Backdoor.Win32.Rbot

Detect Date 12/13/2010
Class Backdoor
Platform Win32
Description

Backdoor.Rbot is a family of Trojan programs for Windows, which offer the user remote access to victim machines. The Trojans are controlled via IRC, and have the following functions:

  • monitor networks for interesting data packets (i.e. those containing passwords to FTP servers, and e-payment systems such as PayPal etc.)

  • scan networks for machines which have unpatched common vulnerabilties (RPC DCOM, UPnP, WebDAV and others); for machines infected by Trojan programs (Backdoor.Optix, Backdoor.NetDevil, Backdoor.SubSeven and others) and by the Trojan components of worms (I-Worm.Mydoom, I-Worm.Bagle); for machines with weak system passwords

  • conduct DoS attacks

  • launch SOCKS and HTTP servers on infected machines

  • send the user of the program detailed information about the victim machine, including passwords to a range of computer games

For example Backdoor.Win32.Rbot.bni:

Every 50 milliseconds the backdoor creates a thread in which it will connect to the following server (if there is a network accessible):

www.starman.ee



www.if.ee

If in the course of 256 connection either of the servers returns an error saying that the resource is temporarily not available, the connection will be suspended for half a second.

The backdoor spreads via the Microsoft Windows DCOM RPC vulnerability. A full description of the vulnerability can be found in Microsoft Security Bulletin MS03-026 Microsoft Security Bulletin MS03-026 ().

The backdoor chooses IP addresses to attack, and if a machine under attack contains the DCOM RPC vulnerability, the backdoor will launch its code on the vulnerable machine.

If none of the computers under attack contain this vulnerability, the backdoor will try to connect using the following user names:

Administrator



Admin

and the following passwords:

Admin



root



asdfgh



password



00



000



0000



00000



000000



0000000



00000000



1



12



123



1234



12345



123456



1234567



12345678



123456789



secret



secure



security



setup



shadow



shit



sql



super



sys



system



abc123



access



adm



alpha



anon



anonymous



backdoor



backup



beta



bin



coffee



computer



crew



database



debug



default



demo



X



go



guest



hello



install



internet



login



mail



manager



money



monitor



network



new



newpass



nick



nobody



nopass



oracle



pass



passwd



server



poiuytre



private



public



qwerty



random



real



remote



ruler



telnet



temp



test



test1



test2



visitor



windows

If the backdoor manages to establish a connection, it will copy its executable file to the Windows system directory on the victim machine.