W32/Rbot-GV

Please follow the instructions for removing worms.

You will also need to edit the following registry entries, if present. Please read the warning about editing the registry.

At the taskbar, click Start|Run. Type 'Regedit' and press Return. The registry editor opens.

Before you edit the registry, you should make a backup. On the 'Registry' menu, click 'Export Registry File'. In the 'Export range' panel, click 'All', then save your registry as Backup.

Locate the HKEY_LOCAL_MACHINE entries:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
Microsoft Update = winsys.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices\
Microsoft Update = winsys.exe

and delete them if they exist.

Each user has a registry area named HKEY_USERS\[code number indicating user]\. For each user locate the entries:

HKCU\[code number]\Software\Microsoft\Windows\CurrentVersion\Run\
Microsoft Update = winsys.exe
HKCU\[code number]\Software\Microsoft\Windows\CurrentVersion\RunServices\
Microsoft Update = winsys.exe

and delete them if they exist.

Close the registry editor.

Check your administrator passwords and review network security.

W32/Rbot-GV 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-GV copies itself to the Windows system folder as winsys.exe and creates registry entries called Microsoft Update under the following entries so as to run itself on system startup:

HKCU\Software\Microsoft\Windows\CurrentVersion\Run\
Microsoft Update = winsys.exe
HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices\
Microsoft Update = winsys.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
Microsoft Update = winsys.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices\
Microsoft Update = winsys.exe

W32/Rbot-GV may also log information to C:\Debug.txt. It will also attempt to steal CD keys related to various software and may be used to carry out DDOS attacks.