The Koobface botnet, one of the most efficient social engineering driven botnets, is entering the Xmas season with a newly introduced template spoofing a YouTube video page. In between enticing the visitor into installing a bogus Adobe Flash Player Update, the botnet masters are using social engineering tactics. Researchers at Recorded Future report a rise in cracked Cobalt Strike and other open-source adversarial tools with easy-to-use interfaces. Researchers have spotted notable code overlap between the Sunburst backdoor and a known Turla weapon.
Source: https://threatpost.com/koobface-stocking-stuffer-malware-120109/73183/