.yum Files Virus - How to Remove IT

by Ventsislav Krastev | March 13, 2019 | 0 Comments file-encryption, malware, ransomware

Threat Summary .yum Files Virus – Update April 2019 .yum Files Ransomware – Distribution .yum Files Virus – More Information .yum Files Virus – Encryption Remove .yum Ransomware and Try Restoring Files

This article has been created to explain what is the .yum file ransomware and how you can effectively remove it from your computer.

The .yum file ransomware is the type of virus whose main idea is to slither onto your computer, encrypt the files in it and then aims to scare you off into paying ransom in order to get your files to work once again. The ransomware may perform various different types of activities on the computers of victims which may lead to your files no longer being able to be opened. To decrypt the files, the .yum virus may leave a ransom note explaining that you must pay money in the form of BitCoin to recover your data, which is strongly not advisable. If you want to remove .yum files virus from your computer and try to restore your data, we would strongly recommend that you follow the removal steps underneath this article.

Threat Summary

Name	.yum Files Virus
Type	Ransomware, Cryptovirus
Short Description	Aims to encrypt files and extort victims into paying cryptocurrency to get their files to work.
Symptoms	Files can no longer be opened and the .yum extension Is added to them.
Distribution Method	Spam Emails, Email Attachments, Executable files
Detection Tool	See If Your System Has Been Affected by malware Download Malware Removal Tool
User Experience	Join Our Forum to Discuss .yum 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.

.yum Files Virus – Update April 2019

A decryption tool for the .yum Files Virus got released by EMSIsoft, that you can download from the link provided here – Emsisoft Decrypter for Planetary Ransomware (.mira, .pluto, .Neptune, .yum). You will need a ransom note from this ransomware in order to use the decrypter.

.yum Files Ransomware – Distribution

Viruses, like the .yum threat are spread in various manners, but the main one which is typical for such threats is e-mail spam. Such spam messages may replicate the virus files of .yum Ransomware as some sort of important attachments to the e-mail. The ransomware virus could also include e-mail text that is very convincing, like pretend that your license for a service has expired or that your online purchase is revoked, for example.

Anther way via which this nasty virus may have entered your computer system is likely done via the virus being spread by being uploaded on websites, where it patiently waits to be downloaded and executed. Such files often turn out to be fake versions of:

Setups.
Cracks.
Patches.
License activation programs.
Key generators.

.yum Files Virus – More Information

Once it has already compromised your computer, the .yum file ransomware may begin it’s nasty activities. First, the virus may situate its malicious files on your computer as if they were legitimate files. They may reside in the following Windows directories:

%AppData%
%Local%
%LocalLow%
%Roaming%
%Temp%

Once the .yum ransomware has dropped the files on your computer, the virus may then begin to create mutexes in Windows. As soon as this is done, the .yum ransomware may perform a check if it is dropped on a real Windows computer or if it’s running in a virtual operating system. If it is running In a virtual environment, then .yum ransomware may self-delete. Not only this, but the .yum virus may also check if it has already infected your computer in the past and if so, the ransomware may also self-erase its files.

In addition to checks, .yum ransomware may also do a check on your IP address and MAC address as well. Then, the virus may run the following commands in Windows Command Prompt without you even noticing it:

→ sc stop VVS
sc stop wscsvc
sc stop WinDefend
sc stop wuauserv
sc stop BITS
sc stop ERSvc
sc stop WerSvc
cmd.exe /C bcdedit /set {default} recoveryenabled No
cmd.exe /C bcdedit /set {default} bootstatuspolicy ignoreallfailures
C:\Windows\System32\cmd.exe” /C vssadmin.exe Delete Shadows /All /Quiet

These commands may effectively delete the shadow copies on the compromised computer and disable Windows Recovery services. The .yum virus may do this to prevent you from recovering your files via these services.

Futhermore, the .yum files virus may also create registry strings with random names in the following Windows sub-keys:

→ 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
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\Background
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Personalization
HKEY_CURRENT_USER\Control Panel\Desktop\ScreenSaveTimeOut
HKEY_CURRENT_USER\Control Panel\Desktop

.yum Files Virus – Encryption

Once the .yum virus infects your computer, all of it’s activities may be done in a matter of seconds and then, the virus may get to the file encryption part. The encryption is usually done either by copying your original files and then creating their encrypted analogues that cannot be opened and have the .yum extension:

The files for which the .yum ransomware scans for to encrypt are usually the following types:

Document file types.
Videos.
Images.
Archives.
Audio files.
Virtual drive files.
Presentation files.
Photoshop files.
Database files.

Once the files are encrypted, the .yum virus may generate a unique decryption key which may be private and public. The private key may be encrypted with another cipher or deleted. This makes the cyber-criminals the only ones in power to decrypt your files, since they receive all decryption keys. However, paying ransom to those crooks is highly inadvisable, because you cannot fully trust them with your files.

Remove .yum Ransomware and Try Restoring Files

The .yum ransomware should not be underestimated and you should do a fresh backup of your files before actually trying to remove this virus.

The .yum files virus is the type of ransomware whose main idea is to convince users to pay ransom. To remove it safely you should follow the removal steps underneath. If the first two steps do not seem to remove the .yum ransomware permanently from your computer, we strongly suggest using the automatic removal instructions underneath them. They include scanning your PC with an advanced anti-malware software, which is the preferred solution by most cyber-security experts. Such software aims to effectively scan your computer against all forms of malware threats and remove them effectively.

