SectorB06 using Mongolian language in lure document
SectorB06 is a state sponsored threat actor group active especially within Asia. They have been exploiting vulnerabilities in Microsoft Office’s Equation Editor which Microsoft removed in January 2018, which in this case seems to be a highly obfuscated version of CVE-2017-11882. The malware we analyzed in this case are sent seemingly only after they already have a basic foothold in their target organizations.