Home > Ransomware > .ANN Files Virus – How to Remove It + Restore Encrypted Data

.ANN Files Virus – How to Remove It + Restore Encrypted Data

This article has been created in order to explain what is Ann Ransomware and how to remove it from your computer plus how you can try and get back .ANN encrypted files.

The .ANN files virus is the type of malware which aims to encrypt the files on your computer, preventing you from accessing them. The Ann Ransomware virus, which uses this file extension aims to get victims to write to the e-mails of the cyber-criminals with the idea that they are paid to restore the files in some form. And to further stress the victim, the crooks give a deadline of 7 days to make a payment in their ransom note file, called #README_ANN#.rtf. If you are one of the victims of Ann Ransomware, we recommend that you read this article completely and learn how you can remove this ransomware infection from your computer and how you can try and restore files, encrypted by it.

Threat Summary

Name .ANN Files Virus
Type Ransomware, Cryptovirus
Short Description Aims to encrypt the files on the computers, compromised by it and then make sure to download.
Symptoms The files have the .ANN file extension added to them. The ransomware virus also drops a ransom note type of file, called #README_ANN#.rtf.
Distribution Method Spam Emails, Email Attachments, Executable files
Detection Tool See If Your System Has Been Affected by malware


Malware Removal Tool

User Experience Join Our Forum to Discuss .ANN Files 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.

.ANN Files Virus – Spread

In order to infect the computers of users, the .ANN files virus may trick victims into downloading and installing a malicious e-mail attachment on the computers of victims. This attachment’s primary goal is to get users to download and run it. Such e-mail attachments often pretend to be various different documents of importance, like:

  • Invoices.
  • Receipts.
  • Banking statements.
  • Letters of confirmation.

The e-mail senders are also usually well faked, and in most cases they tend to imitate big companies, like eBay, PayPal, DHL and others.

Furthermore, what also seems to be a possible method of replication is that the malware infection file may be uploaded on suspicious software-providing sites or torrent sites as a fake program of some sort. The most often imitated programs of this type usually tend to be:

  • Game patches or game cracks.
  • Software activators.
  • Key generators.
  • Online license activators.
  • Other forms of hacktools.
  • Portable programs.

.ANN Files Virus – More Information

Once an infection with the .ANN files virus has been conducted, the ransomware virus aims to drop it’s payload files on the victim’s computer. The payload files of this virus may be dropped in the following Windows folders:

  • %AppData%
  • %Local%
  • %LocalLow%
  • %Roaming%
  • %Temp%

The .ANN files virus is the type of malware, that may first check if it’s running on a virtual drive or if it has previously infected the victim machine. If not, then the ransomware may proceed to encryption and may display it’s ransom note file. The ransom note file of the .ANN ransomware may contain the following ransom message:



We are realy sorry to inform you that ALL YOUR FILES WERE ENCRYPTED

by our automatic software. It became possible because of bad server security.


Please don’t worry, we can help you to RESTORE your server to original

state and decrypt all your files quickly and safely!


Files are not broken!!!

Files were encrypted with ABS-128+RSA-2048 crypto algorithms.

There is no way to decrypt your files without unique decryption key and special software.

Your unique decryption key is securely stored on our server. For our safety, all

information about your server and your decryption key will be automaticaly DELETED

AFTER 7 DAYS! You will irrevocably lose all your data!

Please note that all the attempts to recover your files by yourself or using third party

tools will result only in irrevocable loss of your data!

Please note that you can recover files only with your unique decryption key, which

stored on our side. If you will use the help of third parties, you will only add a middleman.


Please write us to the e-mail (write on English or use professional translator):


You have to send your message on each of our 3 emails due to the fact that the message may not reach their intended recipient for a variety of reasons!

In subject line write your personal ID:

We recommed you to attach 3 encrypted files to your message. We will demonstrate that we can recover your files.

Please note that files must not contain any valuable information and their total size must be less than 5Mb.


Please be sure that we will find common languge. We will restore all the data and give

you recommedations how to configure the protection of your server.

We will definitely reach an agreement ;I


If you did not receive the answer from the aforecited emails for more then 24 hours please send us

Bitmessages from a web browser through the webpage {URL}. Below is a tutorial on how to send bitmessage via web browser:

1. Open in your browser the link {url} up and make the registration by entering name email and password.

2. You must confirm the registration, return to your email and follow the instructions that were sent to you.

3. Return to site and click “Login” label or use link httpszfibitmsgmefusersfsign in, enter your email and

password and click the “Sign in” button.

4. Click the “Create Random address” button.

5. Click the “New massage” button.

6. Sending message:

To: Enter address: BM-ZcUPmiEDstzWCSZmbtbeJeUNHquERLl

Subject: Enter your ID: I l

Message: Describe what you think necessary.

Click the “Send message” button.

