Home > Ransomware > .prus Ransomware – How to Remove It
THREAT REMOVAL

.prus Ransomware – How to Remove It

This article will aid you to remove .prus Ransomware. Follow the ransomware removal instructions provided at the end of the article.

.prus Ransomware is one that encrypts your data and demands money as a ransom to get it restored. Files will receive the .prus extension. The .prus Ransomware will leave ransomware instructions as a desktop wallpaper image. Keep on reading the article and see how you could try to potentially recover some of your locked files and data.

Threat Summary

Name .prus Ransomware
Type Ransomware, Cryptovirus
Short Description The ransomware encrypts files by placing the .prus extension on the target files on your computer system and demands a ransom to be paid to allegedly recover them.
Symptoms The ransomware will encrypt your files and leave a ransom note with payment instructions.
Distribution Method Spam Emails, Email Attachments
Detection Tool See If Your System Has Been Affected by malware

Download

Malware Removal Tool

User Experience Join Our Forum to Discuss .prus Ransomware.
Data Recovery Tool Windows 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.

.prus Ransomware – Distribution Techniques

The .prus ransomware is a newly discovered strain that is descendant from the RotorCrypt family of viruses. The identified attack campaign has been found in small-sized batches of samples. We anticipate that as the virus starts to infect the target computers a wider range of the distribution types will be used.

One of the main tactics that are widely used by criminals is the use of email phishing messages — they are modeled as notifications that appear as being sent by a well-known company or service. Their body contents can contain links to the virus files or they can be directly attached. In most cases stolen multimedia elements and texts can be stolen from the legitimate variants and to deceive the users.

In many cases the hackers can craft hacker-controlled sites that are hosted on domains that sound similar to well-known portals. They are designed to appear like popular search engines, download portals and other pages. To coerce the visitors into thinking that they are visiting a safe place self-signed security certificates can be added.

.Prus ransomware variants as RotorCrypt malware samples are very likely to be integrated in payload carriers of which there are two main types:

  • Dangerous Documents — The criminals can embed macros that contain the virus installation instructions in documents across all popular file formats: presentations, text documents, databases and spreadsheets. Whenever such a file is opened by the victims a prompt will appear asking them to enable the built-in commands, this will trigger the infection.
  • Application Installers — The virus code can also be made part of application setup files — the criminals will typically target the most popular software types used by end users: system utilities, creativity suites, productivity and office programs and etc.

All of these file types can be spread using file sharing networks such as BitTorrent where both legitimate and pirate software is distributed.

Larger infection campaigns can be distributed to victims via browser hijackers, they are modified plugins made for the most popular web browsers aiming to persuade the users that they are safe. While they are found mostly on the associated repositories using fake developer credentials, they can be found on hacker-made sites as well. Those that are found on the plugin repositories typically post descriptions that promise new features addition, performance optimizations and etc. Whenever they are installed the RotorCrypt ransomware sample will be deployed.

.prus Ransomware – Detailed Analysis

Due to the fact that the .prus ransomware is confirmed as a RotorCrypt sample a detailed code analysis has been made. Upon infection a built-in behavior pattern will be started which depending on the current version will launch a sequence of modules.

So far the confirmed actions are the removal of sensitive user data: system backups, shadow volume copies and restore points. This is done by interacting with the necessary Windows services. This shows that the ransomware can use various types of system modules.

We anticipate that other type of dangerous behavior can be programmed:

  • Windows Registry Changes — The ransomware engine can modify the relevant Registry values that are used both by the operating system and any third-party installed applications. This can lead to serious performance issues to the point of rendering the computers unusable if the virus is not removed from the system. Changed values that are attributed to third-party applications or services can lead to unexpected errors, problems with usability and data loss.
  • Boot Options Change — The other dangerous tactic employed by many RotorCrypt ransomware samples such as .prus is the engine’s ability to install itself as a persistent threat. This means that it will reconfigure the boot options, Registry values and operating system preferences in order to automatically start as soon as the computer is powered on. In most of the cases this will also block access to these places thereby making it impossible to follow the majority of user remoal guides.
  • Additional Payload Delivery — The made .prus RotorCrypt ransomware infections can be used to deliver a wide range of other threats to the victim computers.
  • Security Software Removal — Most advanced virus types are capable of finding out what security software is installed on the victim computers. This includes all popular anti-virus programs, firewalls, intrusion detection systems and virtual machine hosts.

Many virus files are also capable of hijacking user data. This is done primarily in order expose their identities. This procedure is done by a special engine that searches for certain strings such as a person’s name, address, phone number, location and any stored account credentials.

This same component is also capable of harvesting enough data in order to create an unique ID that is to be asssigned to each affected computer. The information that is hijacked in this particular case can be details about the installed hardware components, user settings and operating system conditions.

The .prus ransomware is fully capable of installing a Trojan module that will connect to a hacker-controlled server. This is a secure and persistent connection that allows the hackers to take over control of the affected machines, install other threats and hijack user data.

