How to remove SD (Unlock11) Ransomware and decrypt .[unlock11@protonmail.com].enc files

What is SD (Unlock11) Ransomware

If you are no longer able to access your files, then this is because ransomware infected your system. SD (Unlock11) Ransomware is not an exception since it ciphers users’ data with RSA + Salsa20 algorithm and adds brand new .[unlock11@protonmail.com].enc extension to each file. As an example, standard 1.mp4 will be renamed to 1.mp4.[unlock11@protonmail.com].enc after the encryption process is done. It is necessary to point out that .enc extension is more generic and has been exploited by several types of ransomware including MOTD, TrueCrypter, and Cryptohasyou. After successful encryption, the program automatically opens a ransom note ReadMeToDecrypte.txt, which contains the details on how to decrypt your data.

Some versions of SD replace desktop wallpaper for displaying the ransom information. In both cases, to unlock the affected files, users should reach out to cybercriminals via unlock11@protonmail.com. You are also allowed to attach 3 files (less than 5MB) so that swindlers could prove they can be trusted. After sending a message, you will be presumably required to pay a specific sum to unlock your data. Furthermore, they will give you recommendations on how to protect yourself from further attacks. Unfortunately, there is no other option at this moment to decrypt files configured by SD Ransomware without paying the ransom and getting the private keys. The best solution is either deleting SD ransomware from your computer and recovering data saved on external backups or waiting until a legitimate decryptor will be released later.

How SD (Unlock11) Ransomware infected your computer

When it comes to ransomware infections, developers found themselves exploiting different distribution channels such as trojans, e-mail spams, botnets, untrustworthy downloads, fake software updaters, and others. The most popular, however, is via fake messages marked as legitimate, urgent, or important. These e-mails usually contain malicious attachments that, once opened, execute the installation of malware. The range of attached files may vary from Microsoft Office documents, PDFs to executables and JavaScript files. Note that sometimes malicious attachments can include trojans that are meant to cause so-called chain infections. Unfortunately, it is pretty hard to avert the damage done by malware. This is why you should be very careful when browsing the web. Do not open unknown content, avoid clicking on ads/banners and trusting suspicious figures who ask you to do something. Identify a circle of trusted websites for different needs and download software only from them. This will decrease the chance of getting infected or spied by cybercriminals significantly. To remove SD (Unlock11) Ransomware from your system, follow the instructions listed below.

1. Download SD (Unlock11) Ransomware Removal Tool
2. Get decryption tool for .[unlock11@protonmail.com].enc 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 SD (Unlock11) Ransomware

SD (Unlock11) Ransomware files:


{randomfilename}.exe
NewSource.exe
ReadMeToDecrypte.txt

SD (Unlock11) Ransomware registry keys:

no information

How to decrypt and restore .[unlock11@protonmail.com].enc files

Use automated decryptors

Download Kaspersky RakhniDecryptor

Use following tool from Kaspersky called Rakhni Decryptor, that can decrypt .[unlock11@protonmail.com].enc files. Download it here:

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 .[unlock11@protonmail.com].enc files by uploading samples to Dr. Web Ransomware Decryption Service. Analyzing 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 SD (Unlock11) Ransomware and removed it 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 .[unlock11@protonmail.com].enc files

1. Download Stellar Data Recovery Professional.
2. Click Recover Data button.
3. Select type of files you want to restore and click Next button.
4. Choose 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.

Using Windows Previous Versions option:

1. Right-click on infected file and choose Properties.
2. Select Previous Versions tab.
3. Choose 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 alternative method.

Using Shadow Explorer:

1. Download Shadow Explorer program.
2. Run it and you will see 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 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 SD (Unlock11) Ransomware, in future

1. Get special anti-ransomware software

Use ZoneAlarm Anti-Ransomware

ZoneAlarm Anti-Ransomware Dashboard

ZoneAlarm Anti-Ransomware Alert

ZoneAlarm Anti-Ransomware Blocked

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.

2. Back up your files

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. SD Unlock11 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 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 is 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 very high level of anti-spam protection.