There is strength in numbers, and that is part of what is driving an increase in cryptocurrency mining malware. The idea is to infect as many mobile devices as possible, and tap into the combined computing power to crunch numbers for profit. Unfortunately, this seems to be a trend (on both mobile and PC)—security outfit Trend Micro says it

Source: Hot Hardware – Coinhive Monero Cryptocurrency Mining Malware Once Again Invades Google Play