By: Ravie Lakshmanan A pair of reports from cybersecurity firms SEKOIA and Trend Micro sheds light on a new campaign undertaken by a Chinese threat actor named Lucky Mouse that involves leveraging a trojanized version of a cross-platform messaging app to backdoor systems. Infection chains leverage a chat application called MiMi, with its installer files compromised to download and install HyperBro samples for the Windows operating system and rshell artifacts for Linux and macOS. As many as 13 different entities located in Taiwan and the Philippines have been at the receiving end of the attacks, eight of whom have been...