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Remove .73i87a Ransomware and Restore Encrypted Files

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A new ransomware has been reported over security forums to encrypt massively user file s with the .73i87a extension using infected setup programs. One user reported that the downloaded setup file was different than what he believed to have downloaded – a GPS software called iGO 8.0. Users who have become victims of the .73i87a ransomware are strongly advised to remove the ransomware first before starting to restore their files, instructions for which we have after this report.

Name.73i87a Ransomware
TypeRansomware Trojan
Short DescriptionThe malware may encrypt user files, asking for ransom payment to decrypt them.
SymptomsUser may witness a ransom note plus his files becoming corrupt and having the .73i87a extension after their names.
Distribution MethodVia PUPs, installed by bundling (Browser Hijackers) or by visiting a suspicious third-party site that is advertising it.
Detection ToolDownload Malware Removal Tool, to See If Your System Has Been Affected by .73i87a Ransomware
User ExperienceJoin our forum to follow the discussion about .73i87a Ransomware.
Data Recovery ToolWindows 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.

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How Did I Get .73i87a Ransomware

This ransomware is primarily distributed via infected setup.exe files uploaded online. Such files may usually be found on suspicious third-party websites being shared over forums, Referral Spam, like Traffic2Cash or be advertised via an ad-supported program, such as DNS Unlocker.

Another method of distribution this ransomware may use are spam emails that may either contain infected links or malicious .ZIP, .RAR attachments. There were even cases reported where malicious Word Macros have been used.

.73i87a Ransomware – What Does It Do

Once activated on your computer, the cyber threat may deploy its payload files in the following most commonly used by ransomware folders:

%temp%
%AppData%
%User%
%System%

The files may be of the following file formats:

.tmp, .dll, .exe, .bat, .sys, .cpl

Examples of the file names used by the ransomware may be random names such as “81g28d12d12d1.dll” or names that resemble official Windows processes such as “explorer.exe”. They may also resemble a program, such as “iGO.tmp” for instance.

After delivering its payload, the ransomware may create registry entries that schedule its payload programs to run on system startup, for example:

In the key “HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run” or ”HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run” the value:
(Default)
With data to run “81g28d12d12d1.dll” on system startup.

Once this has been setup, the ransomware may scan for files to encrypt and perform the encryption setting the .73i87a browser extension after the files, for example:

  • YourFamilyPhoto.jpg.73i87a
  • The cyber threat then may leave a ransom note with instructions for the user about paying the ransom money to decrypt the files. Ransomware “businessmen” may even negotiate about the ransom money. Users are strongly advised NOT to pay them and look for other alternatives on restoring their files, methods for which we have suggested below. By paying the ransom, you fund the cyber-crime organization to spread the ransomware to more computers and develop it even further, adding more features and strengthening weaknesses. This also helps them to make the encryption algorithm stronger, increasing the decryption difficulty.

    The good news is that the ransomware has not been reported to delete system restore points or shadow volume copies, so you may still have a chance to restore your data.

    Remove .73i87a Ransomware

    To cleanly and fully remove the .73i87a extension Ransomware, you should make sure to isolate any third-party applications and processes that may conceal the payload by booting into Safe Mode. You may also require the assistance of a specific anti-malware program that will look for the concealed payload and its registries, since the ransomware may generate random names and different files for the specific infection.

    1. Boot Your PC In Safe Mode to isolate and remove .73i87a Ransomware

    1. Boot Your PC Into Safe Mode

    1. For Windows 7,XP and Vista. 2. For Windows 8, 8.1 and 10.

    For Windows XP, Vista, 7 systems:

    1. Remove all CDs and DVDs, and then Restart your PC from the “Start” menu.
    2. Select one of the two options provided below:

    For PCs with a single operating system: Press “F8” repeatedly after the first boot screen shows up during the restart of your computer. In case the Windows logo appears on the screen, you have to repeat the same task again.

    donload_now_140

    For PCs with multiple operating systems: Тhe arrow keys will help you select the operating system you prefer to start in Safe Mode. Press “F8” just as described for a single operating system.

    donload_now_140

    3. As the “Advanced Boot Options” screen appears, select the Safe Mode option you want using the arrow keys. As you make your selection, press “Enter“.

