THREAT REMOVAL

.encryptedRSA Files Virus (SamSam) – How to Remove + Restore Data

This article has been created in order to explain what is SamSam ransomware’s latest variant, how does it work and how to remove it plus restore files with the .encryptedRSA file suffix added to them.

SamSam ransomware has been updated once again, this time with a new feature that allows it to be triggered manually after infecting a computer. The SamSam ransomware infection is also the type of malware that aims to encrypt the files on servers and computers and then extort the victims of the virus to pay ransom to get teir backups, databases and documents to work again. If your organization or computer have been infected by the .encryptedRSA string of SamSam ransomware virus, we recommend that you read this article to learn more about this iteration of SamSam and what options do you have to restore your files after removing the malware.

Threat Summary

Name.encryptedRSA Ransomware
TypeRansomware, Cryptovirus
Short DescriptionNew variant of SamSam ransomware. Encrypts files on the victim’s computer after infecting it and holds them hostage until victims pay ransom.
SymptomsFiles are encrypted with RSA encryption mode and the extension .encryptedRSA is added to them.
Distribution MethodSpam Emails, Email Attachments, Executable files
Detection Tool See If Your System Has Been Affected by malware

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Malware Removal Tool

User ExperienceJoin Our Forum to Discuss .encryptedRSA 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.

SamSam Ransomware – Propagation

Typical for SamSam ransomware is to spread on both private computers as well as businesses. This means that the ransomware virus may infect targeted servers and computers of organizations networks and also private systems via a wide variety of infections methods. If the .encryptedRSA variant of SamSam has infected an organization, it is very likely that the crooks may have sent e-mails to the organization which contain the infection file, masked as an e-mail attachment. This takes some reconnaissance to do, since the crooks may send the e-mails from a fake address which may imitate an actual employee of the organization, increasing the credibility of the message and attachment. The attachments may be all sorts of documents, like:

  • Reports.
  • Statements.
  • Invoices.
  • Security activity.
  • Letter of resignation.
  • Other made up documents.

But in reality, the malicious files of this infection slither unnoticed as a result of various different types of obfuscation software, aimed at concealing them from any protection software and exploit kits which take advantage of unpatched bugs in the networks.

In addition to this, this iteration of SamSam ransomware may also hide behind a seemingly legitimate programs, uploaded on shady website, that may pretend to be setups, portable software, or license activators of some sort (cracks, patches, etc.).

But the biggest attacks of SamSam generated a lot of media fuzz as well. The malware itself reportedly made about $850,000 only for one week and after the virus infected and crippled Atlanta City, the ammount of the ransom itself was $51,000 – pretty serious malware.

So far, the attacks on government facilities in the US to which SamSam ransomware propagated and held hostage were reoported to be:

  • Department of Transportation (Colorado)
  • The Kentucky Hospital.
  • Valley State University of Mississipi.
  • Adams Memorial Hospital in Indiana.
  • Farmington Municipality, New Mexico.
  • Allscrips E.H.R. provider.
  • Unknown Indistrial company in the United States.

And the ransomware may hit anywhere, anytime.

SamSam .encryptedRSA Variant – Analysis of Activity

According to technical analysis performed by Ravikant Tiwari, the .encryptedRSA SamSam ransomware variant performs series of known, but also new activities in comparison to it’s older variants and features a stronger file encryption.

The two main infection files of the malware are reported by Tiwari to be:

  • Loader of the malware.
  • The actual ransomware file of .encryptedRSA SamSam.

The primary ransomware file of SamSam has been reported to carry the .stubbin file extension. The file extension is not a recognized file and it’s main purpose is to be dropped undetected as malware. So we have a new and unique method of infection and obfuscation in the same time, because the unfamiliar file suffix also means that it will likely avoid most real-time protection shields of traditional Antivirus protection.

But the most interesting part of this is that the ransomware may infect a computer, but when this happens, SamSam is not activated and waits patiently for the hackers behind the malware to activate it. This is because the .stubbin file is the actual ransomware in an encrypted forma, more specifically encrypted via the AES encryption algorithm, making it somewhat a “beast in a cage”. Once the threat actor decrypts the AES encrypted .stubbin file, the ransomware calls a Load function which loads a .NET file with a received parameter. This basically is the hacker, decrypting the .stubbin file and then executing it on the infected computer via a BATCH type of file (the password). And what is worse is that according to researchers, this password is manually typed by the hackers to trigger the ransomware. Once there, it starts to perform it’s malicious activity among which is to display the ransom note file, which looks like the following:

In the ransom note, the virus wants victims to visit their TOR-based web page, where the victims can contact the cyber-criminals and negotiate their payment.

