Illuminating VoidLink: Technical analysis of the VoidLink rootkit framework

Elastic Security Labs provides technical analysis of VoidLink, a sophisticated Linux malware framework that combines traditional Loadable Kernel Modules (LKM) with eBPF technology to maintain persistence on compromised systems. The rootkit framework represents an advanced threat that operates at the kernel level, making it particularly dangerous for Linux environments. The analysis covers the technical implementation details of how VoidLink achieves persistence through dual mechanisms of LKM and eBPF. This represents a concerning evolution in Linux-targeted malware capabilities, combining traditional rootkit techniques with modern eBPF technology.