If you want to try and restore files, encrypted by this ransomware on your computer, we strongly suggest that you try the methods in the “Try to restore” step below. They may not restore all your files, but with their aid, you could be able to recover at least some of them.

Ventsislav Krastev

Ventsislav is a cybersecurity expert at SensorsTechForum since 2015. He has been researching, covering, helping victims with the latest malware infections plus testing and reviewing software and the newest tech developments. Having graduated Marketing as well, Ventsislav also has passion for learning new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management, Network Administration and Computer Administration of System Applications, he found his true calling within the cybersecrurity industry and is a strong believer in the education of every user towards online safety and security.

How to Remove .yum Files Virus from Windows.

Step 1: Boot Your PC In Safe Mode to isolate and remove .yum Files Virus

OFFER

Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!

We Recommend To Scan Your PC with SpyHunter

Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter's malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria

1. Hold Windows key() + R

2. The "Run" Window will appear. In it, type "msconfig" and click OK.

3. Go to the "Boot" tab. There select "Safe Boot" and then click "Apply" and "OK".

Tip: Make sure to reverse those changes by unticking Safe Boot after that, because your system will always boot in Safe Boot from now on.

4. When prompted, click on "Restart" to go into Safe Mode.

5. You can recognise Safe Mode by the words written on the corners of your screen.

Step 2: Uninstall .yum 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:

1. Hold the Windows Logo Button and "R" on your keyboard. A Pop-up window will appear.

2. In the field type in "appwiz.cpl" and press ENTER.

3. This will open a window with all the programs installed on the PC. Select the program that you want to remove, and press "Uninstall"

Follow the instructions above and you will successfully uninstall most programs.

Step 3: Clean any registries, created by .yum 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 .yum Files Virus there. This can happen by following the steps underneath:

1. Open the Run Window again, type "regedit" and click OK.

2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.

3. You can remove the value of the virus by right-clicking on it and removing it.

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.

IMPORTANT!
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 .yum Files Virus with SpyHunter Anti-Malware Tool

1. Click on the "Download" button to proceed to SpyHunter's download page.

Download

Malware Removal Tool

It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria.

2. After you have installed SpyHunter, wait for it to update automatically.

3. After the update process has finished, click on the 'Malware/PC Scan' tab. A new window will appear. Click on 'Start Scan'.

4. After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the 'Next' button.

If any threats have been removed, it is highly recommended to restart your PC.

Step 5 (Optional): Try to Restore Files Encrypted by .yum Files Virus.

Ransomware infections and .yum 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.

1. Download the reccomended Data Recovery software by clicking on the link underneath:

EaseUS Data Recovery Software

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.

Windows Mac OS X

Get rid of .yum Files Virus from Mac OS X.

Step 1: Uninstall .yum Files Virus and remove related files and objects

OFFER

Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!

We Recommend To Scan Your Mac with SpyHunter for Mac

Keep in mind, that SpyHunter for Mac needs to purchased to remove the malware threats. Click on the corresponding links to check SpyHunter’s EULA and Privacy Policy

1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:

2. Find Activity Monitor and double-click it:

3. In the Activity Monitor look for any suspicious processes, belonging or related to .yum Files Virus:

Tip: To quit a process completely, choose the “Force Quit” option.

4. Click on the "Go" button again, but this time select Applications. Another way is with the ⇧+⌘+A buttons.

5. In the Applications menu, look for any suspicious app or an app with a name, similar or identical to .yum Files Virus. If you find it, right-click on the app and select “Move to Trash”.

6: Select Accounts, after which click on the Login Items preference. Your Mac will then show you a list of items that start automatically when you log in. Look for any suspicious apps identical or similar to .yum Files Virus. Check the app you want to stop from running automatically and then select on the Minus (“-“) icon to hide it.

7: Remove any left-over files that might be related to this threat manually by following the sub-steps below:

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 .yum 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:

Disclaimer! If you are about to tamper with Library files on Mac, be sure to know the name of the virus file, because if you delete the wrong file, it may cause irreversible damage to your MacOS. Continue on your own responsibility!

1: Click on "Go" and Then "Go to Folder" as shown underneath:

2: Type in "/Library/LauchAgents/" and click Ok:

3: Delete all of the virus files that have similar or the same name as .yum Files Virus. If you believe there is no such file, do not delete anything.

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.

Click the button below below to download SpyHunter for Mac and scan for .yum Files Virus:

Download

SpyHunter for Mac

Step 3 (Optional): Try to Restore Files Encrypted by .yum Files Virus.

1. Download the reccomended Data Recovery software by clicking on the link underneath:

EaseUS Data Recovery Software

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.

.yum Files Virus FAQ

What is .yum Files Virus ransomware and how does it work?

.yum 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 .yum Files Virus ransomware infect my computer?

Via several ways..yum 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 .yum 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 ..yum Files Virus files?

You can't. At this point the ..yum 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 ..yum Files Virus files successfully, then do not despair, because this virus is still new.

One way to restore files, encrypted by .yum 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 "..yum 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 ..yum 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 .yum 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 .yum Files Virus ransomware and then remove it without causing any additional harm to your important ..yum Files Virus files.

Also, keep in mind that viruses like .yum 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.

How to 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.

.yum Files Virus – How to Remove It