This article explains the issues that occur when .vaca files virus infects a target system. It also provides a step-by-step guide on how to remove malicious files and how to potentially recover files encrypted by this ransomware.
The .vaca files virus is data locker ransomware identified as a strain of Xorist threat family. The purpose of this threat is to contaminate essential computer settings that will enable it to encode target types of files with the help of a sophisticated cipher algorithm. Once it encrypts these files, the ransomware appends the extension .vaca to their names and leaves them completely inaccessible. As a consequence hackers attempt to extort a ransom payment.
Threat Summary
| Name | .vaca Files Virus |
| Type | Ransomware, Cryptovirus |
| Short Description | The threat encrypts target files stored on your computer, marks them with the .vaca extension and extorts a ransom by displaying a ransom message. |
| Symptoms | Important files are encoded and renamed with .vaca extension. You cannot open them. Hackers demand a ransom payment. |
| Distribution Method | Spam Emails, Email Attachments |
| Detection Tool |
See If Your System Has Been Affected by malware
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Malware Removal Tool
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User Experience | Join Our Forum to Discuss .vaca 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. |
.vaca Files Virus – Distribution
Security researchers’ reports indicate that this .vaca Xorist ransomware is currently circling around the net in active attack campaigns. Attack campaigns could be set against users worldwide.
The most probable spread channel is malspam. Malspam is a technique that enables hackers to deliver their malicious code on users’ devices with the help of specially crafted emails. Such emails usually contain one or more of the following components:
- A link to compromised web page that is set to download and execute infection files directly on the PC. The URL address to this page may be presented in the form of an in-text link, banner, image, button, or full URL address.
- A malicious file attachment that is presented as legitimate document by the text message. It could be uploaded in a .rar or .zip archive. Such a file could be set to evade active security measures and trick you into running the ransomware on your PC.
Other channels that may be part of the distribution strategy for .vaca files virus are malvertising, freeware installers, corrupted web pages, fake software updates, compromised software setups, files shared on forums, and others.
.vaca Files Virus – Overview
The infection process with .vaca files virus is triggered by the execution of its payload file on the system. Since this file alone could not fulfill the attack to its very end, .vaca cryptovirus establishes several other malicious files in some of the following folders:
- %AppData%
- %Local%
- %LocalLow%
- %Roaming%
- %Temp%
In order to establish these malicious files on the system, .vaca files virus may need to connect a remote command and control server so it can download the files from it. It could also be configured to create them directly on the system. When the threat establishes all needed infection files, it starts executing them in a strictly defined order.
As a result, the settings of various essential system components could be infected. One of these components is likely to be the Registry Editor. To be more precise it’s the registry keys Run and RunOnce that are likely to be infected by .vaca Xorist ransomware. So here are the exact registry locations that should be checked for malicious entries:
→ 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
The reason for the contamination of these keys is their ability to execute automatically various system processes as well as processes associated with installed apps So once .vaca ransomware has its malicious entries there, it becomes one of the first things that load on your system every time you start it.
Another reason is the possibility to load its ransom note on the screen at the end of the infection. As of the note, it is dropped in a file called HOW TO DECRYPT FILES.txt. What you could read when you open this file is the following:
Attention! All your files are encrypted!
To restore your files and access them,
please send an SMS with the text [ID number] to [hackers’ number].You have N attempts to enter the code.
When that number has been exceeded,
all the data irreversibly is destroyed.
Be careful when you enter the code!
Apparently, the purpose of this file is to blackmail you into contacting hackers in order to receive further instructions on ransom payment by them. What we could advise you is to avoid what this message states and attempt to cope with ransomware impacts with the help of secure methods that won’t expose your system, privacy, and money at the risk of further abuses.
.vaca Files Virus – Encryption Process
Previous iterations of Xorist ransomware were reported to encrypt target files by using the XOR or TEA cipher algorithm. However, at this point, it is confirmed whether .vaca cryptovirus encodes files with the same ciphers or set to use other like RSA and AES.
However, like its predecessors .vaca is likely to scan infected systems for all files that have one of following extensions. Whenever a match is available it encodes the file by transforming parts of its original code:
→.zip, .rar, .7z, .tar, .gzip, .jpg, .jpeg, .psd, .cdr, .dwg, .max, .bmp, .gif, .png, .doc, .docx, .xls, .xlsx, .ppt, .pptx, .txt, .pdf, .djvu, .htm, .html, .mdb, .cer, .p12, .pfx, .kwm, .pwm, .1cd, .md, .mdf, .dbf, .odt, .vob, .ifo, .lnk, .torrent, .mov, .m2v, .3gp, .mpeg, .mpg, .flv, .avi, .mp4, .wmv, .divx, .mkv, .mp3, .wav, .flac, .ape, .wma, .ac3
This ransomware marks all corrupted files with an extension of the same name .vaca. The appearance of this extension in the name of a file is a sure sign that you won’t be able to open this file. The good news is that specialists from Kaspersky team have released a decryptor for the previous Xorist version that is likely to be working for .vaca files recovery tool. Check the guide below for this tool.
Remove .vaca Files Virus and Restore Data
The Xorist ransomware strain associated with .vaca 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 regularly 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 the 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 [wplinkpreview url=”https://sensorstechforum.com/the-most-popular-free-anti-ransomware-tools/”]anti-ransomware tool.
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
Highly motivated writer with 5+ years of experience writing for ransomware, malware, adware, PUPs, and other cybersecurity-related issues. As a writer, I strive to create content that is based on thorough technical research. I find joy in the process of creating articles that are easy to understand, informative, and useful. Follow me on Twitter (@IRGergana) for the latest in the field of computer, mobile, and online security.
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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 .vaca Files Virus from Windows.
- Guide 2: Get rid of .vaca Files Virus from Mac OS X.
How to Remove .vaca Files Virus from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove .vaca Files Virus
Step 2: Uninstall .vaca 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 .vaca 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 .vaca 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 .vaca Files Virus with SpyHunter Anti-Malware Tool
Step 5 (Optional): Try to Restore Files Encrypted by .vaca Files Virus.
Ransomware infections and .vaca 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 .vaca Files Virus from Mac OS X.
Step 1: Uninstall .vaca 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 .vaca 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 .vaca Files Virus.
Ransomware infections and .vaca 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.
.vaca Files Virus FAQ
What is .vaca Files Virus ransomware and how does it work?
.vaca 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 .vaca Files Virus ransomware infect my computer?
Via several ways..vaca 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 .vaca 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 ..vaca Files Virus files?
You can't. At this point the ..vaca 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 ..vaca Files Virus files successfully, then do not despair, because this virus is still new.
One way to restore files, encrypted by .vaca 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 "..vaca 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 ..vaca 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 .vaca 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 .vaca Files Virus ransomware and then remove it without causing any additional harm to your important ..vaca Files Virus files.
Also, keep in mind that viruses like .vaca 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.
