ThreatFabric says the Anatsa Android banking trojan is now being used to target American and Canadian banks.
The kicker—infected apps are available via the official Play Store

Anatsa Targets North America; Uses Proven Mobile Campaign Process
Anatsa targets North America again: ThreatFabric uncovers a new Android banking Trojan campaign using Google Play to compromise mobile banking apps.
(www.threatfabric.com)