Trojans are written in AutoLISP mixed with VBA and are aimed at changing users browser start pages and displaying adverts. Trojan authors have even turned their sights to AutoCAD. Trojan-Downloader.acad.Qfas.b and Trojan.Acad.o. Trojan.o is responsible for changing the browsers homepage and directing the browser to advertising sites. The Trojan appears mainly in China, India and Vietnam, according to KSN statistics.”]
Source: https://securelist.com/autocad-new-platform-for-start-page-trojans/57195/