.prus Ransomware – Encryption Process

Like other popular malware samples the .prus ransomware will launch the encryption engine once all prior modules have finished running. It will probably use a built-in list of target file type extensions which are to be processed by a strong cipher. An example list can include the following data types:

  • Backups
  • Databases
  • Archives
  • Images
  • Music
  • Videos

All affected files are renamed with the .prus extension. A ransomware note will be created in a file called “informprus.txt” alongside a desktop wallpaper that will be applied to to infected computers. As the base engine is modular in nature it can be extended with additional components and behavior patterns.

Remove .prus Ransomware and Try to Restore Data

If your computer system got infected with the .prus 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.

Avatar

Martin Beltov

Martin graduated with a degree in Publishing from Sofia University. As a cyber security enthusiast he enjoys writing about the latest threats and mechanisms of intrusion.

More Posts

Follow Me:
Twitter


Attention! SensorsTechForum strongly recommends that all malware victims should look for assistance only by reputable sources. Many guides out there claim to offer free recovery and decryption for files encrypted by ransomware viruses. Be advised that some of them may only be after your money.

As a site that has been dedicated to providing free removal instructions for ransomware and malware since 2014, SensorsTechForum’s recommendation is to only pay attention to trustworthy sources.

How to recognize trustworthy sources:

  • Always check "About Us" web page.
  • Profile of the content creator.
  • Make sure that real people are behind the site and not fake names and profiles.
  • Verify Facebook, LinkedIn and Twitter personal profiles.


OFFER

REMOVE IT NOW (PC)
with Anti-Malware
We recommend you to download SpyHunter and run free scan to remove all virus files on your PC. This saves you hours of time and effort compared to doing the removal yourself.
SpyHunter 5 free remover allows you, subject to a 48-hour waiting period, one remediation and removal for results found. Read EULA and Privacy Policy


Windows Mac OS X

How to Remove .prus Ransomware from Windows.


Step 1: Boot Your PC In Safe Mode to isolate and remove .prus Ransomware

OFFER

Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your PC with SpyHunter

Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter's malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria

1. Hold Windows key() + R


2. The "Run" Window will appear. In it, type "msconfig" and click OK.


3. Go to the "Boot" tab. There select "Safe Boot" and then click "Apply" and "OK".
Tip: Make sure to reverse those changes by unticking Safe Boot after that, because your system will always boot in Safe Boot from now on.


4. When prompted, click on "Restart" to go into Safe Mode.


5. You can recognise Safe Mode by the words written on the corners of your screen.


Step 2: Uninstall .prus Ransomware and related software from Windows

Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:


1. Hold the Windows Logo Button and "R" on your keyboard. A Pop-up window will appear.


2. In the field type in "appwiz.cpl" and press ENTER.


3. This will open a window with all the programs installed on the PC. Select the program that you want to remove, and press "Uninstall"
Follow the instructions above and you will successfully uninstall most programs.


Step 3: Clean any registries, created by .prus Ransomware on your computer.

The usually targeted registries of Windows machines are the following:

  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce

You can access them by opening the Windows registry editor and deleting any values, created by .prus Ransomware there. This can happen by following the steps underneath:

1. Open the Run Window again, type "regedit" and click OK.


2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.


3. You can remove the value of the virus by right-clicking on it and removing it.
Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.

IMPORTANT!
Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.

Step 4: Scan for .prus Ransomware with SpyHunter Anti-Malware Tool

1. Click on the "Download" button to proceed to SpyHunter's download page.


It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria.


2. After you have installed SpyHunter, wait for it to update automatically.

SpyHunter5-update-2018


3. After the update process has finished, click on the 'Malware/PC Scan' tab. A new window will appear. Click on 'Start Scan'.

SpyHunter5-Free-Scan-2018


4. After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the 'Next' button.

SpyHunter-5-Free-Scan-Next-2018

If any threats have been removed, it is highly recommended to restart your PC.

Step 5 (Optional): Try to Restore Files Encrypted by .prus Ransomware.

Ransomware infections and .prus Ransomware aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.

1. Download the reccomended Data Recovery software by clicking on the link underneath:

Simply click on the link and on the website menus on top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.


Windows Mac OS X

Get rid of .prus Ransomware from Mac OS X.


Step 1: Uninstall .prus Ransomware and remove related files and objects

OFFER
Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your Mac with SpyHunter for Mac
Keep in mind, that SpyHunter for Mac needs to purchased to remove the malware threats. Click on the corresponding links to check SpyHunter’s EULA and Privacy Policy


1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:


2. Find Activity Monitor and double-click it:


3. In the Activity Monitor look for any suspicious processes, belonging or related to .prus Ransomware:

Tip: To quit a process completely, choose the “Force Quit” option.