.encryptedRSA SamSam Virus – Encryption Analysis

Before starting the encryption process, the SamSam .encryptedRSA variant carefully checks the available disk space on the machine it will encrypt. Then, it begins the file encryption process by scanning from the following pre-set list of file extensions to encrypt:

→ “.jin”, “.xls”, “.xlsx”, “.pdf”, “.doc”, “.docx”, “.ppt”, “.pptx”, “.log”, “.txt”, “.gif”, “.png”, “.conf”, “.data”, “.dat”, “.dwg”, “.asp”, “.aspx”, “.html”, “.htm”, “.php”, “.jpg”, “.jsp”, “.js”, “.cnf”, “.cs”, “.vb”, “.vbs”, “.mdb”, “.mdf”, “.bak”, “.bkf”, “.java”, “.jar”, “.war”, “.pem”, “.pfx”, “.rtf”, “.pst”, “.dbx”, “.mp3”, “.mp4”, “.mpg”, “.bin”, “.nvram”, “.vmdk”, “.vmsd”, “.vmx”, “.vmxf”, “.vmsn”, “.vmem”, “.gz”, “.3dm”, “.3ds”, “.zip”, “.rar”, “.3fr”, “.3g2”, “.3gp”, “.3pr”, “.7z”, “.ab4”, “.accdb”, “.accde”, “.accdr”, “.accdt”, “.ach”, “.acr”, “.act”, “.adb”, “.ads”, “.agdl”, “.ai”, “.ait”, “.al”, “.apj”, “.arw”, “.asf”, “.asm”, “.asx”, “.avi”, “.awg”, “.back”, “.backup”, “.backupdb”, “.pbl”, “.bank”, “.bay”, “.bdb”, “.bgt”, “.bik”, “.bkp”, “.blend”, “.bpw”, “.c”, “.cdf”, “.cab”, “.chm”, “.cdr”, “.cdr3”, “.cdr4”, “.cdr5”, “.cdr6”, “.cdrw”, “.cdx”, “.ce1”, “.ce2”, “.cer”, “.cfp”, “.cgm”, “.cib”, “.class”, “.cls”, “.cmt”, “.cpi”, “.cpp”, “.cr2”, “.craw”, “.crt”, “.crw”, “.csh”, “.csl”, “.csv”, “.dac”, “.db”, “.db3”, “.dbf”, “.db-journal”, “.dc2”, “.dcr”, “.dcs”, “.ddd”, “.ddoc”, “.ddrw”, “.dds”, “.der”, “.des”, “.design”, “.dgc”, “.djvu”, “.dng”, “.dot”, “.docm”, “.dotm”, “.dotx”, “.drf”, “.drw”, “.dtd”, “.dxb”, “.dxf”, “.jse”, “.dxg”, “.eml”, “.eps”, “.erbsql”, “.erf”, “.exf”, “.fdb”, “.ffd”, “.fff”, “.fh”, “.fmb”, “.fhd”, “.fla”, “.flac”, “.flv”, “.fpx”, “.fxg”, “.gray”, “.grey”, “.gry”, “.h”, “.hbk”, “.hpp”, “.ibank”, “.ibd”, “.ibz”, “.idx”, “.iif”, “.iiq”, “.tib”, “.incpas”, “.indd”, “.jpe”, “.jpeg”, “.kc2”, “.kdbx”, “.kdc”, “.key”, “.kpdx”, “.lua”, “.m”, “.m4v”, “.max”, “.mdc”, “.mef”, “.mfw”, “.mmw”, “.moneywell”, “.mos”, “.mov”, “.mrw”, “.msg”, “.myd”, “.nd”, “.ndd”, “.nef”, “.nk2”, “.nop”, “.nrw”, “.ns2”, “.ns3”, “.ns4”, “.nsd”, “.nsf”, “.nsg”, “.nsh”, “.nwb”, “.nx2”, “.nxl”, “.nyf”, “.oab”, “.obj”, “.odb”, “.odc”, “.odf”, “.odg”, “.odm”, “.odp”, “.ods”, “.odt”, “.oil”, “.orf”, “.ost”, “.otg”, “.oth”, “.otp”, “.ots”, “.ott”, “.p12”, “.p7b”, “.p7c”, “.pab”, “.pages”, “.pas”, “.pat”, “.pcd”, “.pct”, “.pdb”, “.pdd”, “.pef”, “.pl”, “.plc”, “.pot”, “.potm”, “.potx”, “.ppam”, “.pps”, “.ppsm”, “.ppsx”, “.pptm”, “.prf”, “.ps”, “.psafe3”, “.psd”, “.pspimage”, “.ptx”, “.py”, “.qba”, “.qbb”, “.qbm”, “.qbr”, “.qbw”, “.qbx”, “.qby”, “.r3d”, “.raf”, “.rat”, “.raw”, “.rdb”, “.rm”, “.rw2”, “.rwl”, “.rwz”, “.s3db”, “.sas7bdat”, “.say”, “.sd0”, “.sda”, “.sdf”, “.sldm”, “.sldx”, “.sql”, “.sqlite”, “.sqlite3”, “.sqlitedb”, “.sr2”, “.srf”, “.srt”, “.srw”, “.st4”, “.st5”, “.st6”, “.st7”, “.st8”, “.std”, “.sti”, “.stw”, “.stx”, “.svg”, “.swf”, “.sxc”, “.sxd”, “.sxg”, “.sxi”, “.sxi”, “.sxm”, “.sxw”, “.tex”, “.tga”, “.thm”, “.tlg”, “.vob”, “.wallet”, “.wav”, “.wb2”, “.wmv”, “.wpd”, “.wps”, “.x11”, “.x3f”, “.xis”, “.xla”, “.xlam”, “.xlk”, “.xlm”, “.xlr”, “.xlsb”, “.xlsm”, “.xlt”, “.xltm”, “.xltx”, “.xlw”, “.ycbcra”, “.yuv”

