How to remove Cr1ptT0r Ransomware and decrypt your files

What is Cr1ptT0r Ransomware

Cr1ptT0r Ransomware is new type of ransomware, that uses network disk array vulnerability to infect user’s computers. This crypto ransomware encrypts data on network (cloud, NAS, Network Attached Storage) storage using a special encryption algorithm, and then requires a ransom of ~ 0.3 BTC to return files. Original title Cr1ptT0r is indicated in the ransom note and on the page on the OpenBazaar website. Developers call themselves a Cr1ptT0r team. The ELF ARM binary is used for Linux systems with a focus on embedded devices, but depending on the manufacturer it can be adapted for Windows. Ransomware does not append any extension, but uses _Cr1ptT0r_ file marker instead. Virus creates 2 files: _FILES_ENCRYPTED_README.txt and _cr1ptt0r_support.txt. First one is ransom note, that contains following message:

The Sodium crypto library and the asymmetric encryption algorithm “curve25519xsalsa20poly1305” (Curve25519, Salsa20, Poly1305) are used for encryption. The open 256-bit encryption key is located in the cr1ptt0r_logs.txt file, which also stores the list of encrypted files, and it is also added to the end of the encrypted files, just before the marker. Cr1ptT0r Ransomware uses the OpenBazaar site to “support” the affected users and selling the decoder. There are no decryption tool available yet, however, using instructions in this article can help you recover encrypted files. Follow the guide below to remove Cr1ptT0r Ransomware and decrypt your files in Windows 10, 8/8.1, Windows 7.

How Cr1ptT0r Ransomware infected your PC

Victims used the D-Link NAS DNS-320. If you have such a device model or close to it, then all models in the default settings contain the vulnerability that the attackers used. At the time of this writing, there was no information about which particular vulnerability was used. But it must be recalled that older models with outdated firmware are more vulnerable than those that received an update. We recommend you update your NAS device using this links: DNS-320 and DNS-320L. Virus can be also distributed by hacking through an unprotected RDP configuration, using email spam and malicious attachments, deceptive downloads, botnets, exploits, web injections, fake updates, repackaged and infected installers. Virus assigns certain ID with the victims, that is used to name those files and supposedly to send decryption key. In order to prevent infection with this type of threats in future we recommend you to use Norton Antivirus, SpyHunter 5, BitDefender or any reputable antivirus program.

1. Download Cr1ptT0r Ransomware Removal Tool
2. Get decryption tool for your 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 Cr1ptT0r Ransomware

Cr1ptT0r Ransomware files:

FILES_ENCRYPTED_README.txt
_cr1ptt0r_support.txt
_cr1ptt0r_logs.txt
cr1ptt0r
{randomfilename}.exe

Cr1ptT0r Ransomware registry keys:

no information

How to decrypt and restore your files

Use automated decryptors

Download Kaspersky RakhniDecryptor

Use following tool from Kaspersky called Rakhni Decryptor, that can decrypt your 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 your 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 Cr1ptT0r 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 your 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.

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 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 Cr1ptT0r 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 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. Cr1ptT0r 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.

Download MailWasher Pro