"Copycat App," identified as a.frau.longjian.a, appears to Android users as an update of the extremely popular NetDragon 91 Assistant app. When the user chooses to update with this fraudulent app, it automatically downloads other repackaged apps in the background that consume the user's data.
The main nefarious behaviors of these repackaged apps are to:
- Subscribe to fee based services via SMS without the user's knowledge, resulting in unwanted bill charges
- Access and collect various details about user's device, such as phone information (e.g. phone number, IMEI, IMSI) and user's apps, invading the user's privacy.