Summary

Summary
Action
More Information
| Affected operating systems | Windows |
|---|---|
| Characteristics |
|
| Protection available since | 16 December 2004 21:40:50 (GMT) |
| Detected by | All Sophos products |
- Free virus, spyware, and adware scan
- Test your existing anti-virus protection
- Find threats your anti-virus missed
Action

Summary
Action
More Information
Please follow the instructions for removing Trojans.
Windows NT/2000/XP/2003
In Windows NT/2000/XP/2003 you will also need to edit the following registry entry. The removal of this entry is optional in Windows 95/98/Me. Please read the warning about editing the registry.
At the taskbar, click Start|Run. Type 'Regedit' and press Return. The registry editor opens.
Before you edit the registry, you should make a backup. On the 'Registry' menu, click 'Export Registry File'. In the 'Export range' panel, click 'All', then save your registry as Backup.
Locate the HKEY_LOCAL_MACHINE entry:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
clfmon.exe
clfmon.exe
and delete it if it exists.
Close the registry editor.
More Information
Troj/Agent-BJ is a Trojan for the Windows platform.
Troj/Agent-BJ copies itself to the Windows system folder using the name clfmon.exe and drops a DLL file to the same folder called syspack.dll. These files may be hidden from view.
Troj/Agent-BJ sets the following registry entry to run itself automatically on log-on:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
clfmon.exe
clfmon.exe
This registry entry may also be hidden from view while the Trojan is running.
Troj/Agent-BJ also creates a number of registry entries under the main registry entry:
HKLM\Software\Microsoft\Windows\CurrentVersion\Ms4Hd\
The files and registry entries will become visible once the Trojan is no longer running on the computer.

