W32/Rbot-RN

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-RN is a network worm which attempts to spread via network shares. The worm contains backdoor functions that allow unauthorised remote access to the infected computer via IRC channels while running in the background.

The worm spreads to network shares with weak passwords and also by using the LSASS security exploit (MS04-011), the RPC-DCOM security exploit (MS03-039) and the WebDav security exploit (MS03-007).

Once installed, W32/Rbot-RN will attempt to perform a variety of actions including stealing CD keys and participating in distributed denial-of-service (DDoS) attacks when instructed to do so by a remote attacker.

The worm tries to exploit backdoors and vulnerabilites used by the MyDoom family of worms. W32/Rbot-RN is a network worm which attempts to spread via network shares. The worm contains backdoor functions that allow unauthorised remote access to the infected computer via IRC channels while running in the background.

The worm spreads to network shares with weak passwords and also by using the LSASS security exploit (MS04-011), the RPC-DCOM security exploit (MS03-039) and the WebDav security exploit (MS03-007).

When run, W32/Rbot-RN copies itself to the Windows System folder as a hidden, read-only, system file named msctfg32.exe.

The worm then creates the following registry entries so as to run itself on computer logon:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run
msctfg32
msctfg32.exe

HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices
msctfg32
msctfg32.exe

W32/Rbot-RN also creates the following registry entry:

HKCU\Software\Microsoft\OLE
msctfg32
msctfg32.exe

Once installed, W32/Rbot-RN will attempt to download and run files from the internet, steal CD keys, create a SOCKS4 server and HTTP proxy server when instructed to do so by a remote attacker.

The worm also tries to gain access to login to MS SQL servers and send EXEC commands to open a command shell on the server.

W32/Rbot-RN attempts to participate in distributed denial-of-service (DDoS) attacks using a variety of TCP, UDP, ICMP commands.

The worm tries to exploit backdoors and vulnerabilites used by the MyDoom family of worms.