W32/Rbot-KW is a worm which attempts to spread to remote network shares.
W32/Rbot-KW also contains backdoor Trojan functionality, allowing unauthorised remote access to the infected computer via IRC channels while running in the background.
W32/Rbot-KW spreads to network shares with weak passwords as a result of the backdoor Trojan element receiving the appropriate command from a remote user.
W32/Rbot-KW copies itself to the Windows system folder as xpsp2.exe or with a random name and creates entries in the registry at the following locations to run itself on system startup:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\xp service pack 2
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\xp service pack 2