THREAT REMOVAL

.osiris Extension Virus – Remove Locky Ransomware

stf-locky-ransomware-virus-osiris-extension-ransom-message-note

Attention! This article will help you remove .osiris file extension virus (Locky ransomware) successfully. Follow the ransomware removal instructions below carefully.

Locky ransomware has hit computers once more. This time, your files will become encrypted with the extension .osiris and the name of the encrypted files will also get changed. The malware creators seem to have changed their Norse mythology theme with the Egyptian one. Furthermore, there are changes to the code of the cryptovirus in attempt to avoid detection. A new spam campaign is distributing the malware with blank emails or such with only one line in them. They have files attached with unusual extensions like .342, .343, .552 or with .xls, .tdb, .zk and some emails have one sentence urging users to open the attachment. To see if you can try to restore some of your files read till the end.

Threat Summary

Name.osiris Virus
TypeRansomware, Cryptovirus
Short DescriptionThe ransomware encrypts your data and then displays a ransom message with instructions for payment.
SymptomsEncrypted files will have the .osiris extension appended to them.
Distribution MethodSpam Emails, Email Attachments (.xls, .tdb, .zk, .342, .343, .552)
Detection Tool See If Your System Has Been Affected by malware

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User ExperienceJoin Our Forum to Discuss .osiris Virus.
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.

.osiris Virus – Infection Spread

.osiris virus – the latest iteration of the Locky ransomware has been spread by a new malware spam campaign and two main types of emails. The malware creators are spreading their virus with a completely blank email or with one, which is urging users to see an attached file. Both types of emails are using an attachment with random numbers as its name with these extensions – .xls, .tdb, .zk, .342, .343, .552.

The body of the second type of email can be seen down here:

From: “Marina” Marina.jeffeaux91@klachurch.org
Subject: Emailing: _0828817_36073220

Your message is ready to be sent with the following file or link
attachments:

_0828817_36073220

Attachment: _0828817_36073220.xls

The attachment in most such electronic letters usually contains a Microsoft Word file containing a macro that will download the malware. Once executed, your computer becomes infected with .osiris virus. You can see two examples of payload downloaders for the newest version of the ransomware on the VirusTotal website:

stf-locky-ransomware-virus-osiris-extension-virustotal-detections
stf-locky-ransomware-virus-osiris-extension-virustotal-detections-2

.osiris virus can also be spread around social media sites such as Facebook. Refrain from interacting with any suspicious and unknown links, attachments and files as a general rule of thumb. Before opening a file, always perform a check with a security tool. You should read the ransomware preventing tips in our forum to learn how you can prevent these types of threats to infect your computer.

.osiris Virus – Technical Analysis

Malware researchers have reported .osiris virus to infect computers with a different version and to encrypt files with a new extension – .osiris. It seems that the Norse mythology theme has been converted to the Egyptian one. Some of the sites that download the payload file can be seen below:

List with some of the payload download sites

http://aetech-solutions.com/87t34f
http://amcc.fr/87t34f
http://andrewsassociates.org/87t34f
http://angiebundy.com/87t34f
http://antelope.co.uk/87t34f
http://bioperson.es/87t34f
http://buhu5.ru/87t34f
http://cafe-bg.com/87t34f
http://communicore.biz/87t34f
http://dachbud.slask.pl/87t34f
http://davetoll.com/87t34f
http://dcareug.com/87t34f
http://djelixir.com/87t34f
http://elevenrooms.se/87t34f
http://fm1111.fr/87t34f
http://griptrix.com/87t34f
http://kamico.net/87t34f
http://kelbud.pl/87t34f
http://kh2.co.uk/87t34f
http://laferwear.com/87t34f
http://masterstudio.org/87t34f
http://milano.koscian.pl/87t34f
http://pablopaz.com/87t34f
http://paradiseinfiji.com/87t34f
http://rongdaistudio.com/87t34f
http://rsaf.cz/87t34f
http://sevenseas.lk/87t34f
http://soulscooter.com/87t34f
http://srivasavi.mksystems.co.in/87t34f
http://ssivendorinformation.com/87t34f
http://stonerinsurance.com/87t34f
http://subys.com/87t34f
http://tppsk.marcinczaja.pl/87t34f
http://tybor.hu/87t34f
http://weegee.fr/87t34f
http://www.riojadental.com/87t34f
http://www.stavros.ca/87t34f
http://zealcon.com/87t34f

Do not open any of these links, as they contain a malware downloader. This is posted for informing about download URLs of the malware.

