Storm-1175 is a cybercriminal group known for deploying Medusa ransomware and exploiting public-facing applications for initial access. They have been observed exploiting a critical deserialization vulnerability in GoAnywhere MFT, tracked as CVE-2025-10035, which could lead to command injection and potential RCE. Microsoft Defender researchers identified exploitation activity aligned with TTPs attributed to Storm-1175, including the use of post-compromise techniques that involve creating a group named “ESX Admins” in the domain.