globalc.dll is a Trojan.NtRootK-J. globalc.dll opens a back door. globalc.dll monitors user Internet activity and private information. It sends stolen data to a hacker site. Related files: %System%\RtKit\rtkit.exe %System%\RtKit\globalc.dll %System%\RtKit\npf.sys %System%\RtKit\rtkit.log More info: http://www.sophos.com/virusinfo/analyses... Removal: Remove globalc.dll from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.