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Remove Aviso Ransomware (Crypt888) and Decrypt “Lock” Files

stf-aviso-ransomware-crypt888-virus-mircop-brazil-ransom-note

The Crypt888 ransomware cryptovirus is back and has a new variant called “Aviso”. The new variant targets users from Brazil, hence the ransom note is written in Portuguese. Aviso means “Warning” in Portuguese. The ransom note starts with that word in capital letters, placed on top, so it looks like a name. Thus, malware researchers have dubbed it this way.

The virus will encrypt files on a compromised computer and add a prefix to the encrypted files contrary to most ransomware viruses, which append extensions. To see how to remove the virus and how you can decrypt your locked files, read the article in full.

Threat Summary

Name Aviso Virus
Type Ransomware, Cryptovirus
Short Description The virus is also known as Crypt888 and Mircop. It demands a ransom as payment for decrypting locked files. Different variants target specific countries.
Symptoms The ransomware puts the prefix “Lock” in the file name of each encrypted file
Distribution Method Spam Emails, Email Attachments, .Zip archives
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User Experience Join Our Forum to Discuss Aviso 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.

Aviso Ransomware – Infection Spread

The Aviso virus is targeted mainly at users from Brazil. That does not exclude the possibility for this ransomware to hit other countries. One of the main methods for spreading the infection relies on social engineering tactics and the targeted audience to speak Portuguese. A file called ENDESA_FACTURA.ZIP contains the payload file. Spam email campaigns usually spread that .zip archive as an attachment. The email will try to convince you that it is urgent for you to have a look in the attached document (called an invoice). Opening the file releases the virus, and your PC becomes infected.

The ransomware creators could be spreading the payload file not only with targeted attacks but through file-sharing networks and social media platforms as well. Do not open any executables or archives, especially if you received them in a suspicious email with an unknown origin. Always scan these types of files with security software and check them for their signatures and size beforehand. You should take a closer look at the ransomware preventing tips from our forum thread.

Aviso Ransomware – In-Depth Analysis

Malware researchers have discovered a new variant of the Crypt888 ransomware and have dubbed it “Aviso”. The latest version of the virus is primarily targeting Brazilian users and speakers of the Portuguese language. Among these victims, the new variant is most effective as its ransom note is written in Portuguese. You can look at the ransom note and why researchers gave the name Aviso to this threat, from the picture below:

stf-aviso-ransomware-crypt888-virus-mircop-brazil-ransom-note

The text in Portuguese reads:

Olá Sr(a),
TODOS os seus arqurvos foram BLOQUEADOS e esse bloqueio somente ser á DESBLOQUEAdo caso pague o valor de RS 2000.00 (Dois Mil Reais) em Bitcoons Após o pagamento desse valor, basta me enviar um pnnt para o email_
infomacaonh@gmail.com
que estarei lhe enviando o programa com a senha para descryptografar/desbloquear o seus arquivos.
Caso o pagamento nao seja efetuado, todos os seus dados serao bloqueados
permanentemente e o seu computador será totalmente formatado
(Perdendo assim, todas as informa ções s contidas nele, incluindo senhas de email, bancarias…) O pagamento deverá ser efetuado nesse endereco de Bitcoin

This message is shown after the encryption of your files. The word “Aviso” translates into English as “Warning”. From the message it is also understood that you must pay 2000 Brazilian Reals to a Bitcoin address. That money amounts to 633 US dollars or exactly 1 Bitcoin according to today’s exchange rates. The email address infomacaonh@gmail.com is given as a contact.

The Crypt888 cryptovirus first variant is known as Mircop ransomware and demanded the shocking sum of 48 Bitcoins. There are two more desktop backgrounds that are used by Crypt888 which come with the current variant, but they probably target other countries more than Brazil. You can see them below:

stf-aviso-ransomware-crypt888-virus-mircop-brazil-ransom-screen-photoshop-variant

and this one

stf-aviso-ransomware-crypt888-virus-mircop-brazil-ransom-message-variant
Image Source: avg.com

After executing its payload the Aviso variant of the ransomware could set new values in the Windows Registry for making itself more sustainable. Those values are put in entries of the registry and their aim is to make the virus start automatically with every boot of the Windows operating system. Next, the virus will encrypt files and show its ransom message demanding payment. A threat is put in the message stating that unless you pay your data will get formatted.

