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OopsLocker ransomware virus. How to remove? (Uninstall guide)

removal by Gabriel E. Hall - - | Type: Ransomware

After data encryption OopsLocker demands 0.1 Bitcoin

Ransom note by OopsLocker ransomware virus

OopsLocker is a new variant of recently emerged Oops ransomware virus. Malware employs a combination of AES and RSA cryptography and appends .oops extension to each of the targeted files. According to the ransom note, delivered in the oops.exe file, victims need to pay 0.1 Bitcoin for the decryption.

Usually, OopsLocker virus arrives on the system with the help of malicious email attachments. When users open obfuscated Word document and enable macros, ransomware executable is dropped on the system. Then it connects to its Command and Control (C&C) server and downloads new files to the affected system:

  • oops.exe– decryption software,
  • EncryptedFiles.txt – the list of encrypted files on the targeted computer.

Virus installs these files in a new folder called ProgramData in C disk. Here malware also creates EncryptedKey and KeyHash directories where it installs encrypted decryption key and the map of the encrypted files.

OopsLocker ransomware also sends particular information about the computer to the remote C&C server. This data includes:

  • IP address,
  • the version of Windows operating system,
  • keyboard setup,
  • information about computer’s protection and antivirus software.

Then malware settles in, it starts scanning the system looking for the targeted file extensions. The crypto-malware aims at more than 40 different files, including MS Office documents, various image, audio and video files, backups, etc. It locks the files with .oops extension and runs a program window with data recovery options.

In order to decrypt files corrupted by OopsLocker, users have to send an email to only4you@protonmail.com with their computer’s name, Bitcoin address where they have to pay the ransom and attach “EncryptedKey” file. Then victims have to pay 0,1 Bitcoin in a week. Otherwise, the size of the ransom will double every single week.

However, following these instructions may not lead to data recovery. You might just waste more than $200 and sponsor further crook’s projects. There are many cases when cyber criminals did not keep their word and did not provide decryption tool after the payment.[1] Thus, we highly recommend spending your money on professional software that will help to remove OopsLocker, from the device.

Only security software can assure safe and effective ransomware elimination. Trying to locate and delete all malicious files from the system might not end up good. Crypto-malware might affect legitimate processes or use names of real system files, so you can accidentally delete wrong files. To avoid bigger damage, you should perform OopsLocker removal with Reimage or another malware removal program.

Malware enters the device with the help of obfuscated Word file

The main distribution method of the ransomware is malicious spam emails. The executable of crypto-malware is camouflaged and attached to an email as a regular Word file. However, this file has malicious macro commands.

When a user opens this document, he or she receives an alert to enable macros to see the provided content. When a person does that, malicious commands are launched and malware enters the system.

Keep in mind that dangerous letters might look like ordinary emails sent from governmental organizations, delivery services or popular online shops, such as Amazon. However, before clicking provided documents, you have to make sure that it’s not a phishing email.[2]

However, security experts from No Virus[3] point out that crooks are getting better and better in social engineering. Thus, you should also be critical. If you do not expect to receive a statement from a bank or haven’t ordered any parcel, you should delete such emails immediately without checking what hides inside.

Withdrawal of the OopsLocker virus

As we have mentioned earlier, OopsLocker removal is achieved with the help of security software. We recommend to our readers to use Reimage, Malwarebytes MalwarebytesCombo Cleaner or Plumbytes Anti-MalwareMalwarebytes Malwarebytes to terminate the virus safely from the system.

Ransomware might not allow installation of security software or prevent from installing or running it. If you have encountered one of these problems, you should check our instructions below. They will explain how to activate antivirus and remove OopsLocker automatically.

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Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with Malwarebytes.
Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with Combo Cleaner.

To remove OopsLocker virus, follow these steps:

Remove OopsLocker using Safe Mode with Networking

If you cannot run security software, restart the computer to the Safe Mode with Networking. It helps to disable OopsLocker and perform its removal.

  • Step 1: Reboot your computer to Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Safe Mode with Networking from the list Select 'Safe Mode with Networking'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Networking in Startup Settings window. Select 'Enable Safe Mode with Networking'
  • Step 2: Remove OopsLocker

    Log in to your infected account and start the browser. Download Reimage or other legitimate anti-spyware program. Update it before a full system scan and remove malicious files that belong to your ransomware and complete OopsLocker removal.

If your ransomware is blocking Safe Mode with Networking, try further method.

Remove OopsLocker using System Restore

System Restore also helps to disable the virus in order to delete it automatically.

  • Step 1: Reboot your computer to Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of OopsLocker. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with Reimage and make sure that OopsLocker removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove OopsLocker from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by 2-spyware.com security experts.

If your files are encrypted by OopsLocker, you can use several methods to restore them:

Try Data Recovery Pro to set free files with .oops extension

This professional software helps to recover deleted, corrupted and some of the encrypted files. Users noticed that it's irreplaceable recovery tool after ransomware attack.

  • Download Data Recovery Pro;
  • Follow the steps of Data Recovery Setup and install the program on your computer;
  • Launch it and scan your computer for files encrypted by OopsLocker ransomware;
  • Restore them.

Windows Previous Versions feature allows copying individual files

If System Restore has been activated on your PC before OopsLocker attack, follow the steps to copy individual files:

  • Find an encrypted file you need to restore and right-click on it;
  • Select “Properties” and go to “Previous versions” tab;
  • Here, check each of available copies of the file in “Folder versions”. You should select the version you want to recover and click “Restore”.

ShadowExplorer restores files from Shadow Volume Copies

Malware is not supposed to delete Shadow Volume Copies of the targeted files. Thus, you should be able to recover data using this tool:

  • Download Shadow Explorer (http://shadowexplorer.com/);
  • Follow a Shadow Explorer Setup Wizard and install this application on your computer;
  • Launch the program and go through the drop down menu on the top left corner to select the disk of your encrypted data. Check what folders are there;
  • Right-click on the folder you want to restore and select “Export”. You can also select where you want it to be stored.

OopsLocker decryptor hasn't been released yet.

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from OopsLocker and other ransomwares, use a reputable anti-spyware, such as Reimage, Malwarebytes MalwarebytesCombo Cleaner or Plumbytes Anti-MalwareMalwarebytes Malwarebytes

About the author

Gabriel E. Hall
Gabriel E. Hall - Passionate web researcher

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References