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Remove RSA4096 Ransomware and Restore .Crypt Encrypted Files

password-brute-force-stforumA new ransomware variant has been detected out into the open. It is very cleverly designed because it uses CryptoWall ransomware’s ransom note and it does not use any name to evade identification. Furthermore, the ransomware may use a strong RSA encryption cipher to encode the files of the affected user adding a .crypt extension to them. All users who have been affected by this crypto-malware are strongly advised to use the manual illustrated after the article to remove this malware from their computer effectively and then try to use the alternatives suggested below to restore their data.

NameRSA4096
TypeRansomware
Short DescriptionThe malware encrypts the user’s files appending the .crypt file extension.
SymptomsThe user may witness his files to become corrupted and a ransom message as a html file, txt document as well as a picture file..
Distribution MethodVia malicious URLs, Malicious e-mail attachments.
Detection ToolDownload Malware Removal Tool, to See If Your System Has Been Affected by RSA4096
User Experience Join our forum to discuss RSA4096.
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.

.Crypt Ransomware – How Does It Infect

This particular crypto-malware uses several means to drop its malicious executable on the targeted computer. The two types of infection methods may be classified as follows:

  • Malicious URLs.
  • Malicious files.

The malware may be redistributed in various websites via a different type of spam. The spam may be via spam-bots that target websites, such as ghost referrals or web crawlers or spiders. However, you may also encounter malicious Microsoft Word, Excel, PDF files or URLs sent out as attachments in fake spam e-mails, such as the one in the picture below:

malicious-email-spam-links-sensorstechforum

.Crypt Ransomware In Detail

Once its malicious payload carrying file is activated on the user PC, the ransomware may situate malicious files in the following Windows folders:

commonly used file names and folders

Some of the malicious files that are reported by security researchers are the ones containing the ransom message, dropped in various locations:

  • de_crypt_readme.bmp
  • de_crypt_readme.html
  • de_crypt_readme.txt

The Trojan is also reported to tamper with the registry key which allows it to change your wallpaper to its ransom message. Symantec researchers have reported it to use the following data and values to modify the wallpaper:

  • HKEY_CURRENT_USER\Control Panel\Desktop\”TileWallpaper” = “0”
  • HKEY_CURRENT_USER\Control Panel\Desktop\”Wallpaper” = “[PATH TO ENCRYPTED FILES]\de_crypt_readme.bmp”

The encryption process of the ransomware involves the .crypt file extension which is put after the files have been encrypted and is the same as Chimera Ransomware. An encrypted file may look like the following example:

  • New Text Document.txt.crypt

The .crypt ransomware is believed to be a variant of the Cryptolocker family. Also, according to Symantec researchers, it encrypts files that have the following file extensions:

→ .aes .ARC .asc .asf .asm .asp .avi .bak .bat .bmp .brd .cgm .class .cmd .cpp .crt .csr .CSV .dbf .dch .dcu .dif .dip .djv .djvu .doc .DOC .docb .docm .docx .DOT .dotm .dotx .eml .fla .flv .frm .gif .gpg .hwp .ibd .jar .java .jpeg .jpg .key .lay .lay6 .ldf .max .mdb .mdf .mid .mkv .mml .mov .mp3 .mp4 .mpeg .mpg .ms11 .MYD .MYI .NEF .obj .odb .odg .odp .ods .odt .otg .otp .ots .ott .PAQ .pas .pdf .pem .php .png .pot0 .potm .potx .ppam .pps .ppsm .ppsx .PPT .pptm .pptx .psd .qcow2 .rar .raw .RTF .sch .sldx .slk .sql .SQLITE3 .SQLITEDB .stc .std .sti .stw .svg .swf .sxc .sxd .sxi .sxm .sxw .tar .tar.bz2 .tbk .tgz .tif .tiff .txt .uop .uot .vbs .vdi .vmdk .vmx .vob .wav .wks .wma .wmv .xlc .xlm .xls .XLS .xlsb .xlsm .xlsx .xlt .xltm .xltx .xlw .xml .zip

The ransom note displays the following demands by the cyber crooks which are almost identical to CryptoWall 3.0:

