by Ventsislav Krastev | February 15, 2017 | 0 Comments .CRYPTOSHIELD file extension, AES Encryption Algorithm, file-encryption, how-to, Protection, ransomware, virus

Article created to help you remove the 2.0 version of CryptoShield ransomware and restore AES encrypted files with an added .CRYPTOSHIELD file extension.

A ransomware virus, that came out in 2 versions back in January 2017, named CryptoShield, has reappeared. The virus has a ransom note that imitates one of the most notorious viruses out there – CryptoWall. It came out in 1.0 and 1.1 versions and was distributed by a very dangerous exploit kit and distribution malware. The new version does not step away from this tendency. Since this ransomware virus aims only to encrypt the files on the computers it infects to ask for money to get them back, we advise you to read this article carefully. It will help you remove CryptoShield 2.0 ransomware and restore .CRYPTOSHIELD encrypted files.

Threat Summary

Name	CryptoShield 2.0
Type	Ransomware
Short Description	Encrypts the files on the computers it infects and then drops a ransom note, asking to pay a hefty sum to get the files back.
Symptoms	Encrypts files via the AES cipher, leaving the .CRYPTOSHIELD file extension and changing their names to an e-mail and random symbols. Then drops ransom note files, named # RESTORING FILES #.txt and # RESTORING FILES #.html in which, the ransom instructions are written.
Distribution Method	Via an Exploit kit, Dll file attack, malicious JavaScript or a drive-by download of the malware itself in an obfuscated manner.
Detection Tool	See If Your System Has Been Affected by malware Download Malware Removal Tool
User Experience	Join our forum to Discuss CryptoShield 2.0.
Data Recovery Tool	Windows 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.

CryptoShield 2.0 Ransomware – More Information

CryptoShield Is a ransomware virus that encrypts files, rendering them no longer openable until a hefty ransom fee is paid to the cyber-criminals. The virus came out in 1.0 and 1.1 versions earlier this year.

CryptoShield 2.0 Ransomware – How Does It Infect

The infection of CryptoShield 2.0 ransomware is conducted in combination with the 4th version of RIG Exploit Kit. The exploit kit has also been reported to spread other notorious ransomware viruses such as Locky, Cerber, Spora and Sage 2.0 ransomware viruses.

This exploit kit is embedded in a malicious executable, which is sent to unsuspecting users’ e-mails in the form of spam message. Such messages may contain a malicious e-mail attachment, which may be a malicious file type, like one of the following:

→ ‘sys’,’shs’,’wmf’,’chm’,’wmf’,’ozd’,’ocx’,’aru’,’xtbl’,’bin’,’exe1′,’386′,’dev’,’xnxx’,’vexe’,’tps’,’pgm’,’php3′,’hlp’,’vxd’,’buk’,’dxz’,’rsc_tmp’,’sop’,’wlpginstall’,’boo’,’bkd’,’tsa’,’cla’,’cih’,’kcd’,’s7p’,’smm’,’osa’,’exe_renamed’,’smtp’,’dom’,’vbx’,’hlw’,’dyz’,’rhk’,’fag’,’qrn’,’fnr’,’dlb’,’mfu’,’xir’,’lik’,’ctbl’,’dyv’,’bll’,’bxz’,’mjz’,’mjg’,’dli’,’fjl’,’ska’,’dllx’,’tti’,’upa’,’txs’,’wsh’,’uzy’,’cfxxe’,’xdu’,’bup’,’spam’,’nls’,’iws’,’ezt’,’oar’,’.9′,’blf’,’cxq’,’cxq’,’cc’,’dbd’,’xlv’,’rna’,’tko’,’delf’,’ceo’,’bhx’,’atm’,’lkh’,’vzr’,’ce0′,’bps’,’pid’,’hsq’,’zvz’,’bmw’,’fuj’,’ssy’,’hts’,’qit’,’aepl’,’dx’,’lok’,’plc’,’mcq’,’cyw’,’let’,’bqf’,’iva’,’xnt’,’pr’,’lpaq5′,’capxml’

There may also be documents with malicious macros, like Microsoft Office or Adobe files. These may cause an infection when the user opens them and clicks on the “Enable Content” button. Usually, such ransomware infections are caused primarily because of deceitful messages, such as a fake notification, from PayPal claiming the user’s invoice for a purchase is in the attachment.

Once the attachment is opened, the infection process commences. It consists primarily of various different scripts, and connects to a remote distribution website to download the payload of CryptoShield 2.0. The payload of this virus consists of multiple files that it drops on the computer of the victim:

# RESTORING FILES #.txt
# RESTORING FILES #.html
rad93DD5.tmp.exe
CryptoShield.tmp.exe
net1.exe
net.exe
{random}.exe
{random}.tmp.exe
{random}.temp
recovery.js.tmp
recovery.js
%ALLUSERSPROFILE%\MicroSoftTMP\system32\conhost.exe
To download these files, the virus may remotely connect to the following locations:
107.191.62.136:80
107.191.62.1107.191.62.136:8036/js/prettyPhoto/images/prettyPhoto/default/infromation.php

CryptoShield 2.0 Ransomware – Post-Infection Activity

In addition to this CryptoShield 2.0 Ransomware also performs multiple different commands on the computer of the user to disable data recovery procedures and delete shadow backups on the user’s PC.

