Chinese hackers are using fake base transceiver stations (BTS towers) to distribute Android banking malware via spoofed SMS messages. BTS is a piece of equipment usually installed on cellular telephone towers to spread malware. Swearing Trojan has capability to steal bank credentials and other sensitive information from victim Android devices and bypass two-factor authentication by replacing a user’s legit SMS app with a malicious version that intercepts incoming SMS messages. The maximum range of a BTS antenna may be as low as 10-22 miles, the technique is very successful.
Source: https://thehackernews.com/2017/03/rogue-bts-android-malware.html