The newest CryptoNar Virus sample has been uncovered in a new attack campaign encrypting target user data with the .CryptoNar extension. The captured samples appear to be early test versions of it. Our article provides an overview of the virus operations and it also may be helpful in attempting to remove the virus.
|Short Description||The ransomware encrypts sensitive information on your computer system with the .CryptoNar extension and demands a ransom to be paid to allegedly recover them.|
|Symptoms||The ransomware will encrypt your files with a strong encryption algorithm.|
|Distribution Method||Spam Emails, Email Attachments|
|Detection Tool|| See If Your System Has Been Affected by CryptoNar virus |
Malware Removal Tool
|User Experience||Join Our Forum to Discuss CryptoNar virus.|
|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.|
CryptoNar Virus – Distribution Ways
The CryptoNar virus samples are being distributed using an attack campaign that utilizes several different methods. The captured strains are relatively low in number and do not researchers an indication of the main method. We presume that the criminals are going to use the most popular tactics in active campaigns.
A common technique is the coordination of email SPAM campaigns that use various social engineering tricks. The main goal of the hackers is to coerce the targets into interacting with the malicious elements that lead to the virus infections. The messages in most cases appear as legitimate notifications, password reminders and other emails that are commonly sent by Internet services and companies that the users may interact with. The virus files may be directly attached or linked in the body contents.
The criminals can also craft fake download pages which are counterfeit copies of the real vendor pages and Internet portals. To facilitate a higher number of infected computers the malicious users may use various scripts — redirects, pop-ups, ads, banners and in-line links.
These two methods are the main tactics for spreading infected payload carriers. There are two main types that are most commonly used to spread ransomware such as the CryptoNar virus:
- Macro-Infected Documents — The criminals can create numerous documents of different types (text files, presentations, databases and spreadsheets) that contain macros leading to the virus infection. Whenever they are opened by the target users a notification prompt will appear asking them to enable the built-in code.
- Application Installers — Code that can activate a CryptoNar virus infection may be embedded in installers for updates, applications or plug-ins.
These files can also be found on various file sharing networks such as BitTorrent. They are often used to access illegal and pirate content.
Advanced cases can integrate the threat in browser hijackers (redirects) that are made for the most popular web browsers. They represent dangerous extensions that pose as useful additions and are spread on the official repositories and various third-party sites. Their typical behavior is to modify the settings of the affected web browsers and redirect the users to a hacker-specified address. After this is done the virus infection will follow.
CryptoNar Virus – In-Depth Analysis
The security reveals that the CryptoNar virus may contain some code from a previous infection known as CryptoJoker. It is possible that the code is a customized version of the former or that the hackers have used some parts of its code. The fact that a common behavior pattern is used showcases that the threat is probably being ordered and/or used by an inexperienced hacker or criminal collective.
Typical ransomware infections begin with an information harvesting module. It is programmed by the attackers to automatically acquire information that can be further processed by the criminals. It can harvest personal information that can expose the identity of the users. This is done by looking out for strings containing their name, address, phone number, location or any stored account credentials.
In other cases the collected data can be used for attack optimizations. It allows the criminals to generate statistics for the most common type of infected computers. The collection includes a report on the installed hardware components, user-set settings and certain operating system conditions.
The whole database of collected strings can then be further processed by another component to protect the CryptoNar virus from being discovered. A scan of the infected system will be made looking for signs of installed applications and services that can interfere with the proper malware engine execution. The list includes any anti-virus programs, virtual machine hosts and debug environments.
Once the ransomware has taken over the system it can proceed with other operating system modifications as programmed by its operators. A common technique is to program Windows Registry changes — they seek to manipulate both the operating system strings and those belonging to the user-installed software. As a result the victims will face severe performance issues or the inability to access certain features. The creation of strings associated with the threat can be combined with boot menu changes. This will lead to the installation of the CryptoNar virus as a persistent threat. This means that the malicious engine will automatically start every time the computer is powered on. It can also disable access to the recovery menu which can make manual removal instructions useless.
To make recovery more difficult the engine can also delete System Restore Data, including all System Restore Points and any identified Shadow Volume Copies. This means that effective restore of infected files is possible only with a professional-grade solution. Refer to our instructions for more information.
Advanced infections can deliver a Trojan infection which allows the criminal operators to take over control of the infected hosts. This is done by setting up an encrypted connection with a hacker-controlled server. When it is active the operators can take over control of the systems, retrieve any file and also deploy additional threats.
