A previously unknown piece of a larger puzzle called “Turla,” one of the most complex Advanced Persistent Threats (APTs) uncovered by researchers at Kaspersky Lab in August, remained hidden on some systems for at least four years. Turla campaign is linked to Russia and has in the past exploited a variety of Windows vulnerabilities, at least two of which were zero-days, to infect government institutions, embassies, military, education, research, and pharmaceutical companies in more than 45 countries.
Source: https://thehackernews.com/2014/12/powerful-linux-trojan-turla.html