Code Red X Worm Detection - Active Check

# SPDX-FileCopyrightText: 2001 SecuriTeam
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

CPE = "cpe:/a:microsoft:internet_information_services";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.10713");
  script_version("2024-08-08T05:05:42+0000");
  script_tag(name:"last_modification", value:"2024-08-08 05:05:42 +0000 (Thu, 08 Aug 2024)");
  script_tag(name:"creation_date", value:"2005-11-03 14:08:04 +0100 (Thu, 03 Nov 2005)");
  script_tag(name:"cvss_base", value:"10.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_cve_id("CVE-2001-0500");
  script_name("Code Red X Worm Detection - Active Check");
  script_category(ACT_ATTACK); # nb: Direct access to a .exe file might be already seen as an attack
  script_tag(name:"qod_type", value:"remote_active");
  script_copyright("Copyright (C) 2001 SecuriTeam");
  script_family("Malware");
  script_dependencies("gb_microsoft_iis_http_detect.nasl");
  script_require_ports("Services/www", 80);
  script_mandatory_keys("microsoft/iis/http/detected");

  script_tag(name:"solution", value:"1) Remove the file root.exe from both directories:

  \inetpub\scripts

  and

  \program files\common files\system\msadc

  2) Install an updated antivirus program (this will remove the Explorer.exe Trojan)

  3) Set SFCDisable in hklm\software\microsoft\windows nt\currentversion\winlogon to: 0

  4) Remove the two newly created virtual directories: C and D (Created by the Trojan)

  5) Make sure no other files have been modified.

  It is recommended that hosts that have been compromised by Code Red X would reinstall the operating system from scratch and patch it accordingly.");

  script_xref(name:"URL", value:"http://www.securiteam.com/securitynews/5GP0V004UQ.html");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/2880");
  script_xref(name:"URL", value:"http://www.securiteam.com/windowsntfocus/5WP0L004US.html");
  script_xref(name:"URL", value:"http://www.cert.org/advisories/CA-2001-11.html");
  script_xref(name:"URL", value:"http://www.microsoft.com/technet/itsolutions/security/tools/redfix.asp");

  script_tag(name:"summary", value:"Your machine is infected with the 'Code Red' worm. Your Windows system seems to be compromised.");

  script_tag(name:"solution_type", value:"Mitigation");

  exit(0);
}

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

# nb: No get_app_location() as IIS is not "directly" affected and the initial version of
# this VT had only checked for the banner of IIS.
if(!port = get_app_port(cpe:CPE, service:"www"))
  exit(0);

soc = http_open_socket(port);
if(!soc)
  exit(0);

req = http_get(item:"/scripts/root.exe?/c+dir+c:\+/OG", port:port);
send(socket:soc, data:req);
buf = http_recv(socket:soc);
http_close_socket(soc);

pat1 = "<DIR>";
pat2 = "Directory of C";

if ( ("This program cannot be run in DOS mode" >< buf) || (pat1 >< buf) || (pat2 >< buf) )
{
  security_message(port);
  exit(0);
} else {

  soc = http_open_socket(port);
  if ( ! soc )
    exit(0);

  req = http_get(item:"/c/winnt/system32/cmd.exe?/c+dir+c:\+/OG", port:port);
  send(socket:soc, data:req);

  buf = http_recv(socket:soc);
  http_close_socket(soc);

  if (("This program cannot be run in DOS mode" >< buf) || (pat1 >< buf) || (pat2 >< buf) )
  {
    security_message(port);
    exit(0);
  }
}