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