    4. Log on to your computer using your administrator account

    donload_now_140

    While your computer is in Safe Mode, the words “Safe Mode” will appear in all four corners of your screen.

    Step 1: Open the Start Menu

    donload_now_140

    Step 2: Whilst holding down Shift button, click on Power and then click on Restart.
    Step 3: After reboot, the aftermentioned menu will appear. From there you should choose Troubleshoot.

    donload_now_140

    Step 4: You will see the Troubleshoot menu. From this menu you can choose Advanced Options.

    donload_now_140

    Step 5: After the Advanced Options menu appears, click on Startup Settings.

    donload_now_140

    Step 6: Click on Restart.
    donload_now_140

    Step 7: A menu will appear upon reboot. You should choose Safe Mode by pressing its corresponding number and the machine will restart.

    2. Remove .73i87a Ransomware with SpyHunter Anti-Malware Tool

    2. Remove .73i87a Ransomware with SpyHunter Anti-Malware Tool

    1. Install SpyHunter to scan for and remove .73i87a Ransomware.2. Scan with SpyHunter to Detect and Remove .73i87a Ransomware.
    Step 1:Click on the “Download” button to proceed to SpyHunter’s download page.

    donload_now_140
    It is highly 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.

    Step 2: Guide yourself by the download instructions provided for each browser.
    Step 3: After you have installed SpyHunter, wait for it to automatically update.

    pets-by-myway-ads-virus

    Step1: After the update process has finished, click on the ‘Scan Computer Now’ button.
    pets-by-myway-ads-virus
    Step2: After SpyHunter has finished scanning your PC for any .73i87a Ransomware files, click on the ‘Fix Threats’ button to remove them automatically and permanently.
    pets-by-myway-ads-virus
    Step3: Once the intrusions on your PC have been removed, it is highly recommended to restart it.

    3. Remove .73i87a Ransomware with Malwarebytes Anti-Malware.

    3. Remove .73i87a Ransomware with Malwarebytes Anti-Malware

    1. Install Malwarebytes Anti-Malware to scan for and remove .73i87a Ransomware. 2. Scan your PC with MalwareBytes to remove all .73i87a Ransomware associated files automatically.
    Step 1: Download Malwarebytes by clicking here.
    Step 2: A pop-up window will appear. Click on the ‘Save File’ button. If it does not, click on the Download button and save it afterwards.
    pets-by-myway-ads-virus
    pets-by-myway-ads-virus
    Step 3: After you have downloaded the setup, simply open it.
    Step 4: The installer should appear. Click on the ‘Next’ button.
    pets-by-myway-ads-virus
    Step 5: Check the ‘I accept the agreement’ check circle if not checked if you accept it and click the ‘Next’ button once again.
    pets-by-myway-ads-virus
    Step 6: Review and click on ‘Next’ on the following 4 steps that will appear afterwards and after that click on the ‘Install’ button.
    pets-by-myway-ads-virus
    Step 7: After the installation process has completed click on the ‘Finish’ button and check the ‘Launch MalwareBytes AntiMalware’ check box.
    Step 1: Launch MalwareBytes if you havent launched it after install.
    Step 2: Wait for the software to update and then click on the blue ‘Scan Now’ button. If it doesnt start updating automatically, click on the blue ‘Update Now’ highlighted text.
    pets-by-myway-ads-virus

    Step 3: At this point, after clicking the ‘Scan Now’ button, the system should start scanning your PC. It may take a while but be patient – it is worth it.
    pets-by-myway-ads-virus
    Step 4: After the scan has been complete and all of the threats have been identified, click on the ‘Remove Selected’ button to detelete them permanently.
    pets-by-myway-ads-virus
    Step 5: Once the scan has completed, MalwareBytes will prompt you to restart your computer. It is recommended to save all your data you are working on before restarting.

