Monitoring-Tool:Android/SimChecker.A is a trojanized SimChecker Pro application that collects geolocation and other confidential information from a device. Upon rebooting the device, this application sends out this stolen information to the author's e-mail address and SMS number that it comes preconfigured with.
Since the trojanized application is already preconfigured by the author, it displays a password prompt to access the configuration UI.
SimChecker.A prompting for a password to be entered
However, even if the user chooses not to access this configuration UI, SimCheck.A will still collect the device's information each time the device reboots. The following are the information that SimCheck.A sends out to the author's SMS number and e-mail address:
Via SMS messages
- location retrieved through the device's WiFi network, the accuracy, and the street address
- location retrieved through the device's GPS, the accuracy, and the street address
- location retrieved through WPS, the accuracy, and the street address
- same location information sent out via SMS messages, plus the altitude, bearing and speed on the GPS location
- IMSI, if SIM requires PIN to unlock
- SIM serial number, if SIM does not use PIN
- Operator code and service provider name
- Call logs (incoming, outgoing and missed)
To send out emails, SimCheck.A uses the server side script located at https://[...]trackdroid.org[...]/sendmail.php.
While apps with such behavior may be legitimately used by the device's authorized user, they are classified by security programs as riskware because in the hands of unauthorized users, they can also be used to cause damage to the user's data or the device.
If you are confident that you are aware of the risks involved in using the program and consent to its use, you may choose to keep it installed on your device.