ntdll32.dll is a Trojan.Multidr-EU. ntdll32.dll opens a back door. Related files: %System%\ntdll32.dll %System%\ranx.dll %System%\god.sys %System%\svch0st.exe %Windows%\suniu.exe %System%\mmdat.dat %System%\wdata32.dll %Windows%\123.jpg More info: http://www.sophos.com/virusinfo/analyses... Removal: Remove ntdll32.dll from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.