W32/Rbot-IL is a worm which attempts to spread to remote network shares. It also contains backdoor Trojan functionality, allowing unauthorised remote access to the infected computer via IRC channels while running in the background as a service process.
W32/Rbot-IL 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-IL copies itself to the Windows system folder as a random file name and creates the following registry entries so as to run itself on system startup:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\Microsoft Update
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\Microsoft Update
HKCU\Software\Microsoft\Windows\CurrentVersion\Run\Microsoft Update
W32/Rbot-IL may set the following registry entries:
HKLM\SOFTWARE\Microsoft\Ole\EnableDCOM = "N"
HKLM\SYSTEM\CurrentControlSet\Control\Lsa\restrictanonymous = "1"
W32/Rbot-IL may delete the C$, D$, E$, IPC$ and ADMIN$ network shares on the host computer.