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.
ToxicEye is remote access trojan written in C# and is controlled via Telegram. Its main know form of proliferation is via phishing email. If victim is successfully tricked into executing its executable it will install itself silently and install other malware.
PuTTY is a free and open-source terminal emulator, serial console and network file transfer application. It supports several network protocols, including SCP, SSH, Telnet, rlogin, raw socket connection and can connect to a serial port. It is widely used to connect, manage and control servers through the internet securely.
Povlsomware Ransomware is an open source ransomware available on github. It is written in C# and claims to test the "ransomware protection claims" by Anti-malware / security solutions.
BlackNET RAT is a modern open source remote access Trojan written in VB.net with it's command and control back-end is written in beautiful admin panel written in PHP.