tokens: The malicious capabilities observed in the second stage include the following : Upload attacker-specified files to C2 servers Get list of installed applications Get device metadata Inspect itself to get a list of launchable activities Retrieves PDF , txt , doc , xls , xlsx , ppt , pptx files found on external storage Send SMS Retrieve text messages Track device location Handle limited attacker commands via out of band text messages Record surrounding audio Record calls Record video Retrieve account information such as email addresses Retrieve contacts Removes copies of itself if any additional APKs are downloaded to external storage .