W32/Sdbot-AAI is a worm and IRC backdoor Trojan for the Windows platform.
W32/Sdbot-AAI runs continuously in the background, providing a backdoor server which allows a remote intruder to gain access and control over the computer via IRC channels.
When first run W32/Sdbot-AAI copies itself to <System>\Networksystem.exe.
The following registry entries are created to run Networksystem.exe on startup:
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Microsoft Network
Networksystem.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Microsoft Network
Networksystem.exe