Yyto virus is a dangerous ransomware virus that encrypts user data with a strong cipher and renames all data based on a predefined template: Yyto. The malware can be removed by following our in-depth instructions – they show victims how to remove the virus using an easy to use solution and how to restore the files using a professional data recovery software.
Manual Removal Guide
Recover Encrypted Files
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How Does Yyto File Virus Infiltrate the System?
The computer criminals distribute the Yyto virus worldwide using different methods. One of the primary ones is the use of email messages that contain the virus payload either attached or linked. The criminals make the messages appears as legitimate and important notices or emails from companies or institutions. They may also opt to use infected office documents (spreadsheets or rich text documents) that contain dangerous scripts that deliver the threat.
Browser hijackers which are dangerous addons are another popular source. Upon installation they modify essential application settings such as the default home page, search engine and new tabs page. They also harvest sensitive information such as any stored history, bookmarks, cache, credentials, form data and etc.
Hacked or hacker-controlled download sites and BitTorrent trackers are one of the primary Yyto virus distribution methods. The criminals distribute the binary under various names or bundled with a popular free software.
Direct hacker intrusion attempts can be carried out against the victims. The criminals use automated applications that seek outdated software installed on the victim computers. This is why we recommend that everyone update their software and operating system.
Related: vCrypt1 Ransomware Virus, Extractor Ransomware
Infection Flow of Yyto File Virus
The Yyto virus is a newly discovered ransomware that has been identified by security researchers in an ongoing attack campaign. According to the initial security analysis ransomware does not belong to one of the famous malware families, this means that it has been made by an unknown hacker or a hacker collective.
Yyto virus follows the usual ransomware behavior patterns by doing several system checks. During the analysis we have detected that it is able to query information related to the infected machine.
There are several unusual characteristics, including the ability to write to the desktop.ini file. It controls the desktop settings and its modification may lead to folder or file hiding. In addition the Yyto virus uses various fingerprint scans to determine the exact Microsoft Windows version.
Detailed information is collected including: machine name, machine version, language settings. Stealth protection has also been deployed by the hacker operators of the Yyto virus as the engine checks for the presence of a debugger, sandbox or another analysis environment. If such are detected the malware automatically deletes tself to avoid detection.
When the Yyto virus infects the affected computer it gains a wide range of privileges – it can drop and modify files and folders, including those found in the Windows directory.
When all checks have been made the virus engine proceeds to encrypt the target data by using a predefined list of file type extension. Depending on the configuration done by the hackers it may encrypt a large number of extensions – archives, backups, databases, music, videos, photos and etc.
All affected data is renamed using the following pattern: [filename].read_to_txt_file.yyto.
The ransomware note contains the instructions crafted in a help_to_decrypt.txt file:
If you don’t have a email in TOR network:
1) Download and install the browser for the TOR network: https://www.torproject.org/download/download-easy.html
2) Launch browser and go to the link (create email in TOR network): torbox3uiot6wchz.onion
3) Write on email: [email protected]
4) Wait for a response.
DON’T WRITE FROM NOT TOR EMAIL. MESSAGES WILL NOT BE RECEIVED AND YOU WILL NOT RECEIVE AN UNLOCK KEY.
Your personal key:
8f51a85f140*****
The hackers instruct the victims to visit their payment gateway located on the anonymous TOR network. This is done by first downloading the TOR browser and then visiting the specified address. The criminals request the victims to create their own anonymous email address using a service available on the network. They need to contact via the provided email. A ransomware payment sum is not specified which means that the hackers can extort the victims based on the compromised data.
All compromised machines are assigned an unique infection ID that is calculated using data from the harvested system and/or user information.
Unlike other similar malware the current versions do not communicate with remote C&C servers or the hackers. We suspect that network communication features will be added in a future version.
Remove Yyto File Virus and Restore Data
WARNING! Manual removal of Yyto file virus requires being familiar with system files and registries. Removing important data accidentally can lead to permanent system damage. If you don’t feel comfortable with manual instructions, download a powerful anti-malware tool that will scan your system for malware and clean it safely for you.
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Yyto File Virus – Manual Removal Steps
Start the PC in Safe Mode with Network
This will isolate all files and objects created by the ransomware so they will be removed efficiently. The steps bellow are applicable to all Windows versions.
1. Hit the WIN Key + R
2. A Run window will appear. In it, write msconfig and then press Enter
3. A Configuration box shall appear. In it Choose the tab named Boot
4. Mark Safe Boot option and then go to Network under it to tick it too
5. Apply -> OK
Show Hidden Files
Some ransomware threats are designed to hide their malicious files in the Windows so all files stored on the system should be visible.
1. Open My Computer/This PC
2. Windows 7
- – Click on Organize button
– Select Folder and search options
– Select the View tab
– Go under Hidden files and folders and mark Show hidden files and folders option
3. Windows 8/ 10
- – Open View tab
– Mark Hidden items option
4. Click Apply and then OK button
Enter Windows Task Manager and Stop Malicious Processes
1. Hit the following key combination: CTRL+SHIFT+ESC
2. Get over to Processes
3. When you find suspicious process right click on it and select Open File Location
4. Go back to Task Manager and end the malicious process. Right click on it again and choose End Process
5. Next, you should go folder where the malicious file is located and delete it
Repair Windows Registry
1. Again type simultaneously the WIN Key + R key combination
2. In the box, write regedit and hit Enter
3. Type the CTRL+ F and then write the malicious name in the search type field to locate the malicious executable
4. In case you have discovered registry keys and values related to the name, you should delete them, but be careful not to delete legitimate keys
Click for more information about Windows Registry and further repair help
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Recover Encrypted Files
WARNING! All files and objects associated with Blooper file virus should be removed from the infected PC before any data recovery attempts. Otherwise the virus may encrypt restored files. Furthermore, a backup of all encrypted files stored on external media is highly recommendable.
1. Use present backups
2. Use professional data recovery software
Stellar Phoenix Data Recovery – a specialist tool that can restore partitions, data, documents, photos, and 300 more file types lost during various types of incidents and corruption.
3. Using System Restore Point
- – Hit WIN Key
– Select “Open System Restore” and follow the steps
4. Restore your personal files using File History
- – Hit WIN Key
– Type restore your files in the search box
– Select Restore your files with File History
– Choose a folder or type the name of the file in the search bar
– Hit the “Restore” button
Preventive Security Measures
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