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- #
- # This script was written by Michel Arboi <arboi@alussinan.org>
- # Well, in fact I started from a simple script by Thomas Reinke and
- # heavily hacked every byte of it :-]
- #
- # GPL
- #
- # Script audit and contributions from Carmichael Security <http://www.carmichaelsecurity.com>
- # Erik Anderson <eanders@carmichaelsecurity.com>
- # Added links to the Bugtraq message archive and Microsoft Knowledgebase
- #
- # There was no information on the BugBear protocol.
- # I found a worm in the wild and found that it replied to the "p" command;
- # the data look random but ends with "ID:" and a number
- # Thomas Reinke confirmed that his specimen of the worm behaved in the
- # same way.
- # We will not provide the full data here because it might contain
- # confidential information.
- #
- # References:
- #
- # Date: Tue, 1 Oct 2002 02:07:29 -0400
- # From:"Russ" <Russ.Cooper@RC.ON.CA>
- # Subject: Alert:New worms, be aware of internal infection possibilities
- # To:NTBUGTRAQ@LISTSERV.NTBUGTRAQ.COM
- #
-
- if(description)
- {
- script_id(11135);
- script_bugtraq_id(2524);
- script_cve_id("CVE-2001-0154"); # For MS01-020 - should be changed later
- script_version ("$Revision: 1.10 $");
- name["english"] = "Bugbear worm";
- name["francais"] = "Ver Bugbear";
-
- script_name(english:name["english"], francais: name["francais"]);
-
- desc["english"] = "
- BugBear backdoor is listening on this port.
- A cracker may connect to it to retrieve secret
- information, e.g. passwords or credit card numbers...
-
- The BugBear worm includes a key logger and can kill
- antivirus or personal firewall softwares. It propagates
- itself through email and open Windows shares.
- Depending on the antivirus vendor, it is known as: Tanatos,
- I-Worm.Tanatos, NATOSTA.A, W32/Bugbear-A, Tanatos, W32/Bugbear@MM,
- WORM_BUGBEAR.A, Win32.BugBear...
-
- http://www.sophos.com/virusinfo/analyses/w32bugbeara.html
- http://www.ealaddin.com/news/2002/esafe/bugbear.asp
- http://securityresponse.symantec.com/avcenter/venc/data/w32.bugbear@mm.html
- http://vil.nai.com/vil/content/v_99728.htm
-
- Reference : http://online.securityfocus.com/news/1034
- Reference : http://support.microsoft.com/default.aspx?scid=KB;en-us;329770&
-
- Solution:
- - Use an Anti-Virus package to remove it.
- - Close your Windows shares
- - Update your IE browser
- See 'Incorrect MIME Header Can Cause IE to Execute E-mail Attachment'
- http://www.microsoft.com/technet/security/bulletin/MS01-020.mspx
-
- Risk factor : Critical";
-
- desc["francais"] = "
- La backdoor BugBear Θcoute sur ce port.
- Un pirate peut se connecter dessus pour retrouver des informations
- secrΦtes, par exemple des mots de passe ou des numΘros de carte de
- crΘdit...
-
- Le ver BugBear inclut un 'key logger' et peut tuer les logiciels
- antivirus ou firewalls personnels. Il se propage via le courrier
- Θlectronique ou les partages Windows ouverts.
- Selon le vendeur d'antivirus, il est aussi nommΘ : Tanatos,
- I-Worm.Tanatos, NATOSTA.A, W32/Bugbear-A, Tanatos, W32/Bugbear@MM,
- WORM_BUGBEAR.A, Win32.BugBear...
-
- http://www.sophos.com/virusinfo/analyses/w32bugbeara.html
- http://www.ealaddin.com/news/2002/esafe/bugbear.asp
- http://securityresponse.symantec.com/avcenter/venc/data/w32.bugbear@mm.html
- http://vil.nai.com/vil/content/v_99728.htm
-
- Solution:
- - Utilisez un antivirus pour le supprimer.
- - Fermez vous partages Windows
- - Mettez α jour votre navigateur IE
- Cf. 'Incorrect MIME Header Can Cause IE to Execute E-mail Attachment'
- http://www.microsoft.com/technet/security/bulletin/MS01-020.mspx
-
- Risk factor : Critical";
-
- script_description(english:desc["english"], francais:desc["francais"]);
-
- summary["english"] = "Detect Bugbear worm";
- summary["francais"] = "DΘtecte le ver Bugbear";
- script_summary(english:summary["english"], francais:summary["francais"]);
-
- script_category(ACT_GATHER_INFO);
-
- script_copyright(
- english:"This script is Copyright (C) 2002 Michel Arboi & Thomas Reinke",
- francais:"Ce script est copyright (C) 2002 Michel Arboi & Thomas Reinke");
- family["english"] = "Backdoors";
- family["francais"] = "Backdoors";
- script_family(english:family["english"], francais:family["francais"]);
- script_require_ports(36794);
- script_dependencies("find_service.nes");
- exit(0);
- }
-
- #
- include("misc_func.inc");
-
- port = 36794;
-
- if (! get_port_state(port)) exit(0);
- soc = open_sock_tcp(port);
- if (! soc) exit(0);
-
- # We just need to send a 'p' without CR
- send(socket: soc, data: "p");
- # I never saw a buffer bigger than 247 bytes but as the "ID:" string is
- # near the end, we'd better use a big buffer, just in case
- r = recv(socket: soc, length: 65536);
- close(soc);
-
- if ("ID:" >< r) {
- security_hole(port);
- register_service(port: port, proto: "bugbear");
- exit(0);
- }
-
- msg = "
- This port is usualy used by the BugBear backdoor.
- Although Nessus was unable to get an answer from the worm,
- you'd better check your machine with an up to date
- antivirus scanner.
-
- Risk factor: Medium";
- security_warning(port: port, data: msg);
-
-