W32/Rbot-AZV

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-AZV is a worm and IRC backdoor Trojan for the Windows platform.

W32/Rbot-AZV spreads:

- to other network computers infected with: Troj/Kuang, Troj/Sub7, Troj/NetDevil, W32/MyDoom, W32/Bagle and Troj/Optix
- 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) and Dameware (CAN-2003-1030), ASN.1 (MS04-007).
- by copying itself to network shares protected by weak passwords

W32/Rbot-AZV 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.

When first run W32/Rbot-AZV copies itself to <System>\<random>.exe.

The following registry entries are created to run <random>.exe on startup:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Virtual CD v6
<random>.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Virtual CD v6
<random>.exe

Registry entries are set as follows:

HKCU\Software\Microsoft\OLE
Virtual CD v6
<random>.exe