> Mustang Panda Adds Signed Windows Rootkit to CoolClient Backdoor for Stealth
[DATE: 14/08/2026 13:08]
[LANGUAGE: EN]
The threat actor known as HoneyMyte (aka Mustang Panda) has been observed deploying an updated version of the CoolClient backdoor with a signed Windows kernel-mode rootkit that can hide and protect malicious processes, files, registry objects, and command-and-control (C2) network information.
Russian cybersecurity vendor Kaspersky said it identified victims in Myanmar, Mongolia, Pakistan,