Troj/Freddy2001 is a backdoor Trojan that allows others remote access to your computer over a network.
It copies itself to C:\Windows\wintool.exe and adds the registry key
HKLM\Software\Microsoft\Windows\CurrentVersion
\Run\wintool.exe
which points at this location. It will also drop the file C:\windows\watchdll.dll
which is used to provide the Trojan with keylogging capabilities.