Security researchers at Lookout Mobile Security discovered that various apps uploaded to Google Play Store containing hidden android malware, that can turn your mobile device into crypto-currency miners. The malware uses a botnet of infected Android Smartphones to mine for currency. Such malware does not steal data. Instead, they are capable of mining Bitcoin, Litecoin and Dogecoin using the victim’s device. Both malicious apps are available as free downloads for devices running Android 2.2 or later, but they were not created by the same developer.
Source: https://thehackernews.com/2014/03/android-malware-found-on-google-play.html