CryptoNar Virus — Encryption
The CryptoNar virus uses the typical ransomware approach of utilizing a built-in list of target file type extensions. A strong cipher is used to process them, the end goals is to coerce the victim users into paying the criminals a “decryption fee”. A typical process list may include the following data types:
As a result all processed data will be renamed with the .CryptoNar extension. Two subtypes have been identified — .partially.CryptoNar and .fully.CryptoNar. The ransomware note is created in a file called CryptoNar RECOVERY INFORMATION.txt. It reads the following message:
Your important files including photos, videos, documents, databases, etc. were encrypted with our CryptoNar ransomware. The only way to get your files back is to pay us. otherwise, your files will be lost forever. Important note: Removing CryptoNar will not restore access to your encrypted files. Encryption was made using a unique RSA-2048 public key generated for this computer. To decrypt files you need to acquire the private key (decryption key). The only copy of the private key, which will allow you to decrypt your files, is located on a secret server in the Internet; the server will eliminate the key after 72 hours since its generation (since the moment your computer was infected). once this has been done, nobody will ever be able to restore your files. In order to receive your decryption key, you will have to pay $200 in bitcoins to this bitcoin address: 1FeutvrveiF8odnnx9Rr3cyBfFiecFeKwRq when time comes to send the bitcoins to us, make sure to include your e-mail and your personal ID (you can see it below) in the extra information box (it may apper also as ‘Extra Note or ‘optional message’) in order to get your personal decryption key. It may take up to 6-8 hours to take your personal decryption key. After the payment was made, and you received your decryption key, just press the decryption button in the decryptor (located on the desktop). Enter your decryption key you received, and wait until the decryption process is done. Your ID: [redacted]
Some versions also employ an application frame with the title Crypto Nar 1.0 which also displays the note.
Remove CryptoNar Virus and Restore Encrypted Files
If your computer system got infected with the CryptoNar Virus, you should have a bit of experience in removing malware. You should get rid of this ransomware as quickly as possible before it can have the chance to spread further and infect other computers. You should remove the ransomware and follow the step-by-step instructions guide provided below.
- Guide 1: How to Remove CryptoNar virus from Windows.
- Guide 2: Get rid of CryptoNar virus from Mac OS X.
How to Remove CryptoNar virus from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove CryptoNar virus
Step 2: Uninstall CryptoNar 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.
Step 3: Clean any registries, created by CryptoNar virus on your computer.
The usually targeted registries of Windows machines are the following:
You can access them by opening the Windows registry editor and deleting any values, created by CryptoNar virus there. This can happen by following the steps underneath:
Step 4: Scan for CryptoNar virus with SpyHunter Anti-Malware Tool
Step 5 (Optional): Try to Restore Files Encrypted by CryptoNar virus.
Ransomware infections and CryptoNar 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.
If the above link does not work for you and your region, try the other two links below, that lead to the same product:
Get rid of CryptoNar virus from Mac OS X.
Step 1: Uninstall CryptoNar virus and remove related files and objects
1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:
- 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 CryptoNar 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:
You can repeat the same procedure with the following other Library directories:
Tip: ~ is there on purpose, because it leads to more LaunchAgents.
Step 2: Scan for and remove CryptoNar virus files from your Mac
When you are facing problems on your Mac as a result of unwanted scripts and programs such as CryptoNar virus, 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 CryptoNar virus on your Mac.
Ransomware for Mac CryptoNar virus 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.
CryptoNar virus FAQ
What is CryptoNar virus ransomware and how does it work?
CryptoNar 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 CryptoNar virus ransomware infect my computer?
CryptoNar 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 CryptoNar 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 .CryptoNar virus files?
You can't. At this point the .CryptoNar virus files are encrypted. You can only open them once they are decrypted.
Decryptor did not decrypt my data. What now?
If a decryptor did not decrypt your .CryptoNar virus files successfully, then do not despair, because this virus is still new.
One way to restore files, encrypted by CryptoNar 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 ".CryptoNar virus" files (Other Methods)?
We have suggested several file recovery methods that could work if you want to restore .CryptoNar 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 CryptoNar 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 CryptoNar virus ransomware and then remove it without causing any additional harm to your important .CryptoNar virus files.
Also, keep in mind that viruses like CryptoNar 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?
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.