→ NOT YOUR LANGUAGE? USE https://translate.google.com
What happened to your files?
All of your files were protected by a strong encryption with RSA4096
More information about the encryption keys using RSA4096 can be found here: http://en.wikipedia.org/wiki/RSA_(cryptosystem)
How did this happen?
!!! Specially for your PC was generated personal RSA4096 Key, both public and private.
!!! ALL YOUR FILES were encrypted with the public key, which has been transferred to your computer via the Internet.
!!! Decrypting of your files is only possible with the help of the private key and decrypt program, which is In our Secret Server
What do I do?
So, there are two ways you can choose: wait for a miracle and get your price doubled, or start obtaining BITCOIN NOW! , and restore your data easy way If You have really valuable data, you better not waste your time, because there is not another way to get your files except make a payment
Your personal ID:{alpha-numerical identification number}
For more specific instructions, please visit your personal home page, there are a few different addresses pointing to your page below:
{personal-id-links}
If for some reasons the addresses are not available, follow these steps
1-Download and install tor-browser: http://www.torproject.org/projects/torbrowser.html.en
2-Video Instruction: https://www.youtube.com/watch?vNQrUZdsw2hA
3-After a successful installation, run the browser.
4-Type in the address bar: {link to personal identification}

Remove RSA4096 Ransomware and Try To Revert Your Files

The removal process of this ransomware should be performed relatively the same way as if you are dealing with a Trojan. For maximum effectiveness, we recommend following the removal instructions below.

Regarding file decryption, you must be advised that for the moment, no direct decryption method is available, since the variant for this ransomware is relatively new. However, the good news is that in step “4. Restore files encrypted by RSA4096” we have suggested general methods for file decryption and restoration which you are open to trying out.

1. Boot Your PC In Safe Mode to isolate and remove RSA4096

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 RSA4096 with SpyHunter Anti-Malware Tool

Remove RSA4096 with SpyHunter Anti-Malware Tool

1. Install SpyHunter to scan for and remove RSA4096.2. Scan with SpyHunter to Detect and Remove RSA4096.
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 RSA4096 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. Back up your data to secure it against infections and file encryption by RSA4096 in the future

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

IMPORTANT! Before reading the Windows backup instructions, we highly recommend to back up your data automatically with cloud backup and insure it against any type of data loss on your device, even the most severe. We recommend reading more about and downloading SOS Online Backup .

To back up your files via Windows and prevent any future intrusions, follow these instructions:

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 RSA4096.
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 RSA4096.

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 RSA4096 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 RSA4096 should be restored.

4. Restore files encrypted by RSA4096

Restore Files Encrypted by RSA4096

Security engineers strongly advise users NOT to pay the ransom money and attempt restoring the files using other methods. Here are several suggestions:

To restore your data, your first bet is to check again for shadow copies in Windows using this software:

Shadow Explorer

If this method does not work, Kaspersky have provided a decryptors for files encrypted with the this and other encryption algorithms:

Kaspersky Decryptors

Another 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:

Video tutorial on how to recover your data using data recovery software and find hidden files on your computer:

Recover Your Data and Find Hidden Files

There is also the technical option to use a network sniffer:

Another way to decrypt the files is by using a Network Sniffer to get the encryption key, while files are encrypted on your system. A Network Sniffer is a program and/or device monitoring data traveling over a network, such as its internet traffic and internet packets. If you have a sniffer set before the attack happened you might get information about the decryption key.

Optional: Using Alternative Anti-Malware Tools

Remove RSA4096 Using Other Alternative Tools

STOPZilla Anti Malware
1. Download and Install STOPZilla Anti-malware to Scan for And Remove RSA4096.
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.
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Step 7: After the installation process has completed click on the ‘Finish’ button.

2. Scan your PC with STOPZilla Anti Malware to remove all RSA4096 associated files completely.
Step 1: Launch STOPZilla if you haven’t 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.

NOTE! Substantial notification about the RSA4096 threat: Manual removal of RSA4096 requires interference with system files and registries. Thus, it can cause damage to your PC. Even if your computer skills are not at a professional level, don’t worry. You can do the removal yourself just in 5 minutes, using a malware removal tool.
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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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Windows Mac OS X

How to Remove RSA4096 from Windows.


