TellYouThePass ransomware was an old dormant ransomware supposed to be dead. But Log4j's Log4Shell vulnerability, resurrect it and it jumps into action once again. It targets mostly Chinese speaking population.

Apache Log4j is a Java-based logging utility. The Log4j vulnerability also know as Log4Shell is tracked as CVE-2021-44228. It was disclosed last week by LunaSec researchers.

Log4Shell is an Remote Code Execution (RCE) vulnerability (CVE-2021-44228) in one of the most used enterprise Logging product Apache Log4j. Its affecting Apache Log4j versions 2.0 through 2.14.1.

ALPHV BlackCat Ransomware or simply BlackCat Rasomware is an advance and a sophisticated piece of malware written in Rust programming language. It encrypts data of business users and corporate networks using a combination of AES-128 (CTR mode) and RSA-2048 algorithms, and then requires a large ransom in BTC or Monero for the decryption key.

Cerber Ransomware encrypt Windows and Linux machines by exploiting Atlassian Confluence (CVE-2021-26084) and GitLab (CVE-2021-22205) servers remote code execution vulnerabilities.