How to remove Crypt0r ransomware

Crypt0r ransomware – a new crypto malware string that implements EternalBlue exploit

Crypt0r is a new ransomware family which was analyzed by Carbon Black security researchers.^[1] According to researchers, the new strain of malware is relatively similar to the infamous WannaCry and NotPetya ransomware viruses because it has multiple similar functions, as well as implemented EternalBlue exploit. After performing multiple modifications to system files, Crypt0r ransomware scans the device for personal files, such as .jpg, .mp3, .avi, .html, .doc, .txt and many others. Once detected, the malware encrypts the data with the help of RSA and AES encryption algorithms and modifies files, making them unusable. To recover the access, victims are urged to contact cybercrooks via decrypt0r-help@protonmail.com – the email is included inside the ransom note _HELP.txt, which is dropped into each of the affected folders. Crypt0r virus uses a random generator for file extensions, for example, .qqjuBOaf, .2lwnPp2B, or .aqhATfjK.

In the first stages of the infection, Crypt0r ransomware copies notepad.vbs file into the Temp folder. It contains instructions written in Visual Basic script language and is later executed with the help of cmd.exe process, consequently removing Shadow Volume Copies. Due to this, users are unable to recover personal files after Crypt0r ransomware removal.

After system modification, Crypt0r ransomware contacts the C2^[2] server with the help of eleven hard-coded .onion addresses via TOR network. It attempts to connect to the remote server in an endless loop until the connection is established, and then sends victim's ID and the encryption key to hackers.

Finally, Crypt0r virus drops a brief ransom note:

All your files and documents are encrypted by Crypt0r.

We provide a decryption service. If you need our help, contact our customer service via mail:

decrypt0r-help@protonmail.com

All we need is your personal service ID: 

Experts do not recommend contacting cybercriminals, as they might simply ignore victims, even after the payment in Bitcoin or other cryptocurrency is transferred. Additionally, such act would prove Crypt0r ransomware authors that ransomware works, and it will consequently encourage them to produce more dangerous viruses.

Therefore, you should remove Crypt0r ransomware from your computer as soon as possible, and only then proceed with file recovery. You can use anti-malware software that is capable of detecting the threat – we recommend using FortectIntego pr SpyHunterCombo Cleaner.^[3] 

While there is a low chance of recovering your data without a personal key or backups, you can always try third-party software. Additionally, security researchers are always working on free decryptors, and new tools are being released for different ransomware viruses over time.

Lastly, Crypt0r ransomware is equipped with the EternalBlue MS17-010 exploit,^[4] which was also used by WannaCry. Exploits allow cybercriminals to execute code remotely, so patching your software is essential.

Follow these simple tips if you want to protect your PC from ransomware viruses

Ransomware developers typically use multiple different distribution techniques to ensure the virus will affect as many victims as possible. Therefore, while browsing the internet, there are several things to look out for in order to avoid unwanted infections.

One of the best-known tactics to deliver ransomware is spam emails. Crooks often employ bots to send out thousands of phishing emails to potential victims. These messages either include a contaminated attachment or a malicious link. Therefore, be careful with all the emails from unknown sources – open them if you are sure they are legitimate.

Another ransomware distribution method which is becoming increasingly popular among cybercriminals is brute-force attacks. They use a preset list of most commonly used passwords and use a Remote Desktop Protocol to inject malware manually. Thus, use secure passwords an all your accounts, and also make use of a VPN.

Other tips would include:

• Employ anti-malware software and keep it up to date;
• Patch software as soon as updates are available;
• Avoid visiting high-risk sites, such as torrent, file-sharing, porn, gambling, etc.;
• Enable the ad-blocking plugin;
• Avoid internet connections that are not secured (HTTP instead of HTTPS).

Remove Crypt0r ransomware with the help of security software ASAP

Be aware that ransomware viruses can also travel with the help of backdoor- a specific malicious software that is created to download and install other malware, such as ransomware. For that reason, Crypt0r virus might be not the only infection present on your machine, which can result in personal information disclosure or even identity theft.

Thus, do not risk it and scan your device with reputable anti-virus software – it will be able to detect all the infections and remove Crypt0r ransomware in the process. Note that malware can hinder the operation of security application. In such a case, enter Safe Mode with Networking and perform Crypt0r ransomware removal from there.