Osiris Ransomware

Osiris is the latest version of Locky Ransomware. It starts spreading in the last months of 2016. This version of ransomware is stronger and the encrypted files cannot be easily decrypted. Osiris malware uses the same strategy to spread that Locky used. It is distributed through spam emails that contain files with macros. The files are encrypted using AES and RSA Ciphers, which cannot be decrypted without paying the ransom.

Osiris Ransomware changed all your file names into some random characters appended with .osiris extension. These files cannot be edited or read. It leaves notes on how to decrypt the files by paying the ransom. They asked to pay 2.5 bitcoins ransom which costs around $2260. This ransom amount is so huge that many people can’t pay. However, people whose most important data is hijacked by this malware they don’t have any option other than paying.

It this article we will know what is Osiris ransomware, how it gets into your computer, how to remove Osiris, and how to get back your files. However, decrypting files once they are encrypted by Osiris is not possible without the actual encryption key. There are some methods that help users to get back their files.

What is Osiris Ransomware?

How Osiris Ransomware gets into your System?

Osiris ransomware uses a tricky method to enter into computers. The developers of Osiris send users spam email with fake name and address. They use name of most popular companies like banks and courier companies. These emails contain zip file attachment. Also, the content of the email is common and make user curious about the attachment. When you download the attachment you see a file named Invoice_Inv[random numbers].xls. Sometimes they also send .doc or .docx files. These excel and word files contain the macro. Excel and word program warns you that macros are disabled. If you click on enable button you make yourself infected with Osiris malware.

The macros are small program code written to achieve big tasks. The macro then downloads the Osiris malware into your computer. It downloads the DLL installer into %temp% folder. The DLL file extension is changed to a .spe extension so that it cannot be traced. The rundll32.exe program which loads program to memory executes it. When its libraries are placed into the memory, it starts scanning for files in each and every directory of your mounted disk. It scans all the drives including removable and network drives that are accessible. All your important files are encrypted and their name is changed with some random characters and .osiris extension. You can even identify your files. Then it leaves notes in every folder and changes your desktop with a warning. It gives you instruction to follow and pay the ransom.

Decrypting the file encrypted using RSA and AES encryption method is not possible without the actual encryption key and decryptor. So if you are looking for an alternate method than paying the ransom then you can try restoring your files with the help of recovery software. We will guide you how to remove Osiris malware infection and tell you about some recovery software that might work.

How to Remove Osiris Ransomware?

Try to Restore your Computer to Remove Osiris Ransomware

Removing a malware like Osiris ransomware isn't easy. It can be removed using antimalware but the files it encrypted will remain same. Sometimes, restoring the windows to previous date undone things which result a clean computer and with all files. This doesn't work all the time but it is worth a try before paying $2260. 

• WINDOWS 10
• wINDOWS 8 / 8.1
• WINDOWS 7 / VISTA

Search for ‘System Restore’ in Windows Search box and choose ‘Create a Restore Point’ from the Results.

Under the System Protection Tab choose ‘System Restore’

Click on Next

You will find the list of restore points. If you can’t find good restore point then check the box of ‘Show more restore points’. Select an appropriate restore point, click next and follow the instruction to restore your windows.

Go on the Desktop and press Windows + C button. It will display the Windows Charm menu.

In this charm menu Click on Settings and then select Control Panel

Search for ‘Recovery’ in the Control Panel Search Box and Choose Recovery from the Search Result

Now Choose ‘Open System Restore’

Click on Next

Now choose the Restore Points and click on Next

Click on Finish

Now Click on Yes button to confirm the restoration process. It warns that once the system restore will start it cannot be stopped.

Click on the Start button and search for System Restore in the search box and select the System Restore from the search result.

Select Choose a different restore point and click Next in the window. In the next window you will see different restore points and select one appropriate and click next.

Now Click on Finish button.

Now Windows will ask for confirmation that the once the Restoration will start it cannot be stopped. Click on Yes to confirm.

Automatically Remove Osiris Ransomware from your Computer? 

If you want to remove the Osiris malware infection automatically then you should download an antimalware. Malware like Osiris cannot be removed by antiviruses. It need strong antimalware like MalwareFox. It scans all the computer for Osiris and other malware and help you to remove them in one click. Download MalwareFox to start this step.  

Step 1- Install MalwareFox on your PC

Open the Installer by Clicking on the Downloaded file.

Now choose your desired language and follow the instructions to install the MalwareFox on your computer.

After completing the installation, the MalwareFox will update the application to its latest version. Let it update.

Now it will sync the Malware database with server. It is important step as it needs to know latest types of malwares.

Step 2 - Scan and Clean your Computer for Malware

When the update process completes it will show Real Time Protection: On. Now you can scan your computer. Press Scan button and leave everything on MalwareFox, it knows how to deal with Osiris Ransomware and other malware.

After the scan complete click on Next button to clean your computer completely.

Recover your Files using Recovery Software

Osiris Ransomware uses RSA-2048 and AES-128 ciphers to encrypt your files. This encryption is so strong that it is unbreakable without the actual encryption key and decryptor. The developers of the ransomware have this. So if you want to get your files you have to pay the ransom which is around $2260. Before doing so, why don't you try to recover your files with the help of recovery software? Yes, sometimes they successfully recover the encrypted files.

There is a shadow copies of all your files on drive. This shadow copy help program to recover the deleted or changed files. Recovery software like Shadow Explorer and Recuva works the same way. They look for shadow copy on your drives and generate the actual file. It is worth a try before paying money to cyber criminals. 

How to Stay Away with Osiris Ransomware?

Ransomware like Osiris tricks you to enter in your system. They send spam email with alarming contents. In curiosity you download and open the attachment files. This makes you infected with Osiris ransomware. To avoid this, do not rely on spam emails. Don't download attachment from unknown or suspicious sender. You should not even open such emails. Also, to avoid such tragedy you need to backup your important files regularly. Keep the backup unattached to main system secure. Also, don't avoid security system updates of your windows. These security updates fills the breach and help you to fight with malware attacks. 

Antivirus programs aren't capable of detecting and removing all types of malware. To protect yourself from critical malware like Osiris you should have a strong antimalware running on your system. I recommend to install MalwareFox and keep its real-time protection on so that it can save you from any malware attack.