描述：Skull.A病毒通过安装含有病的Sis文件被安装到手机上。感染病毒之后，系统的图标和桌面会被病毒改写。并且会修改以下文件：
c:\System\Apps\About\About.aif
c:\System\Apps\About\About.app
c:\System\Apps\AppInst\AppInst.aif
c:\System\Apps\AppInst\Appinst.app
c:\System\Apps\AppMngr\AppMngr.aif
c:\System\Apps\AppMngr\Appmngr.app
c:\System\Apps\Autolock\Autolock.aif
c:\System\Apps\Autolock\Autolock.app
c:\System\Apps\Browser\Browser.aif
c:\System\Apps\Browser\Browser.app
c:\System\Apps\BtUi\BtUi.aif
c:\System\Apps\BtUi\BtUi.app
c:\System\Apps\bva\bva.aif
c:\System\Apps\bva\bva.app
c:\System\Apps\Calcsoft\Calcsoft.aif
c:\System\Apps\Calcsoft\Calcsoft.app
c:\System\Apps\Calendar\Calendar.aif
c:\System\Apps\Calendar\Calendar.app
c:\System\Apps\Camcorder\Camcorder.aif
c:\System\Apps\Camcorder\Camcorder.app
c:\System\Apps\CbsUiApp\CbsUiApp.aif
c:\System\Apps\CbsUiApp\CbsUiApp.app
c:\System\Apps\CERTSAVER\CERTSAVER.aif
c:\System\Apps\CERTSAVER\CERTSAVER.APP
c:\System\Apps\Chat\Chat.aif
c:\System\Apps\Chat\Chat.app
c:\System\Apps\ClockApp\ClockApp.aif
c:\System\Apps\ClockApp\ClockApp.app
c:\System\Apps\CodViewer\CodViewer.aif
c:\System\Apps\CodViewer\CodViewer.app
c:\System\Apps\ConnectionMonitorUi\ConnectionMonitorUi.aif
c:\System\Apps\ConnectionMonitorUi\ConnectionMonitorUi.app
c:\System\Apps\Converter\Converter.aif
c:\System\Apps\Converter\converter.app
c:\System\