Threat hunting converting SIGMA to YARA

This guide demonstrates how to translate Sigma detection rules into YARA rules compatible with the VirusTotal YARA module, enabling behavioral matching across processes, DNS queries, registry changes, and Linux file events. It walks through four practical examples (base64 decode on macOS, DNS queries tied to remote access tools, disabling System Restore via registry, and shell scripts in /etc/profile.d), and concludes with a mapping between Sigma taxonomy and VirusTotal behavioral fields to streamline TTP-driven hunting.