How to remove DORRA Ransomware and decrypt .DORRA files

What is DORRA Ransomware

DORRA Ransomware is a malicious software variant from the Makop ransomware family, designed to encrypt files on a victim’s computer, making them inaccessible until a ransom is paid. This ransomware typically spreads through phishing emails, malicious advertisements, drive-by downloads, and pirated software. Once it infects a computer, DORRA encrypts files using strong encryption algorithms such as AES, Salsa20, and RSA, and appends the .DORRA extension to the filenames. For example, 1.jpg becomes 1.jpg.[2AF20FA3].[dorradocry@outlook.com].DORRA. After encryption, DORRA generates a ransom note named +README-WARNING+.txt, which informs the victim that their files have been encrypted and stolen. The note warns against attempting to decrypt the files independently, as this could corrupt them and lead to permanent data loss. It instructs the victim to contact the attackers via the provided email address (dorradocry@outlook.com) and to send their unique ID, embedded in the filenames, to receive further instructions on how to decrypt their files. The note also threatens to publish the victim’s data on the internet if the ransom is not paid.

Currently, there are no guaranteed decryption tools available for DORRA ransomware. The encryption methods used are highly secure, and decryption typically requires the key held by the attackers. Victims are advised not to pay the ransom, as there is no guarantee that the attackers will provide the decryption key, and paying the ransom may encourage further criminal activity. Instead, victims should check resources like the No More Ransom project for any available decryption tools, restore their files from backups if available, and seek assistance from cybersecurity professionals to safely remove the ransomware and explore potential recovery options.

How DORRA Ransomware infects computers

DORRA Ransomware typically spreads through several common vectors:

Phishing Emails: Cybercriminals use social engineering techniques to trick users into opening malicious email attachments or clicking on links that download the ransomware.
Malvertising: Malicious advertisements can redirect users to exploit kits that download the ransomware onto their systems.
Drive-By Downloads: Visiting compromised websites can result in the automatic download of ransomware without the user’s knowledge.
Pirated Software: Downloading and installing pirated software can also introduce ransomware to a system.
Exploiting System Vulnerabilities: Attackers may exploit unpatched vulnerabilities in software to gain access and deploy ransomware.

1. Download DORRA Ransomware Removal Tool
2. Get decryption tool for .DORRA 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 DORRA Ransomware

DORRA Ransomware files:


+README-WARNING+.txt
{randomname}.exe


DORRA Ransomware registry keys:

no information

How to decrypt and restore .DORRA files

Use automated decryptors

Download Kaspersky RakhniDecryptor

Use the following tool from Kaspersky called Rakhni Decryptor, that can decrypt .DORRA files. Download it here:

Download RakhniDecryptor

There is no purpose to pay the ransom because there is no guarantee you will receive the key, but you will put your bank credentials at risk.

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 .DORRA files by uploading samples to Dr. Web Ransomware Decryption Service. Analyzing 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 DORRA Ransomware and removed from your computer, you can try to decrypt 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 .DORRA files

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

Download Stellar Data Recovery Professional

Using Windows Previous Versions option:

1. Right-click on infected file and choose Properties.
2. Select 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 are no items in the list, choose an alternative method.

Using Shadow Explorer:

1. Download 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 computer from viruses, like DORRA Ransomware, in future

1. Get special anti-ransomware software

Use ZoneAlarm Anti-Ransomware

Famous antivirus brand ZoneAlarm by Check Point released a comprehensive tool, that will help you with active anti-ransomware protection, as an additional shield to your current protection. The tool provides Zero-Day protection against ransomware and allows you to recover files. ZoneAlarm Anti-Ransomware is compatible with all other antiviruses, firewalls, and security software except ZoneAlarm Extreme (already shipped with ZoneAlarm Anti-Ransomware) or Check Point Endpoint products. The killer features of this application are: automatic file recovery, overwrite protection that instantly and automatically recovers any encrypted files, file protection that detects and blocks even unknown encryptors.

Download ZoneAlarm Anti-Ransomware

2. Back up your files

As an additional way to save your files, we recommend online backup. Local storage, such as hard drives, SSDs, flash drives, or remote network storage can be instantly infected by the virus once plugged in or connected to. DORRA 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

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.

Download MailWasher Pro