    4. Remove .73i87a Ransomware with STOPZilla AntiMalware

    4. Remove .73i87a Ransomware with STOPZilla AntiMalware

    1. Install STOPZilla Anti Malware to scan for and remove .73i87a Ransomware. 2. Scan your PC with STOPZilla Anti Malware to remove all .73i87a Ransomware associated files completely.
    Step 1: Download STOPZilla by clicking here.
    Step 2: A pop-up window will appear. Click on the ‘Save File’ button. If it does not, click on the Download button and save it afterwards.
    pets-by-myway-ads-virus
    Step 3: After you have downloaded the setup, simply open it.
    Step 4: The installer should appear. Click on the ‘Next’ button.
    pets-by-myway-ads-virus
    Step 5: Check the ‘I accept the agreement’ check circle if not checked if you accept it and click the ‘Next’ button once again.
    pets-by-myway-ads-virus
    Step 6: Review and click on the ‘Install’ button.
    pets-by-myway-ads-virus
    Step 7: After the installation process has completed click on the ‘Finish’ button.
    Step 1: Launch STOPZilla if you havent launched it after install.
    Step 2: Wait for the software to automatically scan and then click on the ‘Repair Now’ button. If it does not scan automatically, click on the ‘Scan Now’ button.
    pets-by-myway-ads-virus
    Step 3: After the removal of all threats and associated objects, you should Restart your PC.

    5. Back up your data to secure it against infections and file encryptions by .73i87a Ransomware in the future

    5. Back up your data to secure it against attacks in the future

    Security engineers recommend that you back up your files immediately, preferably on an external memory carrier in order to be able to restore them. In order to protect yourself from .73i87a Ransomware (For Windows Users) please follow these simple steps:

    1. For Windows 7 and earlier 1. For Windows 8, 8.1 and 10 1. Enabling the Windows Defense Feature (Previous Versions)

    1-Click on Windows Start Menu
    backup-1
    2-Type Backup And Restore
    3-Open it and click on Set Up Backup
    w7-backup3
    4-A window will appear asking you where to set up backup. You should have a flash drive or an external hard drive. Mark it by clicking on it with your mouse then click on Next.
    backup-3
    5-On the next window, the system will ask you what do you want to backup. Choose the ‘Let Me Choose’ option and then click on Next.
    backup-4
    6-Click on ‘Save settings and run backup’ on the next window in order to protect your files from possible attacks by .73i87a Ransomware.
    backup-5

    1-Press Windows button + R
    filehistory-1
    2-In the window type ‘filehistory’ and press Enter
    filehistory-2
    3-A File History window will appear. Click on ‘Configure file history settings’
    filehistory-3
    4-The configuration menu for File History will appear. Click on ‘Turn On’. After its on, click on Select Drive in order to select the backup drive. It is recommended to choose an external HDD, SSD or a USB stick whose memory capacity is corresponding to the size of the files you want to backup.
    filehistory-4
    5-Select the drive then click on ‘Ok’ in order to set up file backup and protect yourself from .73i87a Ransomware.

    1- Press Windows button + R keys.
    sysdm
    2- A run windows should appear. In it type ‘sysdm.cpl’ and then click on Run.
    windows-defense2
    3- A System Properties windows should appear. In it choose System Protection.
    windows-defense3
    5- Click on Turn on system protection and select the size on the hard disk you want to utilize for system protection.
    6- Click on Ok and you should see an indication in Protection settings that the protection from .73i87a Ransomware is on.
    windows-defense1
    Restoring a file via Windows Defense feature:
    1-Right-click on the encrypted file, then choose Properties.
    file-restore1
    2-Click on the Previous Versions tab and then mark the last version of the file.
    file-restore2
    3-Click on Apply and Ok and the file encrypted by .73i87a Ransomware should be restored.

    Restore Your Files

    To attempt getting back your files it is recommended to attempt recovering them with the following methods:

    To restore your data, your best bet is to check again for shadow volume copies using this software:

    Shadow Explorer

    The other method of restoring your files is by trying to bring back your files via data recovery software. Here are some examples of data recovery programs:

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    Ventsislav Krastev

    Ventsislav has been covering the latest malware, software and newest tech developments at SensorsTechForum for 3 years now. He started out as a network administrator. Having graduated Marketing as well, Ventsislav also has passion for discovery of new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management and then Network Administration, he found his passion within cybersecrurity and is a strong believer in basic education of every user towards online safety.

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