gwisin

Gwisin is a targeted ransomware group first publicly reported in July 2022, believed to operate primarily within South Korea. The group’s name means “ghost” in Korean, reflecting its stealthy approach. Gwisin has been observed conducting attacks on critical sectors, including healthcare, pharmaceutical, and manufacturing industries. It uses custom-built payloads tailored for each victim, capable of encrypting both Windows and Linux/VMware ESXi environments, and often executes attacks durin