Adversaries may modify plist files to automatically run an application when a user logs in. Starting in Mac OS X 10.7 (Lion), users can specify certain applications to be re-opened when a user logs into their machine after reboot. While this is usually done via a Graphical User Interface (GUI) on an app-by-app basis, there are property list files (plist) that contain this information as well located at
An adversary can modify one of these files directly to include a link to their malicious executable to provide a persistence mechanism each time the user reboots their machine .
|M1042||Disable or Remove Feature or Program||
This feature can be disabled entirely with the following terminal command:
Holding the Shift key while logging in prevents apps from opening automatically. 
|ID||Data Source||Data Component|
Monitoring the specific plist files associated with reopening applications can indicate when an application has registered itself to be reopened.