c-ares TCP Use-After-Free UAF Exploitation via Crafted DNS Response
Detects indicators of exploitation attempts targeting the c-ares asynchronous DNS library, specifically focusing on Use-After-Free (UAF) vulnerabilities. The rule monitors for the presence of known proof-of-concept (PoC) file artifacts, execution of processes using specific command-line flags associated with c-ares exploit research, suspicious shell/calculator spawning from common network-enabled applications (curl, node, python), and anomalous high-frequency DNS-over-TCP traffic patterns.
Microsoft Sentinel (KQL)
