The logical question would be what are you doing just prior to this or have you noticed anything 'updating' in the background?
What software are you using for full-time antivirus and firewall protection & what is the name of the 'malware download' you used?
Stinger is a specialised removal agent only for certain infections and unless you have exactly what it is designed to remove it wont help.
I suggest running the free version of THIS software and update before running. Let it remove anything it finds and reboot immediately if asked to.