W32/Rbot-AYP

Please follow the instructions for removing worms.

You will also need to edit the following registry entries, if they are 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

HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices

and remove any reference to any file you deleted.

Close the registry editor.

W32/Rbot-AYP is a worm with backdoor functionality for the Windows platform.

W32/Rbot-AYP 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.

W32/Rbot-AYP spreads:

- to other network computers by exploiting common buffer overflow vulnerabilities, including: LSASS (MS04-011), RPC-DCOM (MS04-012), WKS (MS03-049) (CAN-2003-0812), WebDav (MS03-007), IIS5SSL (MS04-011) (CAN-2003-0719), UPNP (MS01-059), Veritas (CAN-2004-1172), Dameware (CAN-2003-1030) and ASN.1 (MS04-007)
- by copying itself to network shares protected by weak passwords

When first run W32/Rbot-AYP copies itself to <Windows system folder>\zvslmqb.exe.

The following registry entries are created to run zvslmqb.exe on startup:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
icrosoft Visual InterDevc
zvslmqb.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
icrosoft Visual InterDevc
zvslmqb.exe

Registry entries are set as follows:

HKCU\Software\Microsoft\OLE
icrosoft Visual InterDevc
zvslmqb.exe

HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N

HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1