This indicates an attack attempt against a Denial of Service vulnerability in Apple QuickTime Player.
The vulnerability is caused by an error when the vulnerable software handles a malicious "mov" file. A remote attacker may be able to exploit this to cause a denial of service condition on the affected system via a crafted "mov" file.
Apple QuickTime Player 7.7.2
Denial of Service: Remote attackers can crash vulnerable systems.
Currently we are unaware of any vendor supplied patch for this issue.