4. Click on the "Go" button again, but this time select Applications. Another way is with the ⇧+⌘+A buttons.


5. In the Applications menu, look for any suspicious app or an app with a name, similar or identical to .prus Ransomware. If you find it, right-click on the app and select “Move to Trash”.


6: Select Accounts, after which click on the Login Items preference. Your Mac will then show you a list of items that start automatically when you log in. Look for any suspicious apps identical or similar to .prus Ransomware. Check the app you want to stop from running automatically and then select on the Minus (“-“) icon to hide it.


7: Remove any left-over files that might be related to this threat manually by following the sub-steps below:

  • Go to Finder.
  • In the search bar type the name of the app that you want to remove.
  • Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
  • If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.

In case you cannot remove .prus Ransomware via Step 1 above:

In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:

Disclaimer! If you are about to tamper with Library files on Mac, be sure to know the name of the virus file, because if you delete the wrong file, it may cause irreversible damage to your MacOS. Continue on your own responsibility!

1: Click on "Go" and Then "Go to Folder" as shown underneath:

2: Type in "/Library/LauchAgents/" and click Ok:

3: Delete all of the virus files that have similar or the same name as .prus Ransomware. If you believe there is no such file, do not delete anything.

You can repeat the same procedure with the following other Library directories:

→ ~/Library/LaunchAgents
/Library/LaunchDaemons

Tip: ~ is there on purpose, because it leads to more LaunchAgents.


Click the button below below to download SpyHunter for Mac and scan for .prus Ransomware:


Download

SpyHunter for Mac



Step 3 (Optional): Try to Restore Files Encrypted by .prus Ransomware.

Ransomware infections and .prus Ransomware aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.

1. Download the reccomended Data Recovery software by clicking on the link underneath:

Simply click on the link and on the website menus on top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.


.prus Ransomware FAQ

What is .prus Ransomware ransomware and how does it work?

.prus Ransomware is a ransomware infection - the malicious software that enters your computer silently and blocks either access to the computer itself or encrypt your files.

Many ransomware viruses use sophisticated encryption algorithm how to make your files inaccessible. The goal of ransomware infections is to demand that you pay a ransom payment to get access to your files back.

How does .prus Ransomware ransomware infect my computer?

Via several ways..prus Ransomware Ransomware infects computers by being sent via phishing e-mails, containing virus attachment.

This attachment is usually masked as an important document, like an invoice, bank document or even a plane ticket and it looks very convincing to users.

After you download and execute this attachment, a drive-by download occurs and your computer is infected with the ransomware virus.

Another way, you may become a victim of .prus Ransomware is if you download a fake installer, crack or patch from a low reputation website or if you click on a virus link. Many users report getting a ransomware infection by downloading torrents.

How to open ..prus Ransomware files?

You can't. At this point the ..prus Ransomware files are encrypted. You can only open them once they are decrypted.

Decryptor did not decrypt my data. What now?

Do not panic and backup the files. If a decryptor did not decrypt your ..prus Ransomware files successfully, then do not despair, because this virus is still new.

One way to restore files, encrypted by .prus Ransomware ransomware is to use a decryptor for it. But since it's a new virus, advised that the decryption keys for it may not be out yet and available to the public. We will update this article and keep you posted as soon as this decryptor is released.

How Do I restore "..prus Ransomware" files (Other Methods)?

Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore ..prus Ransomware files.

These methods are in no way 100% guarantee that you will be able to get your files back. But if you have a backup, your chances of success are much greater.

How do I get rid of .prus Ransomware ransomware virus?

The safest way and the most efficient one for the removal of this ransomware infection is the use a professional anti malware software. It will scan for and locate .prus Ransomware ransomware and then remove it without causing any additional harm to your important ..prus Ransomware files.

Also, keep in mind that viruses like .prus Ransomware ransomware also install Trojans and keyloggers that can steal your passwords and accounts. Scanning your computer with an anti-malware software will make sure that all of these virus components are removed and your computer is protected in the future.

What to Do If nothing works?

There is still a lot you can do. If none of the above methods seem to work for you, then try these methods:

  • Try to find a safe computer from where you can can login on your own line accounts like One Drive, iDrive, Google Drive and so on.
  • Try to contact your friends, relatives and other people so that they can check if they have some of your important photos or documents just in case you sent them.
  • Also, check if some of the files that were encrypted it can be re-downloaded from the web.
  • Another clever way to get back some of your files is to find another old computer, a flash drive or even a CD or a DVD where you may have saved your older documents. You might be surprised what will turn up.
  • You can also go to your email account to check if you can send any attachments to other people. Usually what is sent the email is saved on your account and you can re-download it. But most importantly, make sure that this is done from a safe computer and make sure to remove the virus first.

More tips you can find on our forums, where you can also asks any questions about your ransomware problem.

Leave a Comment

Your email address will not be published. Required fields are marked *

Stay tuned
Subscribe for our newsletter regarding the latest cybersecurity and tech-related news.