Fast16: Pre-Stuxnet Sabotage Tool Was Built to Subvert Nuclear Weapons Simulations
Summary
Symantec Threat Hunter Team details Fast16, a pre-Stuxnet sabotage tool that targeted LS-DYNA and AUTODYN nuclear simulations. It patches in-memory instructions via a kernel driver and hook engine, using three mechanisms to tamper with high-explosive and uranium density calculations, with network propagation. The article notes defense recommendations and the significance of domain-specific sabotage similar to Stuxnet.