→ cmd.exe /C bcdedit /set {default} recoveryenabled No
cmd.exe /C bcdedit /set {default} bootstatuspolicy ignoreallfailures
{DRIVE}:\Windows\System32\cmd.exe” /C vssadmin.exe Delete Shadows /All /Quiet
{DRIVE}:\Windows\System32\cmd.exe” /C net stop vss

The virus also adds itself automatically on the startup of the system and after it’s encryption module is started, it begins to encipher the files on the compromised computer. To encrypt files, CryptoShield 2.0 uses the same AES encryption mode and the virus attacks:

Microsoft Office documents.
Pictures.
Audio files.
Videos.
Adobe PDF files.
Virtual Images.
Archive file types.

After the encryption process has completed, the ransomware virus leaves the files modified with a random id plus the file extension .CRYPTOSHIELD. The encoded files look like the following:

After encrypting the files on the compromised computer, CryptoShield 2.0 ransomware makes sure that the user is known of it’s presence on the computer. This is achieved by dropping multiple files on the computer, called # RESTORING FILES #.txt and # RESTORING FILES #.html. They have similar content:

The instructions themselves ask to contact an e-mail with a personal identification and from there the cyber-criminals most likely provide a Tor-based website or a BitCoin address for the ransom payoff.

CryptoShield 2.0 Ransomware – Remove and Restore .CRYPTOSHIELD Files

In order to remove this file encryption virus from your computer, recommendations are to focus on following the instructions for the removal below. They are carefully designed to assist in the removal of CryptoShield 2.0 ransomware by following methodological steps. For maximum effectiveness, or If you do not have experience in manual malware removal, experts often advise using an advanced anti-malware program, which will make sure that the removal of CryptoShield 2.0 ransomware is full.

After having removed this virus, do not try to tamper with the files in any way. The first thing you should do is to back up your encrypted data. This will allow you to try using copies of them in combination with the alternative data recovery tools below in step “2. Restore files encrypted by CryptoShield 2.0”. They are carefully designed to help you recover at least some of the files, but are not entirely effective, so we take no responsibility of the outcome.

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.

How to Remove CryptoShield 2.0 from Windows.

Step 1: Boot Your PC In Safe Mode to isolate and remove CryptoShield 2.0

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 CryptoShield 2.0 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 CryptoShield 2.0 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 CryptoShield 2.0 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 CryptoShield 2.0 with SpyHunter Anti-Malware Tool

1. Click on the "Download" button to proceed to SpyHunter's download page.

Download

Malware Removal Tool

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.

3. After the update process has finished, click on the 'Malware/PC Scan' tab. A new window will appear. Click on 'Start Scan'.

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.

If any threats have been removed, it is highly recommended to restart your PC.

Step 5 (Optional): Try to Restore Files Encrypted by CryptoShield 2.0.

Ransomware infections and CryptoShield 2.0 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:

EaseUS Data Recovery Software

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 CryptoShield 2.0 from Mac OS X.

Step 1: Uninstall CryptoShield 2.0 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 CryptoShield 2.0:

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 CryptoShield 2.0. 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 CryptoShield 2.0. 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 CryptoShield 2.0 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 CryptoShield 2.0. 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 CryptoShield 2.0:

Download

SpyHunter for Mac

Step 3 (Optional): Try to Restore Files Encrypted by CryptoShield 2.0.

1. Download the reccomended Data Recovery software by clicking on the link underneath:

EaseUS Data Recovery Software

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.

CryptoShield 2.0 FAQ

What is CryptoShield 2.0 ransomware and how does it work?

CryptoShield 2.0 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 CryptoShield 2.0 ransomware infect my computer?

Via several ways.CryptoShield 2.0 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 CryptoShield 2.0 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 .CryptoShield 2.0 files?

You can't. At this point the .CryptoShield 2.0 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 .CryptoShield 2.0 files successfully, then do not despair, because this virus is still new.

One way to restore files, encrypted by CryptoShield 2.0 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 ".CryptoShield 2.0" files (Other Methods)?

Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .CryptoShield 2.0 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 CryptoShield 2.0 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 CryptoShield 2.0 ransomware and then remove it without causing any additional harm to your important .CryptoShield 2.0 files.

Also, keep in mind that viruses like CryptoShield 2.0 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.

.CryptoShield 2.0 Virus (Restore Files)