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4553 Parasite Mothership Detect

🗓️ 03 Nov 2005 00:00:00Reported by Copyright (C) 2002 ViolatingType 
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Malware detection on host, backdoor '4553' found, possible compromis

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Code
# SPDX-FileCopyrightText: 2002 Violating
# 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

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.11187");
  script_version("2023-08-01T13:29:10+0000");
  script_tag(name:"cvss_base", value:"9.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_tag(name:"last_modification", value:"2023-08-01 13:29:10 +0000 (Tue, 01 Aug 2023)");
  script_tag(name:"creation_date", value:"2005-11-03 14:08:04 +0100 (Thu, 03 Nov 2005)");
  script_name("4553 Parasite Mothership Detect");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2002 Violating");
  script_family("Malware");
  script_dependencies("find_service.nasl");
  script_require_ports(21227, 21317);

  script_tag(name:"solution", value:"Re-install this host.");

  script_tag(name:"summary", value:"The backdoor '4553' seems to be installed on this host, which indicates
  it has been compromised.");

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

  exit(0);
}

foreach port( make_list( 21227, 21317 ) ) {

  if( ! get_port_state( port ) )
    continue;

  soc = open_sock_tcp( port );
  if( ! soc )
    continue;

  send( socket:soc, data:"-0x45-" );
  data = recv( socket:soc, length:1024 );

  close( soc );
  if( "0x53" >< data || "<title>UNAUTHORIZED-ACCESS!</title>" >< data ) {
    security_message( port:port );
  }
}

exit( 0 );

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03 Nov 2005 00:00Current
7.3High risk
Vulners AI Score7.3
69
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