Sorry this took me so long to get back to you.
You still need to do several things.
First you need to remove that Killbox
Do this by Remove the files in the !killbox folder, by deleting the folder
C:\!killbox

Next I would like you to run ComboFix again. Remember close all windows, shut down antivirus and firewall as these could interfere with the cleaning process of the program. Don't touch the mouse while the program is running.
Once it is complete and produces the log then post back here with the log.