THREAT REMOVAL

Remove Casseto Virus – Restore .cassetto Files

Cassetto Virus image ransomware note .cassetto  extension

The Casseto virus is a new ransomware threat that encrypts target user data with a strong cipher called and renames them with the .cassetto extension. At the moment the acquired samples indicate that this may be a test release. Our article provides an overview of the virus operations and it also may be helpful in attempting to remove the virus.

Threat Summary

Name Casseto virus
Type Ransomware, Cryptovirus
Short Description The ransomware encrypts sensitive information on your computer system with the .cassetto 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 malware

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User Experience Join Our Forum to Discuss Casseto 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.

Cassetto Virus – Distribution Ways

The Casseto virus is a ransomware strain that has been spotted in a limited distribution release. The acquired samples do not seem to target specific countries and due to the low number of captured virus code the security analysts were not able to state the which delivery method is the preferred one. We anticipate that in future attacks several methods may be used at once. In the meantime any one of the popular tactics can deliver a Casseto virus infection.

The first and most prominent way is to coordinate the construction of an email SPAM campaign. They use various social engineering tactics to coerce the users into interacting with the malicious content. The virus file itself can be delivered directly as a file attachment or linked in the body contents.

Another mechanism is the creation of numerous fake download sites that use a familiar design layout that imitates popular web portals that users typically use. These two methods are also the main ones responsible for distributing payload carriers. The two most popular forms are the following:

  • Documents — The Casseto virus code can be embedded in scripts that are inserted in documents of various types: rich text documents, spreadsheets, presentations or databases. Once they are opened by the victim users a notification prompt will appear asking them to enable the built-in macros. If this is done the virus infection will follow.
  • Infected Software — The threat can be embedded in software installers, plugins or updates. The most common way this is done is by taking the legitimate files from the vendors sites and modifying them with the relevant code. As a result whenever they install such an app the virus will be delivered automatically.

Other tactics include the upload of the infected files on file sharing networks like BitTorrent where pirate content is usually found. Links can be spread also on community forums and web sites. The criminals can also make use of scripts to subvert the sites and messages to the virus download action.

Advanced infection campaigns can make use of browser hijackers, also called redirects. They represent malicious plugins made for the most popular web browsers. They are spread on the official extension repositories and third-party sites making use of elaborate descriptions, fake user reviews and developer credentials. Once installed they will modify the installed browser settings to redirect the victims to a hacker-controlled page. Following this the dangerous payload will be downloaded from a remote server and executed on the local machine.

Cassetto Virus – In-Depth Analysis

The captured strains associated with the Casseto virus have been acquired during a test release campaign. The initial security analysis shows that the main engine does not contain any code taken from the famous ransomware families. This leads us to believe that it may be possible that the hacker or criminal collective behind it may be the original authors. The other hypothesis is that the controllers have bought the ransomware code from an underground marketplace or have paid other hackers to produce a custom version for a particular goal. Whatever the reason the Casseto virus will follow the prescribed behavior as instructed by the hacker operators.

A typical infection will begin with a data harvesting module. The extracted information is classified into two main categories. The engine can extract information that can expose the victim’s identity. The strings that are extracted can include their name, address, phone number, interests, location and account credentials. Other information that is typically acquired includes campaign optimization metrics. It is used to optimize the attacks by acquiring information such as the installed hardware components, certain user settings and operating system variables.

This information can then be used to bypass any installed security services — anti-virus products, sandbox environments and virtual machine hosts. The associated real-time engines can be bypassed or entirely removed. This will allow the engine of the Casseto virus to continue with various system modifications. They can be different depending upon the integrated instructions.

One of the first actions executed by most viruses is the Windows Registry changes. The engine of the Casseto virus can modify existing strings belonging to the operating system or user-installed applications. The consequences include severe performance issues when using the computer and the inability to access certain functions or services. Strings can be created for the virus itself. When this is combined with modifications of boot settings this can lead to a persistent installation. When this feature is active it will automatically start every time the computer is powered on and will disable access to the recovery boot menu. This will render most manual removal instructions useless. Additional measures that make it more difficult to restore the computer is to delete Restore Data — this includes all identified Restore Points and Shadow Volume Copies information.

In certain cases ransomware threats like the Casseto virus are configured to deploy additional threats such as Trojans. Their route of behavior is to establish a secure connection with a hacker-controlled server. It allows the criminals to spy on the victim machines in real-time, hijack files and install other viruses.

Cassetto Virus — Encryption

Once all components have completed operation the ransomware engine will be called. Like other popular threats it will make use of a built-in list targeting the most popular file types. They will be encrypted with a strong cipher and processed further if instructed. An example list may contain the following data:

  • Archives
  • Documents
  • Backups
  • Images
  • Music
  • Videos

All victim files will be renamed with the .cassetto extension. The associated ransomware note is called “IMPORTANT ABOUT DECRYPT.txt” and reads the following:

L!W2Be%BS4
WARNING!! YOU ARE SO F*UCKED!!!

Your Files Has Encrypted

What happened to your files?
All of your files were protected by a strong encryptation
There is no way to decrypt your files without the key.
If your files not important for you just reinstall your system.
If your files is important just email us to discuss the the price and how to decrypt your files.

You can email us to omg-help-me@openmailbox.org

We accept just BITCOIN if you don´t know what it is just google it.
We will give instructions where and how you buy bitcoin in your country.
Price depends on how important your files and network is.
It could be 0.5 bitcoin to 25 bitcoin.
You can send us a encrypted file for decryption.
Fell free to email us with your country, computer name and username of the infected system.

Remove Casseto Virus and Restore Encrypted Files

If your computer system got infected with the Casseto 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.

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Martin Beltov

Martin graduated with a degree in Publishing from Sofia University. As a cyber security enthusiast he enjoys writing about the latest threats and mechanisms of intrusion.

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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 Casseto virus from Windows.


Step 1: Boot Your PC In Safe Mode to isolate and remove Casseto 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 Casseto 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 Casseto 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 Casseto 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 Casseto 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 Casseto virus.

Ransomware infections and Casseto 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 Casseto virus from Mac OS X.


Step 1: Uninstall Casseto 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 Casseto 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 Casseto 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 Casseto 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 Casseto 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 Casseto 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 Casseto virus:


Download

SpyHunter for Mac



Step 3 (Optional): Try to Restore Files Encrypted by Casseto virus.

Ransomware infections and Casseto 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.


Casseto virus FAQ

What is Casseto virus ransomware and how does it work?

Casseto 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 Casseto virus ransomware infect my computer?

Via several ways.Casseto 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 Casseto 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 .Casseto virus files?

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

One way to restore files, encrypted by Casseto 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 ".Casseto 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 .Casseto 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 Casseto 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 Casseto virus ransomware and then remove it without causing any additional harm to your important .Casseto virus files.

Also, keep in mind that viruses like Casseto 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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