C:\WINDOWS\system32\rundll32.exe
C:\windows\Download\svhost32.exe
O2 - BHO: Vision - {6671A431-5C3D-463d-A7CF-5587F9B7E191} - C:\PROGRA~1\MMSASS~1\mmsass~1.dll
O3 - Toolbar: ????? - {B580CF65-E151-49C3-B73F-70B13FCA8E86} - C:\Program Files\BaiDu\bar\BaiduBar.dll (file missing)
O4 - HKLM\..\Run: [xy] C:\windows\Download\svhost32.exe
剩下的部分呢
谁解释下,O4项的自启动都是什么意思