Cl0p is a ransomware that first appeared in 2019. It is a successor of the CryptoMix ransomware family, and it is known for its sophisticated encryption and its ability to steal data from infected systems. Cl0p is typically spread through phishing emails that contain malicious attachments, unprotected RDP, and exploit kits. Once it runs on a system, Cl0p will encrypt all of the files on the system using a strong encryption algorithm. The files will then be renamed with the extension “C_l_0P” and a ransom note will be displayed on the screen. The ransom note will demand a payment of large sums in Bitcoin in exchange for the decryption key.
Cl0p has been used to attack a wide range of businesses, including healthcare organizations, law firms, and technology companies. The attacks have caused significant financial losses and disruption to businesses.
In addition to its sophisticated encryption, Cl0p is also known for its ability to steal data from infected systems. Cl0p will typically steal sensitive data such as financial information, intellectual property, and customer data. The stolen data is then used to extort additional money from the victim or to be sold on the dark web.
Cl0p is a serious threat to businesses of all sizes. Businesses should take steps to protect themselves from Cl0p and other ransomware attacks. These steps include:
• Back up regularly. Keep backups offline or in a separate network to protect them from malware and other online threats.
• Keep software up to date. This includes the operating system, web browser, and any other software used regularly. Updates often include security patches that can protect secured systems from malware and other online threats.
• Use antivirus software. Regular scans for malware signatures are a necessary, though not sufficient, aspect of identifying and remediating network intrusions before threat groups can significantly impact an organization’s operations.
• Educate users on cybersecurity awareness. For example, users should understand not to open links or attachments in emails from senders that are not trusted and verified. These could contain malware that could infect important systems, or open a beachhead for further intrusion into secured networks.