Android.Exprespam is a Trojan horse for Android devices that displays a fake message and steals personal information stored on the compromised device.
Android package file
The Trojan may arrive as a package with the following characteristics:
App for Android Devices (in Japanese)
Once installed, the application will display an icon with the text App for Android Devices (in Japanese).
Click for a more detailed description of Rapid Release and Daily Certified virus definitions.