A Chinese crime ring is building a huge botnet that is already composed of nearly 5 million Android device. Researchers at Check Point discovered attackers infecting the device with a strain of malware dubbed RottenSys that aggressively display ads on victims devices. The malicious code only targets the Chinese users, it is bundled in Chinese apps and it is infecting mostly phones mobile devices such as Huawei, Xiaomi, OPPO, vivo, LeEco, and Coolpad. According to Check Point botnet operators are currently making around $115,000 every ten days.”]
Source: https://securityaffairs.co/wordpress/70299/malware/rottensys-botnet.html