus is the name given to a data locker ransomware that belongs to

Paradise threat family. It is designed to plague computer systems in order to encode valuable files and then extort a ransom payment for their decryption.

In the beginning, .STUB initiates the creation of several malicious files and objects which it needs for further attack operations. Like the majority of ransomware threats, this Paradise iteration is likely to drop these files in some of the following system folders:

  • %AppData%
  • %Local%
  • %LocalLow%
  • %Roaming%
  • %Temp%

When .STUB is ready with the establishment of malicious files, it starts executing them in a predefined order. By doing this, the ransomware alters the settings of many system components. As a result, it becomes able to evade detection and complete the attack to its very end.

Among the affected components is likely to be the Registry Editor especially the registry sub-keys Run and RunOnce. This could be explained by the fact that the functionalities of these keys could be used for the auto-execution process of malicious files.

At last, .STUB ransomware drops the ransom message file Instructions with your files.txt to present the steps you need to perform to restore .STUB files. And here is what hackers expect you to do:

All your files have been encrypted contact us via the e-mail listed below.
e-mail: paradise@all-ransomware.info or e-mail: paradise@all-ransomware.info
Paradise Ransomware team.

instructions with yuor files txt ransom message stub files virus sensorstechforum guide

In addition, your screen may be blocked by the following window:

stub files virus paradise ransomware ransom page sensorstechforum guide

According to hackers’ expectations, you should contact them at the presented mail and wait until they send you a reply with further instructions. Even though they don’t mention the amount of demanded ransom is not mentioned, it becomes clear that they insist that you should pay it in Bitcoins.

Beware, ransom payment does NOT guarantee the recovery of .STUB files. So our advice is to avoid ransom payment. Since there are some alternative data recovery approaches that may help you to restore some .STUB files, we recommend you to consider their usage. Meanwhile, a free decryption tool may be released by security researchers as well.

.STUB Files Virus – Encryption Process

Like its predecessors, .STUB files virus is believed to utilize the RSA cipher algorithm when it reaches the data encryption stage. Unfortunately, this means that the code of your valuable files is transformed in a way that you cannot open them. Files like:

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

will remain locked by the ransomware until their code is reverted back to its original state. A sure sign of an encrypted file is the specific sequence of two extensions appended to its name:

  • _User ID_{paradise@all-ransomware.info}.STUB

Remove .STUB Files Virus and Restore Data

The so-called .STUB 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 Paradise .STUB 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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