W32/Rbot-XW

Please follow the instructions for removing worms.

Please read the instructions for removing W32/Rbot-XW.

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

W32/Rbot-XW spreads using a variety of techniques including exploiting weak passwords on computers and SQL servers, exploiting operating system vulnerabilities (including DCOM-RPC and LSASS).

W32/Rbot-XW can be controlled by a remote attacker over IRC channels. The backdoor component of W32/Rbot-XW can be instructed by a remote user to perform functions from a pre-defined list. W32/Rbot-XW is a network worm and IRC backdoor Trojan for the Windows platform.

W32/Rbot-XW spreads using a variety of techniques including exploiting weak passwords on computers and SQL servers, exploiting operating system vulnerabilities (including DCOM-RPC and LSASS).

W32/Rbot-XW can be controlled by a remote attacker over IRC channels. The backdoor component of W32/Rbot-XW can be instructed by a remote user to perform the following functions:

start an FTP server
start a web server
take part in distributed denial of service (DDoS) attacks
log keypresses
packet sniffing
port scanning
download/execute arbitrary files
start a remote shell (RLOGIN)
terminate processes

The worm copies itself to a file named lsasss.exe in the Windows system folder and creates the following registry entries:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run
System32
lsasss.exe

HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices
System32
lsasss.exe

HKCU\Software\Microsoft\Windows\CurrentVersion\Run
System32
lsasss.exe

Patches for the operating system vulnerabilities exploited by W32/Rbot-XW can be obtained from Microsoft at:

http://www.microsoft.com/technet/security/bulletin/ms04-011.mspx
http://www.microsoft.com/technet/security/bulletin/ms04-012.mspx