[NEW] bugbear_b.nasl

From: Vincent Renardias (vincentat_private)
Date: Mon Jun 09 2003 - 04:12:33 PDT

  • Next message: Renaud Deraison: "Re: [NEW] bugbear_b.nasl" 

    A new plugin to test for the presence of Bugbear.B's backdoor.
(It's currently untested as I don't currently have access to an infected
machine.)

	Cordialement,

-- 
Vincent RENARDIAS
Looking for a job : <http://www.renardias.com/cv.html>


#
# (C) 2003 StrongHoldNet
#
#
# Ref: http://www.f-secure.com/v-descs/bugbear_b.shtml
#
# UNTESTED

if (description)
{
 script_id(99999);
 script_version ("$Revision$");

 script_name(english:"Bugbear.B web backdoor");
 desc["english"] = "
Your system seems to be infected by the Bugbear.B virus
(its backdoor has been detected on port 81).

More information: http://www.f-secure.com/v-descs/bugbear_b.shtml

Solution: Use your favorite antivirus to disinfect your
system. Standalone disinfection tools also exist :
ftp://ftp.f-secure.com/anti-virus/tools/f-bugbr.zip

Risk factor : High";

 script_description(english:desc["english"]);
 script_summary(english:"Checks for Bugbear.B web backdoor");
 script_category(ACT_GATHER_INFO);
 script_family(english:"Backdoors", francais:"Backdoors");
 script_copyright(english:"This script is Copyright (C) 2003 StrongHoldNet");
 script_dependencie("find_service.nes");
 script_require_ports(81);
 exit(0);
}

include("http_func.inc");
include("http_keepalive.inc");

port = 81; # Not supposed to be on any other port.
if(!get_port_state(port))exit(0);


url = string(d, '/%NETHOOD%/');
req = http_get(item:url, port:port);
buf = http_keepalive_send_recv(port:port, data:req);
if( buf == NULL ) exit(0);
if(ereg(pattern:"^HTTP/[0-9]\.[0-9] 200 ", string:buf) && "Microsoft Windows Network" >< buf) {
  security_hole(port);
  exit(0);
}

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