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Rontok Ransomware — How to Remove It

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

Rontok Ransomware is one that encrypts your personal data with a strong cipher and demands money as a ransom to get it restored. The Rontok Ransomware will leave ransomware instructions as text file. Keep on reading the article and see how you could try to potentially recover some of your locked files and data.

Threat Summary

Name Rontok Ransomware
Type Ransomware, Cryptovirus
Short Description The ransomware encrypts sensitive user 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

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User Experience Join Our Forum to Discuss Rontok 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.

Rontok Ransomware – Distribution Techniques

The Rontok ransomware is a hybrid virus that targets both Linux servers and can effectively take down Windows machines as well. It is spread using unknown methods as the collected samples are relatively low in number. There are a variety of distribution methods that will deliver the virus files to the target systems. Direct attacks can be done by using vulnerability testing. This is done by utilizing a software that will automatically search for weaknesses which will be exploited if found.

The criminals can attempt to infect the target computer users by crafting email SPAM messages which are sent to their inboxes. By using social engineering tactics the victims will be coerced into thinking that they have received a legitimate message from a well-known company or service. The criminals will use the same body elements as legitimate and well-known sources in order to fool the recipients into thinking that they are receiving a real notification. In the body contents the virus files can be linked or they can be directly attached.

Alternatively the hackers can create malicious web sites which are used to confuse the visitors into thinking that they are visiting legitimate and safe addresses. They can be download portals, search engines, product landing pages and etc. In some cases the pages can even include stolen or hacker-generated security certificates and similar sounding domain names.

The associated Rontok ransomware samples can be uploaded to file-sharing networks such as BitTorrent where both pirate and legitimate files can be shared. They may also be embedded in payload carriers of which there are two popular types:

  • Infected Documents — The hackers can produce documents containing dangerous virus code that will deliver the Rontok ransomare infection. They are placed in the macros which can be embedded across all popular types: presentations, databases, text files and spreadsheets. When they are opened by the victims a prompt will be spawned asking the users to enable the built-in code in order to correctly “view” the documents.
  • Setup Files — The criminals can create dangerous application installers of popular products which are positioned as safe and legitimate. This is done by taking the real files and inserting the necessary code into them. Usually the criminals will use applications that are popular with end users: creativity suites, productivity and office apps, graphics software, system utilities and etc.

Alongside these methods the criminals can also embed the virus installation code in malicious web browser extensions, alternatively known as hijackers —they are usually uploaded to the relevant repositories using fake or stolen developer credentials and user reviews. Their descriptions will offer promises of improvements such as new features addition or performance optimizations. At the same time modifications to the browser settings can be done in order to redirect the victims to a hacker-set portal page. Values that are changed include the default home page, search engine and new tabs page.

Rontok Ransomware – Detailed Analysis

The Rontok ransomware is designed to infiltrate Linux servers and it can also be configured to affect the machines as soon as the infection is made. We have received reports that indicate that the engine will search for an active web server. This is done in order to find the relevant public_html folder which contains all of the web site content which is delivered to the visitors. This is done in order to display the ransomware note to everyone who visits the web server of the infected machines. This is an act of defacement, a type of sabotage.

This behavior shows that there are some modules that are made part of the installation:

  • Information Gathering — The Rontok ransomware engine is programmed to interactively scan the compromised machines and search for specific information. In most cases this involves machine identification metrics which are composed of strings such as the installed hardware components, users preferences and system settings. The same engine can additionally be used to extract data that can directly reveal victim information that can automatically lead to the exposure of their identity. This is done by making the engine search for strings such as a person’s name, address, phone number, interests and account credentials.
  • Security Software Bypass — The Rontok malware engine can be configured to search for security software that can effectively block the normal functioning of Rontok. This includes all kinds of anti-virus products, firewalls, intrusion detection systems, sandbox/debug environments and virtual machine hosts.
  • Persistent Installation — The Rontok ransomware can be installed in a way which will automatically launch the infection as soon as the computer has started booting. In addition it may block access to the recovery boot options and system restore menus. This is rated as a dangerous action as many manual user removal guides depend on access to them.
  • Data Removal — The engine can search for sensitive data that will be automatically removed when found: system backups, restore points and shadow volume copies.

We anticipate that the hackers will probably modify the behavior patterns during the campaign execution in order to find out which will be the most effective method of intrusion.

As the virus primarily targets web servers it is very possible that cryptocurrecny miners can be a part of the infection. They represent malicious scripts which will start a process on the infected server that will run complex mathematical operations. They will take advantage of the installed hardware resources (CPU, GPU, memory and hard disk space) in order to compute them. Whenever one of the tasks has finished running it will reward the hacker controllers with digital currency.

The alternative name of the Rontok threat is Borontok ransomware.

Rontok Ransomware – Encryption Process

The Rontok Ransomware will launch the relevant encryption operations when all modules have finished running. Like other similar threats it will use a built-in list of target file type extensions such as the following:

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

All affected file will assigned the .rontok extension and encoded with the base64 algorithm.

Remove Rontok Ransomware and Try to Restore Data

If your computer system got infected with the Rontok 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.

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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.

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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.


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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 Rontok Ransomware from Windows.


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

Ransomware infections and Rontok 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 Rontok Ransomware from Mac OS X.


Step 1: Uninstall Rontok 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 Rontok 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 Rontok 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 Rontok 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 Rontok 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 Rontok 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 Rontok Ransomware:


Download

SpyHunter for Mac



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

Ransomware infections and Rontok 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.


Rontok Ransomware FAQ

What is Rontok Ransomware ransomware and how does it work?

Rontok 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 Rontok Ransomware ransomware infect my computer?

Via several ways.Rontok 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 Rontok 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 .Rontok Ransomware files?

You can't. At this point the .Rontok 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 .Rontok Ransomware files successfully, then do not despair, because this virus is still new.

One way to restore files, encrypted by Rontok 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 ".Rontok 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 .Rontok 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 Rontok 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 Rontok Ransomware ransomware and then remove it without causing any additional harm to your important .Rontok Ransomware files.

Also, keep in mind that viruses like Rontok 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.

How to Report Ransomware to Authorities?

In case your computer got infected with a ransomware infection, you can report it to the local Police departments. It can help authorities worldwide track and determine the perpetrators behind the virus that has infected your computer. Below, we have prepared a list with government websites, where you can file a report in case you are a victim of a cybercrime:

Cyber-security authorities, responsible for handling ransomware attack reports in different regions all over the world:

Reports may be responded to in different timeframes, depending on your local authorities.

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