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.Explorer v1.58 Virus (Remove Ransomware + Restore Files)

This blog post is created to help you removeExplorer v1.58 ransomware virus and show you how to restore files encrypted with the .explorer file extension.

A wallpaper with the e-mail decrypter.files@mail.ru has started appearing randomly on the computers of victims on different locations. The wallpaper is associated with a ransomware virus, known as Explorer v1.58 and this virus uses the AES encryption algorithm to encode the files on the computers that have been infected by it. The ransomware then drops a ransom note, named READ_IT.txt and just like the wallpaper it demands for victims to make a hefty ransom payoff in order to get their files decrypted.

Threat Summary

Name Explorer v1.58
Type Ransomware
Short Description The ransomware encrypts files on your computer and changes the wallpaper with instructions to contact an e-mail to make a payment in order to get the files back.td>
Symptoms Explorer ransomware encrypts the files and ads the .explorer file extension to them. Also changes the wallpaper with the image above and drops a ransom note file, named READ_IT.txt.
Distribution Method Spam Emails, Email Attachments
Detection Tool See If Your System Has Been Affected by malware

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Malware Removal Tool

User Experience Join Our Forum to Discuss Explorer v1.58.
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.

How Does Explorer v1.58 Spread

In order to be widespread and infect the maximum amount of victims, the virus spreads a loader file associated with it’s primary executable, named “explerer.exe” with the following parameters:

The malicious executable of the ransomware virus can enter your computer primarily via spam e-mails. Such messages may advertise a loader that may drop the executable after it was opened. The malicious file may pose as legitimate document, such as Invoice, a receipt or a banking statement of suspicious activity in the banking account. In addition to this a message may come together with the attachment to convince victims in order to open the attachment. Most sophisticated spam mails may even use your name in the e-mail body.

Other methods besides this primary one include the usage of several different types of fake setups, key generators, software activators or other fake software uploaded on shady websites.

Explorer v1.58 Ransomware Analysis

When an infection takes place by the .explorer file virus, the victim may notice a brief slowdown on his computer. At this moment, the explorer virus aims to perform multiple different activities on the computer. One of them may be to begin modifying the primary system processes by injecting malicious code in them. It may attack the user UAC (User Account Control) and via it and other Windows modules obtain administrative permissions. These permissions allow the virus to read and write everything on your infected computer.

After obtaining permissions, the Explorer v1.58 threat may begin to modify the Windows Registry Editor, more specifically attack the following Windows Registry 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

Among the activity of Explorer v1.58 is to likely delete the backups on your computer including the shadow volume copies. This is achievable by the following administrative Windows Commands:

  • vssadmin.exe
  • bcedit

Among the activity of Explorer v1.58 is to change the wallpaper of the computer infected by it is to drop it’s ransom note and change the wallpaper o the victim’s computer. The ransom note is named READ_IT.txt and has the same message to the message in the wallpaper it changes:

Explorer v1.58 – Encryption Process

After the Explorer v1.58 ransomware has infected your computer, it will use the AES encryption algorithm to render the files on it, non-usable. The algorithm aims to replicate key data from the original file. Explorer v1.58 does not encrypt the whole file, since if it does this to each file, it will take a lot of time for the virus to complete the process. Instead, it only encrypts enough of the files to render them no longer openable. The Explorer virus targets primarily the following file types for the encryption process:

  • Music and other audio file types.
  • Image files.
  • Photoshop documents.
  • Microsoft Office documents.
  • Adobe Reader .PDF files.
  • Virtual Drives.
  • Archives.

After the encryption process has completed the Explorer v1.58 ransomware virus aims to add the .explorer file extension as a suffix to the encrypted files:

Remove Explorer v1.58 and Restore .explorer Files

For the removal process of Explorer ransomware, it is strongly advisable to first back up your encrypted files and then focus on the removal. We advise you to follow the removal instructions below, since they are divided in manual as well as automatic removal instructions. Since manual removal may be a risky process, because Explorer v1.58 may tamper with system files, experts often advise to use a ransomware-specific malware removal tool for safe deletion of all files associated with Explorer v1.58.

Furthermore, if you want to restore files that have been encrypted by the Explorer v1.58 virus, we advise you to follow the alternative instructions in step “2” under “Automatic Removal” below. They are not a direct solution, but are a good temporary choice to recover as many files as you can, while a decrypter for the virus is released, which we will update and link here as soon as it is out.

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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.

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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.


OFFER

REMOVE IT NOW (PC)
with Anti-Malware
We recommend you to download SpyHunter and run free scan to remove all virus files on your PC. This saves you hours of time and effort compared to doing the removal yourself.
SpyHunter 5 free remover allows you, subject to a 48-hour waiting period, one remediation and removal for results found. Read EULA and Privacy Policy


Windows Mac OS X

How to Remove Explorer v1.58 from Windows.


Step 1: Boot Your PC In Safe Mode to isolate and remove Explorer v1.58

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 Explorer v1.58 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 Explorer v1.58 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 Explorer v1.58 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 Explorer v1.58 with SpyHunter Anti-Malware Tool

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


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.

SpyHunter5-update-2018


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

SpyHunter5-Free-Scan-2018


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.

SpyHunter-5-Free-Scan-Next-2018

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

Step 5 (Optional): Try to Restore Files Encrypted by Explorer v1.58.

Ransomware infections and Explorer v1.58 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:

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 Explorer v1.58 from Mac OS X.


Step 1: Uninstall Explorer v1.58 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 Explorer v1.58:

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 Explorer v1.58. 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 Explorer v1.58. 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 Explorer v1.58 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 Explorer v1.58. 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 Explorer v1.58:


Download

SpyHunter for Mac



Step 3 (Optional): Try to Restore Files Encrypted by Explorer v1.58.

Ransomware infections and Explorer v1.58 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:

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.


Explorer v1.58 FAQ

What is Explorer v1.58 ransomware and how does it work?

Explorer v1.58 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 Explorer v1.58 ransomware infect my computer?

Via several ways.Explorer v1.58 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 Explorer v1.58 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 .Explorer v1.58 files?

You can't. At this point the .Explorer v1.58 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 .Explorer v1.58 files successfully, then do not despair, because this virus is still new.

One way to restore files, encrypted by Explorer v1.58 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 ".Explorer v1.58" files (Other Methods)?

Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .Explorer v1.58 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 Explorer v1.58 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 Explorer v1.58 ransomware and then remove it without causing any additional harm to your important .Explorer v1.58 files.

Also, keep in mind that viruses like Explorer v1.58 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.

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