How to remove Booa Ransomware and decrypt .booa files

How to remove Booa Ransomware and decrypt .booa files

What is Booa Ransomware

Booa Ransomware is a complex encryption-type virus, that uses AES (Salsa20) algorithm to cipher user files. Data affected by this malware become unavailable without a special decryption key. The virus gets slightly modified every week and recent versions append the following extensions: .booa. Booa Ransomware does not touch system files but may block navigation to certain security websites using the Windows “hosts” file. When users try to download anti-malware or decryption tools, the pest won’t allow them to do it. You can easily download recommended programs from our site and read instructions on how to use them. Ransomware copies file _readme.txt, the so-called “ransom note”, on the desktop and to the folders with encrypted files. The text file contains information about the infection, ways to pay the ransom, and contact information. Below are the contents:

STOP Ransomware (.booa extensions)

From this file, you can learn, that developers of Booa Ransomware extort $490 (or $980, if not paid within 72 hours). Malware tends to encode personal data: videos, photos, documents, local e-mails, archives, those are the types of data, users will likely pay for. There are very small chances to recover files with .booa extensions. Nevertheless, Emsisoft (famous antivirus vendor) released special utilities called Emsisoft Decryptor for STOP Djvu, which can be downloaded below. These little programs can decrypt more than 300 variations but still can restore files in 2-3% of cases. In some situations, you will need a pair of the original and encrypted files, in most cases, data can be restored only if an offline key was used by malware (this happens due to malfunction or internet connection loss during the encryption process). Stellar Data Recovery Professional is one of the best file-recovery tools and, if used properly, may recover copies and duplicates of encrypted files, that were removed prior to infection. The only option for a successful 100% recovery is existing backups. This simple guide shows a clear path to remove Booa Ransomware and decrypt .booa files for free.

  1. Download Booa Ransomware Removal Tool
  2. Get decryption tool for .booa files
  3. Recover encrypted files with Stellar Data Recovery Professional
  4. Restore encrypted files with Windows Previous Versions
  5. Restore files with Shadow Explorer
  6. How to protect from threats like Booa Ransomware

How Booa Ransomware infected your PC

Virus modifies “hosts” file to block Windows updates, downloading antivirus programs, and visiting sites related to security news or offering security solutions. Booa Ransomware comes along with AZORult trojan, which was initially created to steal logins and passwords. The process of infection also looks like installing Windows updates, the malware shows a fake window, that mimics the update process.

fake windows update from Booa Ransomware

It uses rdpclip.exe to replace a legal Windows file and to launch an attack on a computer network. After encrypting the files, the encrypter is deleted using the delself.bat command file. Booa Ransomware virus is propagated via spam attack with malicious e-mail attachments and using manual PC hacking. Can be distributed by hacking through an unprotected RDP configuration, fraudulent downloads, exploits, web injections, fake updates, repackaged, and infected installers. Virus assigns a certain ID with the victims, which is used to name those files and supposedly to send decryption key. Great tools to protect against Booa Ransomware are Emsisoft Anti-Malware and Malwarebytes Anti-Malware.

  1. Download Booa Ransomware Removal Tool

    Download Removal Tool

    To remove Booa Ransomware completely, we recommend you to use WiperSoft AntiSpyware from WiperSoft. It detects and removes all files, folders, and registry keys of Booa Ransomware and prevents future infections by similar viruses.

    Alternative Removal Tool

    Download SpyHunter 5

    To remove Booa Ransomware completely, we recommend you to use SpyHunter 5 from EnigmaSoft Limited. It detects and removes all files, folders, and registry keys of Booa Ransomware. The trial version of SpyHunter 5 offers virus scan and 1-time removal for FREE.

How to remove Booa Ransomware manually

It is not recommended to remove Booa Ransomware manually, for safer solution use Removal Tools instead.

Booa Ransomware files:

_readme.txt
rdpclip.exe
delself.bat
{randomname}.exe

Booa Ransomware registry keys:

no information

How to decrypt and restore .booa files

Use automated decryptors

Download STOP Djvu Decryptor from Emsisoft (.booa variations)

STOP djvu ransomware decryptor from emsisoft

STOP Djvu Decryptor is able to decrypt .booa files, encrypted by Booa Ransomware. This tool was developed by Emsisoft. It works in automatic mode, but in most cases works only for files encrypted with offline keys. Download it here:

Download STOP Djvu Decryptor

Dr.Web Rescue Pack

Famous antivirus vendor Dr. Web provides free decryption service for the owners of its products: Dr.Web Security Space or Dr.Web Enterprise Security Suite. Other users can ask for help in the decryption of .booa files by uploading samples to Dr. Web Ransomware Decryption Service. Analysis of files will be performed free of charge and if files are decryptable, all you need to do is purchase a 2-year license of Dr.Web Security Space worth $120 or less. Otherwise, you don’t have to pay.

If you are infected with Booa Ransomware and removed it from your computer, you can try decrypting your files. Antivirus vendors and individuals create free decryptors for some crypto-lockers. To attempt to decrypt them manually you can do the following:

Use Stellar Data Recovery Professional to restore .booa files

stellar data recovery professional

  1. Download Stellar Data Recovery Professional.
  2. Click the Recover Data button.
  3. Select the type of files you want to restore and click the Next button.
  4. Choose a location where you would like to restore files from and click the Scan button.
  5. Preview found files, choose ones you will restore, and click Recover.

Using Windows Previous Versions option:

  1. Right-click on the infected file and choose Properties.
  2. Select the Previous Versions tab.
  3. Choose a particular version of the file and click Copy.
  4. To restore the selected file and replace the existing one, click on the Restore button.
  5. In case there is no items in the list choose an alternative method.

Using Shadow Explorer:

  1. Download the Shadow Explorer program.
  2. Run it and you will see a screen listing of all the drives and the dates that shadow copy was created.
  3. Select the drive and date that you want to restore from.
  4. Right-click on a folder name and select Export.
  5. In case there are no other dates in the list, choose an alternative method.

If you are using Dropbox:

  1. Login to the DropBox website and go to the folder that contains encrypted files.
  2. Right-click on the encrypted file and select Previous Versions.
  3. Select the version of the file you wish to restore and click on the Restore button.

How to protect the computer from viruses, like Booa Ransomware, in future

1. Get special anti-ransomware software

Use BitDefender Anti-Ransomware

bitdefender anti-ransomware

Famous antivirus vendor BitDefender released a free tool, that will help you with active anti-ransomware protection, as an additional shield to your current protection. It will not conflict with bigger security applications. If you are searching complete internet security solution consider upgrading to full version of BitDefender Internet Security 2018.

2. Back up your files

idrive backup

As an additional way to save your files, we recommend online backup. Local storages, such as hard drives, SSDs, flash drives, or remote network storages can be instantly infected by the virus once plugged in or connected to. Booa Ransomware uses some techniques to exploit this. One of the best services and programs for easy automatic online backup is iDrive. It has the most profitable terms and a simple interface. You can read more about iDrive cloud backup and storage here.

3. Do not open spam e-mails and protect your mailbox

mailwasher pro

Malicious attachments to spam or phishing e-mails are the most popular method of ransomware distribution. Using spam filters and creating anti-spam rules is good practice. One of the world leaders in anti-spam protection is MailWasher Pro. It works with various desktop applications and provides a very high level of anti-spam protection.

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