Step 1: Boot Your PC In Safe Mode to isolate and remove RSA4096

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 RSA4096 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 RSA4096 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 RSA4096 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 RSA4096 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 RSA4096.

Ransomware infections and RSA4096 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:

If the above link does not work for you and your region, try the other two links below, that lead to the same product:

and

2. On the download page, click on the "Download" button:

3. Click on "Save File" button:

4. Accept all agreements and click "Next":

5. After all the "Next" steps, click on "Install" and then wait for the installation to complete:

6. Run the software. Click on the location to scan for missing or deleted files and click on "Scan":

7. Wait for the scan to complete, it may take some time. Be advised that this scan is not 100% guaranteed to recover all files, but it does have some chance to get your data back:


Windows Mac OS X

Get rid of RSA4096 from Mac OS X.


Step 1: Uninstall RSA4096 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 RSA4096:

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 RSA4096. 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 RSA4096. 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 RSA4096 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 RSA4096. 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.


Step 2: Scan for and remove RSA4096 files from your Mac

When you are facing problems on your Mac as a result of unwanted scripts and programs such as RSA4096, the recommended way of eliminating the threat is by using an anti-malware program. Combo Cleaner offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.


Step 3 (Optional): Try to Restore Files Encrypted by RSA4096 on your Mac.

Ransomware for Mac RSA4096 aims to encode all your files using an encryption algorithm which may be very difficult to decode, unless you pay money. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files, but only in some cases. 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 recommended Data Recovery Mac app by clicking on the link underneath:

1 Comment

  1. Avatarsol cutta

    My windows 8.1 laptop was infected today by this rsa4096 .crypt file extension.
    I was downloading a programme for abode video downloading software from google search engine (quite near the top of the search engine result list) when my wallpaper was changed to the ransom demand and also the usual (so I find as I read) other
    !recovery notes under network locations below my drives and devices.
    How mental has the internet become when you cant trust any seemingly reputable urls esp high up the list on google search, maybe im a bit net illiterate only having used the internet in the last 2 months for first time ever.
    The last two months ive been catching up with films from bitlord as my main reason for using the net and downloaded around 800gb of movies.
    Im not sure im going to be able to restore these files and my fiances personal pictures are also in a folder, hopefully she has not deleted her originals.
    I guess others are not so fortunate and have really valuable files to lose and my files may seem flippant being replaceable, redownloadable movies, however the time to redo them all is considerable,id rather hope I can find a way of restoring them.
    What luck that I find myself being fortunate to aquire a new variant (irony there of course!)
    Iam peeved to say the least as I put a lot of time and effort into my files and haven’t even seen most.
    Back in days of hdd recorders I was unfortunate to lose 80gb of tv films and series because of hardware failure and thought losing my files was a thing of the past, until I find myself welcomed to the criminal internet by these morons who exploit the untechnical minded.
    Iam unable to pay the ransom fee even if I wished to take a chance being out of work presently so I now will have to read thru mountains of confusing literature, try and find free software because I cant afford to pay subscriptions etc.
    Or just do a complete system restore?? I take it that would solve the infection issue however losing all my files at same time..
    RIGHT at this moment that feels the only route ill be able to take being limited to internet allocated time being a pay as u go customer and not sure if I can afford next months £25 rental..
    So, someone out there has given my night a good twist in the back just as I was settling down to relax with some old Alfred Hitchcock presents..
    Instead my early morning to mid afternoon,if not mid evening will be instead trying to discover how to sort this all out….and the moron who instigated this into my system wont be getting a penny from me,so my time wasted prob a lot more than his but I hope many people refuse to pay so these threats die a death, although its unlikely they will if the user/criminal doesn’t have to pay much to use them.
    Why aren’t the police actively doing more to safeguard us against these kinds of things? im sure some will comment and say, well you download movies..isn’t that much different but I have many hundreds of paid for dvds in my collection and the things I download are not available to buy in uk on dvd or I would happily own the originals…

    Reply

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