In addition to this, the .ANN files virus may also modify the following registry entries to automatically run the ransom note and the malicious files of this virus. The registry sub-keys in which entries may be created could be the following:

→ HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run

Furthermore, the .ANN ransomware virus may also delete the backed up files by Windows by running a malicious script which directly deletes the shadow volume copies of your PC by entering commands as an administrator in the Windows Command Prompt. The commands may be the following:

→ sc stop VVS
sc stop wscsvc
sc stop WinDefend
sc stop wuauserv
sc stop BITS
sc stop ERSvc
sc stop WerSvc
cmd.exe /C bcdedit /set {default} recoveryenabled No
cmd.exe /C bcdedit /set {default} bootstatuspolicy ignoreallfailures
C:\Windows\System32\cmd.exe” /C vssadmin.exe Delete Shadows /All /Quiet

.ANN Files Virus – Encryption Process

In order to encrypt the files on your computer, the .ANN files virus is the type of malware which will first scan for the files it want to encrypt, while excluding important Windows directories, like %System% or %System32%. The files that Ann ransomware may detect based on their file extensions likely are the following:

  • Documents.
  • Videos.
  • Pictures and any form of image files.
  • Backup file format.
  • Online signatures.
  • Databases.
  • Archives.
  • Audio files.
  • Virtual operating systems.

The ransomware supposedly encrypts the files by using the combination of the following two algorithms:

  • AES-128
  • RSA-2048

After the encryption, unique decryption key that is also encrypted itself is generated and the only ones with access seem to be the cyber-criminals. The files have the .ANN file extension and they appear like the following:

Remove .ANN Files Virus and Restore .ANN Encrypted Files

If you want to make sure that this virus Is eliminated from your computer, you can go ahead and follow the removal instructions underneath this article. These instructions are divided in manual and automatic removal methods. Be advised, that for maximum effectiveness and a safe removal, security experts strongly recommend that users download and run a scan, using an advanced anti-malware program. Such software is created to fully remove all traces of Ann Ransomware and other malware that may currently reside on your PC and then make sure that it stays protected against future infections as well.

If you want to recover files, that are encrypted with the .ANN file extension added to them, we do advise that you follow the instructions underneath this article in step “2. Restore files, encrypted by Ann Ransomware”. The methods there may not be fully effective against this ransomware virus, but they may help you recover as many files as possible via these alternative approaches.

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.

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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.


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

About the .ANN Files Virus Research

The content we publish on SensorsTechForum.com, this .ANN Files Virus how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific malware and restore your encrypted files.

How did we conduct the research on this ransomware?

Our research is based on an independent investigation. We are in contact with independent security researchers, and as such, we receive daily updates on the latest malware and ransomware definitions.

Furthermore, the research behind the .ANN Files Virus ransomware threat is backed with VirusTotal and the NoMoreRansom project.

To better understand the ransomware threat, please refer to the following articles which provide knowledgeable details.


1. How to Recognize Spam Emails with Ransomware
2. How Does Ransomware Encryption Work?
3. How to Decrypt Ransomware Files
4. Ransomware Getting Greedier and Bigger, Attacks Increase by 40%
5. 1 in 5 Americans Victim of Ransomware

Windows Mac OS X

How to Remove .ANN Files Virus from Windows.

Step 1: Boot Your PC In Safe Mode to isolate and remove .ANN Files Virus


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 .ANN Files 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 .ANN Files 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 .ANN Files 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.

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 .ANN Files 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.


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.

Video Guide for Automatic and Fast Removal

Step 5 (Optional): Try to Restore Files Encrypted by .ANN Files Virus.

Ransomware infections and .ANN Files 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 recommended Data Recovery software by clicking on the link underneath:

Simply click on the link and on the website menus on the top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.

Step 6: How to Restore Files Encrypted by Ransomware (Video Guide)

Windows Mac OS X

Get rid of .ANN Files Virus from Mac OS X.

Step 1: Uninstall .ANN Files Virus and remove related files and objects

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 .ANN Files 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 .ANN Files 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 .ANN Files 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 .ANN Files 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 .ANN Files 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

Tip: ~ is there on purpose, because it leads to more LaunchAgents.

Click the button below below to download SpyHunter for Mac and scan for .ANN Files Virus:


SpyHunter for Mac

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

Ransomware infections and .ANN Files 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 recommended 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.

.ANN Files Virus FAQ

What is .ANN Files Virus ransomware and how does it work?

.ANN Files 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 .ANN Files Virus ransomware infect my computer?

Via several ways..ANN Files 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 .ANN Files 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 ..ANN Files Virus files?

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

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

Also, keep in mind that viruses like .ANN Files 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.

How to Report Ransomware to Authorities?

In case your computer got infected with a ransomware infection, you can report it to the local Police departments. It can help authorities worldwide track and determine the perpetrators behind the virus that has infected your computer. Below, we have prepared a list with government websites, where you can file a report in case you are a victim of a cybercrime:

Cyber-security authorities, responsible for handling ransomware attack reports in different regions all over the world:

Reports may be responded to in different timeframes, depending on your local authorities.

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