W32/Agobot-BF is an IRC backdoor Trojan and network worm.
W32/Agobot-BF is capable of spreading to computers on the local network protected by weak passwords.
When first run, W32/Agobot-BF moves itself to the Windows system folder as Svchos1.exe and creates the following registry entries so that it is run automatically on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
Configuration Loading = Svchos1.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices\
Configuration Loading = Svchos1.exe
On NT based versions of Windows the worm creates a new service named "Configuration Loading" with the startup property set to automatic, so that the service starts automatically each time Windows is started.
Each time W32/Agobot-BF is run it attempts to connect to a remote IRC server and join a specific channel.
W32/Agobot-BF then runs continuously in the background, allowing a remote intruder to access and control the computer via IRC channels.
W32/Agobot-BF attempts to terminate and disable various security related programs and attempts to prevent its own process from being deleted.