W32/Rbot-FL

Please follow the instructions for removing worms.

Download and install the Microsoft patches mentioned above.

Check your administrator passwords and review network security.

Change any data that may have become compromised.

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.

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

HKU\[code number]\Software\Microsoft\Windows\
CurrentVersion\Run\

and remove any reference to any file you deleted.

Close the registry editor.

W32/Rbot-FL is a network worm and backdoor Trojan for the Windows platform.

W32/Rbot-FL spreads to unpatched machines affected by the vulnerabilities detailed in the following Microsoft Advisories:

http://www.microsoft.com/technet/security/bulletin/MS04-011.mspx.
http://www.microsoft.com/technet/security/bulletin/MS03-026.mspx.
http://www.microsoft.com/technet/security/bulletin/MS03-007.mspx.
http://www.microsoft.com/technet/security/bulletin/MS01-059.mspx. W32/Rbot-FL is a network worm and backdoor Trojan for the Windows platform.

W32/Rbot-FL allows a malicious user remote access to an infected computer.

The worm copies itself to a file named C:\ati2vid.exe and creates registry entries to run itself on startup under:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run\rxres32
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\rxres32
HKCU\Software\Microsoft\Windows\CurrentVersion\Run\rxres32

W32/Rbot-FL spreads using a variety of techniques including exploiting weak passwords on computers and SQL servers, exploiting operating system vulnerabilites (including DCOM-RPC, LSASS, WebDAV and UPNP) and using backdoors opened by other worms or Trojans.

W32/Rbot-FL can be controlled by a remote attacker over IRC channels. The infected computer can be used to perform any of the following functions:

Proxy server (SOCKS4)
FTP server
HTTP server
SMTP server
File system Manipulation
Port scanner
DDoS floods (TCP,UDP,SYN)
Remote shell (RLOGIN)
Packet sniffer
Key logger

The following patches for the operating system vulnerabilities exploited by W32/Rbot-FL can be obtained from the Microsoft website:

MS04-011
MS03-026
MS03-007
MS01-059