This article explains the issues that occur in case of infection with .tro files virus and provides a complete guide on how to remove malicious files and how to potentially recover files encrypted by this ransomware.
An infection with the so-called .tro files virus leads to the corruption of important files. For their corruption, it utilizes sophisticated cipher algorithm. With the help of this algorithm, it transforms parts of the original code of target files and leaves them out of order. Soon after this ransomware encodes target files, it opens a ransom message to extort ransom payment for their recovery.
Threat Summary
| Name | .tro Files Virus |
| Type | Ransomware, Cryptovirus |
| Short Description | A data locker ransomware that utilizes strong cihper algorithm to encrypt valuable files stored on the infected computer. |
| Symptoms | Important files are renamed with the .tro extension. Their data remains inaccessible. Hackers demand extort a ransom fee. u |
| 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 .tro Files Virus. |
| 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. |
.tro Files Virus – Update January 2019
There is a decrypter tool released for STOP ransomware’s .tro files virus variant. The tool was initially released for the .puma, .pumax, .pumas versions of the cryptovirus. Michael Gillespie has updated it to also support .djvu, .djvuq, .djvur, .djvut, .djvuu, .pdff, .tfude, .tfudeq, .tro, .udjvu, .tfudet. You can download the tool via the Decryption Tool link here. The tool requires a pair of an original file and its encrypted version.
.tro Files Virus – Distribution
Like many other crypto viruses, .tro is likely to be spread as a part of malicious email messages. This spread method is called malspam and in this paragraph, you will learn more about its typical components. Typical of these emails are:
- An URL address presented in the form of an in-text link, button, image, banner or other form. Once loaded in the browser the web page associated with this link usually triggers an automatic download process of the malicious ransomware payload. After downloading the payload the same page usually activates specific scripts that execute it directly on your PC.
- An attachment that contains the malware in it. Usually, according to the text message this file should be reviewed as soon as possible due to the importance of its information. The moment you open it on your device is the moment when you trigger the infection process with .djvu files virus. This file may be a familiar type of file such as .rar, .zip, .7z, .docx When infected such a file could be set to evade active security measures and complete the attack without leaving you any chance of detecting the malicious activities it performs on the background.
Since the security of your device and your data is of paramount importance we recommend you to use the help of free online scanners like VirusTotal and ZipeZip every next time you receive a questionable email that contains any of the mentioned components. With the help of these scanners, you will easily identify whether the components are malicious or not.
Other possible infection vectors that may be preferred by the creators of this .djvu crypto virus may be malicious advertising, browser redirects,
.tro Files Virus – Overview
As identified by security researchers the so-called .tro files virus is a strain of STOP ransomware. After the release of a series of other strains of the same ransomware family including
Now let’s review what happens when this threat manages to run its payload file on a target system.
Initially, .tro files virus establishes a bunch of malicious files on the system. For their location, the ransomware may use the following folders:
- %Roaming%
- %Windows%
- %AppData%
- %Local%
- %Temp%
With the help of all established malicious files, .tro ransomware interferes with the settings of essential system components. One of the affected components is likely to be the Registry Editor. Since it is a hierarchical database that keeps low-level settings for the Windows operating system, ransomware is often set to access and plague it. This could be explained by the fact that some registry keys’ functionalities enable the ransomware to load on each system start.
Soon after .tro implements all infection stages it drops a text file called _openme.txt and loads it on the screen. With the help of this file, it informs you about its presence and attempts to blackmail you into paying ransom for files decryption. Below you could see the whole message:
———————————————- ALL YOUR FILES ARE ENCRYPTED ———————————————–
Don’t worry, you can return all your files!
All your files documents, photos, databases and other important are encrypted with strongest encryption and unique key.
The only method of recovering files is to purchase decrypt tool and unique key for you.
This software will decrypt all your encrypted files.
What guarantees do we give to you?
You can send one of your encrypted file from your PC and we decrypt it for free.
But we can decrypt only 1 file for free. File must not contain valuable information.
You can download video overview decrypt tool:
https://www.sendspace.com/file/1sg7f3
Don’t try to use third-party decrypt tools because it will destroy your files.
Discount 50% available if you contact us first 72 hours.
—————————————————————————————————————————
To get this software you need write on our e-mail:
pdfhelp@india.com
Reserve e-mail address to contact us:
pdfhelp@firemail.cc
Your personal ID:
023yGviLejMpPrYi4WJ57YtpGGy3OgA3ukBbPTW4dJt
Beware that the decryption tool possessed by hackers is NOT the only method of recovering files. There are several alternative data recovery approaches that may be helpful for the restore process of corrupted files. Furthermore, there is no guarantee that hackers will send you a working decryption key even when the ransom is paid.
.tro Files Virus – Encryption Process
Once the encryption stage occurs, .tro fies virus activates an in-built module which is set to scan the system for certain types of files. When this infection module detects a file that belongs to the target data list of .tro ransomware, it utilizes sophisticated cipher algorithm that changes the original code of the file. Due to the applied changes you may not be able to access all of the following files:
- Audio files
- Video files
- Document files
- Image files
- Backup files
- Banking credentials, etc
A sure trait of a file encrypted by .tro files virus is an extension of the same name .tro appended to its name.
Remove .tro Files Virus and Restore Data
The ransomware associated with .tro 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 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 future, you should consider the installation of a reliable anti-malware program. As an additional security layer that could prevent the occurrence of ransomware attacks you could install an
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 you begin with the data recovery process, you should back up all encrypted files to an external drive as this will help you to prevent their irreversible loss.
Gergana Ivanova
Gergana has a bachelor's degree in Marketing. She has been with the STF team for five years, researching malware, reporting on the latest computer infections, and following digital marketing trends.
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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.
- Guide 1: How to Remove .tro Files Virus from Windows.
- Guide 2: Get rid of .tro Files Virus from Mac OS X.
How to Remove .tro Files Virus from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove .tro Files Virus
Step 2: Uninstall .tro Files Virus 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:
Follow the instructions above and you will successfully uninstall most programs.Step 3: Clean any registries, created by .tro Files Virus 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 .tro Files Virus there. This can happen by following the steps underneath:
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.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 .tro Files Virus with SpyHunter Anti-Malware Tool
Step 5 (Optional): Try to Restore Files Encrypted by .tro Files Virus.
Ransomware infections and .tro Files Virus 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 top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.
Get rid of .tro Files Virus from Mac OS X.
Step 1: Uninstall .tro Files Virus and remove related files and objects
1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:
- 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 .tro Files Virus 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:
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.
Step 3 (Optional): Try to Restore Files Encrypted by .tro Files Virus.
Ransomware infections and .tro Files Virus 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 top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.
.tro Files Virus FAQ
What is .tro Files Virus ransomware and how does it work?
.tro Files Virus 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 .tro Files Virus ransomware infect my computer?
Via several ways..tro Files Virus 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 .tro Files Virus 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 ..tro Files Virus files?
You can't. At this point the ..tro Files Virus 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 ..tro Files Virus files successfully, then do not despair, because this virus is still new.
One way to restore files, encrypted by .tro Files Virus 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 "..tro Files Virus" files (Other Methods)?
Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore ..tro Files Virus 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 .tro Files Virus 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 .tro Files Virus ransomware and then remove it without causing any additional harm to your important ..tro Files Virus files.
Also, keep in mind that viruses like .tro Files Virus 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.
