A new ransomware is infecting computers around the Web. Its name is Trun, and it adds an extension with the same name to files after encrypting them.
The ransomware aims to encrypt files with widely-used extensions. To remove it and see if you can decrypt your files, you should carefully read the whole article.
Name | Trun Ransomware |
Type | Ransomware |
Short Description | The ransomware encrypts files with an RSA algorithm and asks for a ransom to be paid for decrypting them. |
Symptoms | Files are encrypted and cannot be accessed. A file with instructions for paying the ransom appears. |
Distribution Method | Spam Emails, Email Attachments, File Sharing Networks |
Detection tool | Download Malware Removal Tool, to See If Your System Has Been Affected by malware |
User Experience | Join our forum to discuss Trun 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. |
Trun Ransomware – Delivery
The Trun ransomware uses a few methods for delivery to infect computers. One of them is through spam emails containing malicious files as attachments. Opening such an attachment automatically lets the malware inside a computer. Malicious code may be secretly put into the body of the email. So, just by opening such emails, you can get infected, even without opening an attachment.
Other delivery methods are via social networks and file sharing services, which may have the same attachments and files containing the Trun ransomware. It might be disguised as useful software, a needed update or something of the sort. Visiting unknown sites and redirects may lead to the malware infection as well.
Trun Ransomware – Technical Information
Trun is classified by researchers as ransomware. It is detected by some anti-malware programs as BAT/Agent.435. Once your computer is infected with it, the ransomware does a preparation before starting the encryption process. There is a Trojan horse which puts the following files in your computer:
- three .cmd files
- a .js file
- 4077430c_trun.KEY file
- trun.KEY file
- CONFIRMATION.KEY file
- trun.txt file
The Trojan may also set an entry in the Windows Registry to start automatically with every boot of Windows. This is the location where such an entry is usually set:
→HKLM/Software/Microsoft/Windows/CurrentVersion/Run/
Trun spreads copies of the text file containing instructions for paying the ransom. The email left for contacting the cyber-criminals is trunhelp@yandex.ru. Contacting them to pay for a possible decryption of your files is not advised for a number of reasons. There is no certainty your files are going to be decrypted if the key is even sent to you after payment. Also, if you pay ransomware creators, they will only come back with a worse version of the malware and a stronger encryption.
Next, Trun ransomware is known to search for and encrypt files with these extensions:
→ .doc, .txt, .xls, .xlsx, .xml, .docx, .html, .jpg, .js, .mdb, .odt, .pdf, .php, .png, .ppt, .pptx, .sql
This is not a full list as there might be other file extensions that can be encrypted. It sets the file extension of all encrypted files to .trun. Hence, its name is Trun. The encryption algorithm of the ransomware, according to its own instruction note, is an RSA one.
The Trun ransomware is of Russian origin, but it has hit users around the world.
At this moment, it is unknown if Shadow Volume Copies are deleted from the Windows operating system, but it is highly likely. Thus, after removing the ransomware, you should see the 4th section of the instructions written below for a few ways in which you can try restoring your files.
Remove Trun Ransomware and Restore .trun Encrypted Files
If you have been infected by Trun, you should have at least a little experience in removing malware. This ransomware can lock your files irreparably, so it is highly recommended that you act fast and follow the step-by-step guide provided down here:
- Step 1
- Step 2
- Step 3
- Step 4
- Step 5
Step 1: Scan for Trun Ransomware with SpyHunter Anti-Malware Tool
Ransomware Automatic Removal - Video Guide
Step 2: Uninstall Trun Ransomware and related malware 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:
Step 3: Clean any registries, created by Trun 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 Trun Ransomware there. This can happen by following the steps underneath:
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: Boot Your PC In Safe Mode to isolate and remove Trun Ransomware
Step 5: Try to Restore Files Encrypted by Trun Ransomware.
Method 1: Use STOP Decrypter by Emsisoft.
Not all variants of this ransomware can be decrypted for free, but we have added the decryptor used by researchers that is often updated with the variants which become eventually decrypted. You can try and decrypt your files using the instructions below, but if they do not work, then unfortunately your variant of the ransomware virus is not decryptable.
Follow the instructions below to use the Emsisoft decrypter and decrypt your files for free. You can download the Emsisoft decryption tool linked here and then follow the steps provided below:
1 Right-click on the decrypter and click on Run as Administrator as shown below:
2. Agree with the license terms:
3. Click on "Add Folder" and then add the folders where you want files decrypted as shown underneath:
4. Click on "Decrypt" and wait for your files to be decoded.
Note: Credit for the decryptor goes to Emsisoft researchers who have made the breakthrough with this virus.
