This article provides information about a recently found iteration of Yyto ransomware as well as a step-by-step guide that provides removal and data recovery help.
As found by security researchers a new iteration of Yyto ransomware has been released in active attack campaigns. Alike its predecessor this strain of the threat aims to encode valuable data stored on compromised computers’ drives. Contrary to the first Yyto which was detected in May 2017 this new strain uses a contact email as a first distinctive extension instead of the name of the ransom note. So all corrupted files receive the extensions .adapaterson@mail.com.mkmk at the end of their names. They remain inaccessible due to their completely transformed original code. Hackers demand a ransom payment for the unique decryption key that is supposedly able to decrypt data.
Threat Summary
| Name | Yyto |
| Type | Ransomware, Cryptovirus |
| Short Description | A data locker ransomware that utilizes strond cihper algorithm to encrypt valuable files on stored on the infected computer. Threat actors demand a ransom for a decryption solution. |
| Symptoms | Important files are locked and renamed with .adapaterson@mail.com.mkmk extensions. A ransom note forces victims to pay a ransom for a file decryption tool. |
| Distribution Method | Spam Emails, Email Attachments |
| Detection Tool |
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Malware Removal Tool
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User Experience | Join Our Forum to Discuss Yyto. |
| 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. |
Yyto Ransomware – Distribution
Yyto ransomware infection is triggered by an executable file which hackers distribute with the help of various methods. The main one is believed to be email spam campaigns. This method is preferred by bad actors as it allows them to craft email messages in a way that they seem legit and important. Such emails may be sent by the names of representatives of well-known companies or even governmental institutions. While their text messages usually attempt to trick you into downloading an attached file immediately as it contains very important information. Malicious attachments may be present as documents, invoices, tax payments, delivery receipts, reports and other. As they all could trigger the infection code of Yyto ransomware the moment you open such a file on your PC the infection process begins.
For the sake of your security, you could use a free online file extractor each time before you open new file on your PC. Tools of this kind scan the code of each uploaded file for specific malicious traits. After, the scan you could see whether the uploaded file contains malicious elements or not. The information could help you to prevent corrupted files from infecting your PC.
Yyto Ransomware – Overview
Yyto ransomware is a devastating infection that was first detected in May 2017. As found by security researchers now the threat has a new iteration that is mainly associated with the specific extensions .adapaterson@mail.com.mkmk it appends to all corrupted files. An infection with this new Yyto ransomware strain begins after its payload it triggered on the system.
As revealed by the analyses of its payload the attack passes through several infection phases before it implements the encryption phase. At first, Yyto needs to establish all necessary malicious files on the system. Then its code executes them successively in order to plague various system settings. The modifications could enable the ransomware to evade detection and persistent on the device.
Further analyses reveal that some of the files created by Yyto ransomware make use of several dynamic system functionalities in an attempt to leverage system privileges and implement unauthorized changes while remaining undetected.
Following encryption which is examined in detail in the next paragraph, Yyto ransomware drops a ransom note file to inform you about its presence on the system. The message is also likely to notify you about the impact on your sensitive files and instructs you how to pay the ransom to hackers. For the sake of your security, we advise you to refrain from contacting them and paying the demanded ransom as this does not guarantee the recovery of your data. Instead, you could try to overcome the problem with the help of alternative methods. You could find More about them in the removal guide at the end.
Yyto Ransomware – Data Encryption Process
Yyto ransomware is known to use sophisticated cipher algorithm for file corruption. With the help of this cipher, the treat is able to modify the original code of target files and render them completely out of order so you can no longer access the information they store. Each corrupted file can be recognized by the extensions .adapaterson@mail.com.mkmk that the ransomware appends to file name.
Threats of this kind are usually set to scan predefined folders to locate all target files. Eventually you may see all types of files listed below to be encrypted by Yyto ransomware:
- Archives
- Backups
- Images
- Videos
- Music
- Documents
Remove Yyto Ransomware and Restore .adapaterson@mail.com.mkmk Files
Below you could find how to remove Yyto step by step. To remove the ransomware manually you need to have a bit of technical experience and ability to recognize traits of malware files. Beware that ransomware is a threat with highly complex code that plagues not only your files but your whole system. So as recommended by security researchers you need to utilize an advanced anti-malware tool for its complete removal. Such a tool will keep your system protected against devastating threats like Yyto and other kinds of malware that endanger your online security.
After you remove the ransomware make sure to check the “Restore Files” step listed in the guide below. The alternative data recovery methods listed in this step are tested and proved to be some of the most effective ones. But before you take any further actions, don’t forget to back up all encrypted files to an external drive in order 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.
How to Remove Yyto from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove Yyto
Step 2: Uninstall Yyto 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 Yyto 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 Yyto 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 Yyto with SpyHunter Anti-Malware Tool
Step 5 (Optional): Try to Restore Files Encrypted by Yyto.
Ransomware infections and Yyto 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 Yyto from Mac OS X.
Step 1: Uninstall Yyto 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 Yyto 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 Yyto.
Ransomware infections and Yyto 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.
Yyto FAQ
What is Yyto ransomware and how does it work?
Yyto 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 Yyto ransomware infect my computer?
Via several ways.Yyto 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 Yyto 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 .Yyto files?
You can't. At this point the .Yyto 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 .Yyto files successfully, then do not despair, because this virus is still new.
One way to restore files, encrypted by Yyto 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 ".Yyto" files (Other Methods)?
Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .Yyto 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 Yyto 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 Yyto ransomware and then remove it without causing any additional harm to your important .Yyto files.
Also, keep in mind that viruses like Yyto 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.
