What is .osiris?

.osiris is the file extension added to files encrypted by Osiris ransomware. It’s a new version of the notorious Locky ransomware, and that is bad news for victims. Locky remains uncrackable by malware researchers, which means there’s little chance you will get your files back. What ransomware does is, it takes your files hostage and then demands that you pay a certain amount of money to restore them. It’s quite a profitable business because ransomware developers ask for big sums of money.

osiris

It should be noted that it’s incredibly easy to infect computers with ransomware, all users need to do is open an infected email attachment, and the virus downloads onto the computer. In any cases .osiris ransomware will demand that you pay a certain amount of money. Which we don’t suggest you do. Paying does not guarantee file decryption. What you should do is ignore the demands and get your files from backup. Before you do, you must remove .osiris from your computer.

How does .osiris act?

Spam email attachments remain the most popular way of spreading ransomware. Even though it has been done for a while now, users are still not aware of potential dangers lurking behind emails. If you were to open an email attachment and it was infected with .osiris, the virus would download onto your computer. This is why it’s important that you do not rush to open every email you get. Even if it seems like the email came from a legitimate company or the government, double check the contents and the sender. Be on the look out for invoices because that is usually used to pressure users into opening the files. Getting infected by ransomware can have very serious consequences so be cautious.

Once .osiris is on your computer, it will use RSA-2048 and AES-128 encryption algorithms and make your files unreadable. Your files will be renamed into [8 random symbols]–[4 random symbols]–[4 random symbols]–[8 random symbols]–[12 random symbols].osiris. A ransom note, identical to the ones used by all versions of Locky, will inform you that your files have been encrypted. You will be given links to Wikipedia articles about encryption algorithms and be informed that decryption is only possible with their decryption tool. Which is, unfortunately, true. You will be asked to download the Tor browser and access a website where you can buy the decryption tool. We suggest you think carefully about paying. Not only will you be supporting the cyber criminals, but you also risk paying for nothing. Even if you pay, file decryption is not guaranteed. We suggest you delete .osiris.

.osiris removal

We strongly suggest you use anti-malware software to delete .osiris. While manual .osiris removal is possible, it is quite complex and you could end up damaging your computer. Allow a professional removal tool to remove .osiris for you.

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Quick Menu

Step 1. Delete .osiris using Safe Mode with Networking.

Remove .osiris from Windows 7/Windows Vista/Windows XP
  1. Click on Start and select Shutdown.
  2. Choose Restart and click OK. Windows 7 - restart
  3. Start tapping F8 when your PC starts loading.
  4. Under Advanced Boot Options, choose Safe Mode with Networking. Remove .osiris - boot options
  5. Open your browser and download the anti-malware utility.
  6. Use the utility to remove .osiris
Remove .osiris from Windows 8/Windows 10
  1. On the Windows login screen, press the Power button.
  2. Tap and hold Shift and select Restart. Windows 10 - restart
  3. Go to Troubleshoot → Advanced options → Start Settings.
  4. Choose Enable Safe Mode or Safe Mode with Networking under Startup Settings. Win 10 Boot Options
  5. Click Restart.
  6. Open your web browser and download the malware remover.
  7. Use the software to delete .osiris

Step 2. Restore Your Files using System Restore

Delete .osiris from Windows 7/Windows Vista/Windows XP
  1. Click Start and choose Shutdown.
  2. Select Restart and OK Windows 7 - restart
  3. When your PC starts loading, press F8 repeatedly to open Advanced Boot Options
  4. Choose Command Prompt from the list. Windows boot menu - command prompt
  5. Type in cd restore and tap Enter. Uninstall .osiris - command prompt restore
  6. Type in rstrui.exe and press Enter. Delete .osiris - command prompt restore execute
  7. Click Next in the new window and select the restore point prior to the infection. .osiris - restore point
  8. Click Next again and click Yes to begin the system restore. .osiris removal - restore message
Delete .osiris from Windows 8/Windows 10
  1. Click the Power button on the Windows login screen.
  2. Press and hold Shift and click Restart. Windows 10 - restart
  3. Choose Troubleshoot and go to Advanced options.
  4. Select Command Prompt and click Restart. Win 10 command prompt
  5. In Command Prompt, input cd restore and tap Enter. Uninstall .osiris - command prompt restore
  6. Type in rstrui.exe and tap Enter again. Delete .osiris - command prompt restore execute
  7. Click Next in the new System Restore window. Get rid of .osiris - restore init
  8. Choose the restore point prior to the infection. .osiris - restore point
  9. Click Next and then click Yes to restore your system. .osiris removal - restore message

Site Disclaimer

2-remove-virus.com is not sponsored, owned, affiliated, or linked to malware developers or distributors that are referenced in this article. The article does not promote or endorse any type of malware. We aim at providing useful information that will help computer users to detect and eliminate the unwanted malicious programs from their computers. This can be done manually by following the instructions presented in the article or automatically by implementing the suggested anti-malware tools.

The article is only meant to be used for educational purposes. If you follow the instructions given in the article, you agree to be contracted by the disclaimer. We do not guarantee that the artcile will present you with a solution that removes the malign threats completely. Malware changes constantly, which is why, in some cases, it may be difficult to clean the computer fully by using only the manual removal instructions.

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