From LedHed's Wiki
Microsoft Remote Assistance
Command Line
msra.exe /saveasfile <path> <password>
msra /saveasfile \\SERVER\SHARE\RemoteAssistance\MyTicked.msrcIncident 123456
msra.exe /openfile <path> <password>
msra /openfile \\dc1\Users\Jeff\RemoteAssistance\1246.msrcIncident 123456