ESET researchers have unveiled what they claim to be the first-ever UEFI rootkit being used in the wild. The LoJax malware is part of a malware campaign conducted by the infamous Sednit group. Sednit is a state-sponsored hacking group believed to be a unit of GRU, a Russian secret military intelligence agency. The group has been associated with a number of high profile attacks, including the DNC hack just before the U.S. 2016 presidential election, according to researchers.
Source: https://thehackernews.com/2018/09/uefi-rootkit-malware.html