CISA Reports PRC Hackers Using BRICKSTORM for Long-Term Access in U.S. Systems
Dec 05, 2025
Network Security / Zero-Day
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday released details of a backdoor named BRICKSTORM that has been put to use by state-sponsored threat actors from the People's Republic of China (PRC) to maintain long-term persistence on compromised systems. "BRICKSTORM is a sophisticated backdoor for VMware vSphere and Windows environments," the agency said . "BRICKSTORM enables cyber threat actors to maintain stealthy access and provides capabilities for initiation, persistence, and secure command-and-control." Written in Golang, the custom implant essentially gives bad actors interactive shell access on the system and allows them to browse, upload, download, create, delete, and manipulate files The malware, mainly used in attacks targeting governments and information technology (IT) sectors, also supports multiple protocols, such as HTTPS, WebSockets, and nested Transport Layer Security (TLS), for command-and-control (C2), DNS-o...