The encryption process consists of reading the file in segments of 10240 bytes and encrypting the content of the file, after which copying the encrypted version of the file to a new and renamed file, containing the .encryptedRSA file extension. The original files are then deleted and the copied encrypted files appear like the following:

What is interesting here is that the newer version of SamSam does not forget to encrypt any Backup files as well.

Remove SamSam Ransomware and Restore .encryptedRSA Files

In order to to remove this ransomware infection fully from your computer system, we recommend that you follow the removal instructions underneath this article. They have been created in order to help you to remove this threat either manually or automatically from your computer. If manual removal does not seem to work, it is reccomended to remvoe this infection automatically by using an advanced anti-malware software. Such tool will fully erase any traces of SamSam from your computer and will protect it against any infections that might occur in the future as well.

In addition to this, if you want to restore files that have been encrypted with the .encryptedRSA file extension by SamSam, you can try using the alternative methods for file recovery underneath in step “2. Restore files, encrypted by .encryptedRSA Ransomware” underneath. They aim to help you recover as many encrypted files as possible even though they are not 100% guarantee to be able to recover all the data.

Avatar

Ventsislav Krastev

Ventsislav is a cybersecurity expert at SensorsTechForum since 2015. He has been researching, covering, helping victims with the latest malware infections plus testing and reviewing software and the newest tech developments. Having graduated Marketing as well, Ventsislav also has passion for learning new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management, Network Administration and Computer Administration of System Applications, he found his true calling within the cybersecrurity industry and is a strong believer in the education of every user towards online safety and security.

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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 .encryptedRSA Ransomware from Windows.


Step 1: Boot Your PC In Safe Mode to isolate and remove .encryptedRSA Ransomware

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 .encryptedRSA Ransomware 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 .encryptedRSA Ransomware 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 .encryptedRSA Ransomware 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 .encryptedRSA Ransomware 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 .encryptedRSA Ransomware.

Ransomware infections and .encryptedRSA Ransomware 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 .encryptedRSA Ransomware from Mac OS X.


Step 1: Uninstall .encryptedRSA Ransomware 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 .encryptedRSA Ransomware:

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 .encryptedRSA Ransomware. 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 .encryptedRSA Ransomware. 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 .encryptedRSA Ransomware 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 .encryptedRSA Ransomware. 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 .encryptedRSA Ransomware:


Download

SpyHunter for Mac



Step 3 (Optional): Try to Restore Files Encrypted by .encryptedRSA Ransomware.

Ransomware infections and .encryptedRSA Ransomware 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.


.encryptedRSA Ransomware FAQ

What is .encryptedRSA Ransomware ransomware and how does it work?

.encryptedRSA Ransomware 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 .encryptedRSA Ransomware ransomware infect my computer?

Via several ways..encryptedRSA Ransomware 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 .encryptedRSA Ransomware 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 ..encryptedRSA Ransomware files?

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

One way to restore files, encrypted by .encryptedRSA Ransomware 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 "..encryptedRSA Ransomware" files (Other Methods)?

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

Also, keep in mind that viruses like .encryptedRSA Ransomware 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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