Summary

Summary
Action
More Information
| Affected operating systems | Windows |
|---|---|
| Included in our products from | February 2005 (3.90) |
| Protection available since | 10 January 2005 13:30:37 (GMT) |
| Detected by | All Sophos products |
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\
.norton
and remove any reference to any file you deleted.
Close the registry editor.
More Information
Troj/Boxed-H is a DoS flooder Trojan.
Troj/Boxed-H copies itself with the filename RCHOST.EXE to either the system subfolder of the Windows folder or to the folder Application Data\Microsoft\Internet Explorer. Troj/Boxed-H then sets an entry in the registry at the following location so as to run itself on system startup:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
.norton
If Troj/Boxed-H finds an entry already at this location in the registry it attempts to copy itself to the file it finds there.
Troj/Boxed-H runs continuously in the background sending packets to addresses as part of a DoS attack.