Method 2: Use data recovery software
Ransomware infections and Trun 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.
Simply click on the link and on the website menus on the top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.
Trun Ransomware-FAQ
What is Trun Ransomware Ransomware?
Trun 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 algorithms 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.
What Does Trun Ransomware Ransomware Do?
Ransomware in general is a malicious software that is designed to block access to your computer or files until a ransom is paid.
Ransomware viruses can also damage your system, corrupt data and delete files, resulting in the permanent loss of important files.
How Does Trun Ransomware Infect?
Via several ways.Trun Ransomware Ransomware infects computers by being sent via phishing emails, 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.
Another way you may become a victim of Trun 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 .Trun Ransomware files?
You can't without a decryptor. At this point, the .Trun Ransomware files are encrypted. You can only open them once they are decrypted using a specific decryption key for the particular algorithm.
What to Do If a Decryptor Does Not Work?
Do not panic, and backup the files. If a decryptor did not decrypt your .Trun Ransomware files successfully, then do not despair, because this virus is still new.
Can I Restore ".Trun Ransomware" Files?
Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .Trun Ransomware files.
These methods are in no way 100% guaranteed that you will be able to get your files back. But if you have a backup, your chances of success are much greater.
How To Get Rid of Trun Ransomware Virus?
The safest way and the most efficient one for the removal of this ransomware infection is the use a professional anti-malware program.
It will scan for and locate Trun Ransomware ransomware and then remove it without causing any additional harm to your important .Trun Ransomware files.
Can I 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:
Germany - Offizielles Portal der deutschen Polizei
United States - IC3 Internet Crime Complaint Centre
United Kingdom - Action Fraud Police
France - Ministère de l'Intérieur
Italy - Polizia Di Stato
Spain - Policía Nacional
Netherlands - Politie
Poland - Policja
Portugal - Polícia Judiciária
Greece - Cyber Crime Unit (Hellenic Police)
India - Mumbai Police - CyberCrime Investigation Cell
Australia - Australian High Tech Crime Center
Reports may be responded to in different timeframes, depending on your local authorities.
Can You Stop Ransomware from Encrypting Your Files?
Yes, you can prevent ransomware. The best way to do this is to ensure your computer system is updated with the latest security patches, use a reputable anti-malware program and firewall, backup your important files frequently, and avoid clicking on malicious links or downloading unknown files.
Can Trun Ransomware Ransomware Steal Your Data?
Yes, in most cases ransomware will steal your information. It is a form of malware that steals data from a user's computer, encrypts it, and then demands a ransom in order to decrypt it.
In many cases, the malware authors or attackers will threaten to delete the data or publish it online unless the ransom is paid.
Can Ransomware Infect WiFi?
Yes, ransomware can infect WiFi networks, as malicious actors can use it to gain control of the network, steal confidential data, and lock out users. If a ransomware attack is successful, it could lead to a loss of service and/or data, and in some cases, financial losses.
Should I Pay Ransomware?
No, you should not pay ransomware extortionists. Paying them only encourages criminals and does not guarantee that the files or data will be restored. The better approach is to have a secure backup of important data and be vigilant about security in the first place.
What Happens If I Don't Pay Ransom?
If you don't pay the ransom, the hackers may still have access to your computer, data, or files and may continue to threaten to expose or delete them, or even use them to commit cybercrimes. In some cases, they may even continue to demand additional ransom payments.
Can a Ransomware Attack Be Detected?
Yes, ransomware can be detected. Anti-malware software and other advanced security tools can detect ransomware and alert the user when it is present on a machine.
It is important to stay up-to-date on the latest security measures and to keep security software updated to ensure ransomware can be detected and prevented.
Do Ransomware Criminals Get Caught?
Yes, ransomware criminals do get caught. Law enforcement agencies, such as the FBI, Interpol and others have been successful in tracking down and prosecuting ransomware criminals in the US and other countries. As ransomware threats continue to increase, so does the enforcement activity.
About the Trun Ransomware Research
The content we publish on SensorsTechForum.com, this Trun Ransomware how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific malware and restore your encrypted files.
How did we conduct the research on this ransomware?
Our research is based on an independent investigation. We are in contact with independent security researchers, and as such, we receive daily updates on the latest malware and ransomware definitions.
Furthermore, the research behind the Trun Ransomware ransomware threat is backed with VirusTotal and the NoMoreRansom project.
To better understand the ransomware threat, please refer to the following articles which provide knowledgeable details.
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