In any circumstance, you shouldn’t be thinking of paying these cybercriminals because paying them is not a solution. The extortionists will use that financial support for a new ransomware project and encrypt files again, maybe reaching more people. Researchers from AVG have a working decryptor utility for Crypt888 and they are positive that it works with Aviso. You can read more about it and decrypt files encrypted by Crypt888 ransomware from the corresponding article on our blog.

The Aviso variant of the virus encrypts nearly 100 file types, judging by the following list with different extensions:

→.3gp, .7z, .apk, .avi, .bmp, .cdr, .cer, .chm, .conf, .css, .csv, .dat, .db, .dbf, .djvu, .dbx, .docm, ,doc, .epub, .docx .fb2, .flv, .gif, .gz, .iso, .ibooks,.jpeg, .jpg, .key, .mdb, .md2, .mdf, .mht, .mobi, .mhtm, .mkv, .mov, .mp3, .mp4, .mpg, .mpeg, .pict, .pdf, .pps, .pkg, .png, .ppt, .pptx, .ppsx, .psd, .rar, .rtf, .scr, .swf, .sav, .tiff, .tif, .tbl, .torrent, .txt, .vsd, .wmv, .xls, .xlsx, .xps, .xml, .ckp, .zip, .java, .py, .asm, .c, .cpp, .cs, .js, .php, .dacpac, .rbw, .rb, .mrg, .dcx, .db3, .sql, .sqlite3, .sqlite, .sqlitedb, .psd, .psp, .pdb, .dxf, .dwg, .drw, .casb, .ccp, .cal, .cmx, .cr2

stf-aviso-ransomware-crypt888-virus-mircop-brazil-crypted-lock-file

All encrypted files will have the prefix Lock put in front of them. For example, if a file named Document.docx is encrypted it will receive the name Lock.Document.docx. You can see that from the image on the right. The used encryption algorithm is unknown, but researchers have decrypted it.

The Aviso ransomware is very likely to delete the Shadow Volume Copies of the Windows operating system with the following command:

→vssadmin.exe delete shadows /all /Quiet

Continue reading to see how to remove this malware and check out ways in which to decrypt your data if the AVG decryptor didn’t work for you or you need alternatives for future-proofing your backup strategy.

Remove Aviso Ransomware and Restore “Lock” Files

If your computer got infected with the Aviso ransomware virus, you should have some experience in removing malware. You should get rid of this ransomware as fast as possible before it can have the chance to spread further and infect more computers. You should remove the ransomware and follow the step-by-step instructions guide given below. In case the decryptor from AVG doesn’t work, you can check out other ways to recover your data. For that, see the step titled 2. Restore files encrypted by Aviso Virus.

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Berta Bilbao

Berta is a dedicated malware researcher, dreaming for a more secure cyber space. Her fascination with IT security began a few years ago when a malware locked her out of her own computer.

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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.


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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 Aviso Virus from Windows.


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

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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 Aviso 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 Aviso 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 Aviso 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 Aviso 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 Aviso Virus.

Ransomware infections and Aviso 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 Aviso Virus from Mac OS X.


Step 1: Uninstall Aviso 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 Aviso 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 Aviso 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 Aviso 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 Aviso 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 Aviso 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 Aviso Virus:


Download

SpyHunter for Mac



Step 3 (Optional): Try to Restore Files Encrypted by Aviso Virus.

Ransomware infections and Aviso 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.


Aviso Virus FAQ

What is Aviso Virus ransomware and how does it work?

Aviso 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 Aviso Virus ransomware infect my computer?

Via several ways.Aviso 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 Aviso 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 .Aviso Virus files?

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

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

Also, keep in mind that viruses like Aviso 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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