Android/SmsSpy.A is distributed as an apk file, it leaves an icon after its installation but this will be removed after its first run. The user will not know the running of the spyware.
Android/SmsSpy.A runs at background, it monitors the incoming and outgoing SMS messages, logs them to a file in the sd-card, in a XML formatted. Then Android/SmsSpy.A uploads the file to a FTP server periodically.
The hacker needs to call a special number to launch the configuration UI. The FTP server address, interval of the uploading and the special number to be called are configurable.