W32/Rbot-XE

Please follow the instructions for removing worms.

W32/Rbot-XE is a network worm with a backdoor functionality for the Windows platform that allows unauthorised remote access to the infected computer via IRC channels while running in the background as a service process.

W32/Rbot-XE spreads to the weakly protected network shares and via network security exploits as a result of the backdoor Trojan element receiving the appropriate command from a remote user. W32/Rbot-XE is a network worm with a backdoor functionality for the Windows platform that allows unauthorised remote access to the infected computer via IRC channels while running in the background as a service process.

W32/Rbot-XE spreads to the weakly protected network shares and via network security exploits as a result of the backdoor Trojan element receiving the appropriate command from a remote user.

Once executed W32/Rbot-XE copies itself to the Windows system folder with the filename mcafee32.exe, and in order to be able to run automatically when Windows starts up sets the registry entry:

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Shell
Explorer.exe mcafee32.exe

W32/Rbot-XE also may set the following registry entries:

HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N

HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1

W32/Rbot-XE may modify the following registry entry to restrict anonymous
enumeration of SAM accounts:

HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymousSAM

W32/Rbot-XE can add and delete network shares and users on the infected computer. The worm can also change the network logon rights of accounts in the local system policy.

W32/Rbot-XE may change the security settings of Microsoft Internet Explorer by modifying entries in the registry at the following location:

HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3