You can also see some of the C2 (Command and Control) servers right here:

  • POST http://91.142.90.61/checkupdate
  • POST http://185.82.217.28/checkupdate
  • POST http://195.19.192.99/checkupdate

When the payload is executed, your files will become encrypted, and a ransom note will be displayed on your desktop background. The note with the payment instructions will also be saved as a file named OSIRIS-([a-z0-9])\.htm, where the brackets contain symbols with randomized numbers and letters.

The ransom note with instructions is set as your desktop background, and it is almost the same as past iterations. You can see how it looks like if loaded as an .html file.

stf-locky-ransomware-virus-osiris-extension-ransom-message-note

The text reads the following:

!!! IMPORTANT INFORMATION !!!

All of your files are encrypted with RSA-2048 and AES-128 ciphers.
More information about the RSA and AES can be found here:
https://en.wikipedia.org/wiki/RSA_(cryptosystem)
https://en.wikipedia.org/wiki/Advanced_Encryption_Standard
Decrypting of your files is only possible with the private key and decrypt program, All which is on our secret server.
To receive your private key follow one of the links:

If all of this addresses are not available, follow these steps:
1. Download and install Tor Browser: https://www.torproject.org/download/download-easy.html
2. After a successful installation, run the browser and wait for initialization.
3. Type in the address bar: g46mbrrzpfszonuk.onion/[Redacted] 4. Follow the instructions on the site.
!!! Your personal identification ID: [Redacted] !!!

The .osiris virus will provide a link to a network domain hidden within the TOR browser service. The domain looks exactly like the one of its predecessors as you can see right here:

stf-locky-ransomware-virus-osiris-file-extension-locky-decryptor-page-payment-instructions

Some of the previous victims of Locky ransomware have reported that paying the ransom designated by the cybercriminals did not recover their files. Thus, you should not attempt contacting these crooks or paying them any money. Until this moment we only can conclude that the malware creators will continue developing new versions of the ransomware and extort people by encrypting their files.

For the moment, a list with the file types which become encrypted is not available. Files with the following extensions may get encrypted:

→.txt, .pdf, .html, .rtf, .avi, .mov, .mp3, .mp4, .dwg, .psd, .svg, .indd, .cpp, .pas, .php, .java, .jpg, .jpeg, .bmp, .tiff, .png, .doc, .docx, .xls, .xlsx, .ppt, .pptx

Encrypted files will have the .osiris extension appended to them, but also their names will be changed with randomized symbols of letters and numbers, just like the ransom note. The encryption algorithm that is still claimed to be used by Locky is RSA-2048 with AES 128-bit ciphers.

.osiris virus is very likely to delete the Shadow Volume Copies on the Windows operating system with the following command:

→vssadmin.exe delete shadows /all /Quiet

Continue to read and see how to remove this ransomware and and also – what methods you can try to decrypt some of your data.

Remove .osiris Virus and Restore .osiris Files

If your computer got infected with the .osiris virus, you should have some experience in removing malware. You should get rid of this ransomware as fast as possible before it can have the chance to spread further and infect more computers. You should remove the ransomware and follow the step-by-step instructions guide given below. To see ways that you can try to recover your data, see the step titled 2. Restore files encrypted by .osiris virus.

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Berta Bilbao

Berta is a dedicated malware researcher, dreaming for a more secure cyber space. Her fascination with IT security began a few years ago when a malware locked her out of her own computer.

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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 .osiris Virus from Windows.


Step 1: Boot Your PC In Safe Mode to isolate and remove .osiris Virus

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 .osiris Virus 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 .osiris Virus 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 .osiris Virus 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 .osiris Virus 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 .osiris Virus.

Ransomware infections and .osiris Virus 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 .osiris Virus from Mac OS X.


Step 1: Uninstall .osiris Virus 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 .osiris Virus:

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 .osiris Virus. 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 .osiris Virus. 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 .osiris Virus 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 .osiris Virus. 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 .osiris Virus:


Download

SpyHunter for Mac



Step 3 (Optional): Try to Restore Files Encrypted by .osiris Virus.

Ransomware infections and .osiris Virus 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.


.osiris Virus FAQ

What is .osiris Virus ransomware and how does it work?

.osiris Virus 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 .osiris Virus ransomware infect my computer?

Via several ways..osiris Virus 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 .osiris Virus 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 ..osiris Virus files?

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

One way to restore files, encrypted by .osiris Virus 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 "..osiris Virus" files (Other Methods)?

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

Also, keep in mind that viruses like .osiris Virus 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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