Nombre: Worm/Bagz.D.3 Descubierto: 22/10/2004 Tipo: Gusano En circulación (ITW): Sí Número de infecciones comunicadas: Medio-alto Potencial de propagación: Medio Potencial dañino: Medio-bajo Fichero estático: No Tamaño: ~ 155.000 Bytes Versión del VDF: 6.28.00.32
General Método de propagación: • Correo electrónico Alias: • Symantec: W32.Bagz.E@mm • Mcafee: W32/Bagz.e@MM • Kaspersky: Email-Worm.Win32.Bagz.d • TrendMicro: WORM_BAGZ.D • Sophos: W32/Bagz-D • Grisoft: I-Worm/Bagz.D • VirusBuster: I-Worm.Bagz.G Plataformas / Sistemas operativos: • Windows 98 • Windows 98 SE • Windows NT • Windows ME • Windows 2000 • Windows XP • Windows 2003 Efectos secundarios: • Bloquea el acceso a ciertos sitios web • Bloquea el acceso a portales de seguridad • Suelta ficheros • Suelta ficheros dañinos • Contiene su propio motor para generar mensajes de correo • Modificaciones en el registro Ficheros Se copia a sí mismo en las siguientes ubicaciones: • %SYSDIR% \about.doc%espacios libres% .exe • %SYSDIR% \admin.doc%espacios libres% .exe • %SYSDIR% \archivator.doc%espacios libres% .exe • %SYSDIR% \archives.doc%espacios libres% .exe • %SYSDIR% \ataches.doc%espacios libres% .exe • %SYSDIR% \docs.doc%espacios libres% .exe • %SYSDIR% \documentation.doc%espacios libres% .exe • %SYSDIR% \help.doc%espacios libres% .exe • %SYSDIR% \inbox.doc%espacios libres% .exe • %SYSDIR% \manual.doc%espacios libres% .exe • %SYSDIR% \outbox.doc%espacios libres% .exe • %SYSDIR% \payment.doc%espacios libres% .exe • %SYSDIR% \photos.doc%espacios libres% .exe • %SYSDIR% \rar.doc%espacios libres% .exe • %SYSDIR% \readme.doc%espacios libres% .exe • %SYSDIR% \save.doc%espacios libres% .exe • %SYSDIR% \sysboot.doc%espacios libres% .exe • %SYSDIR% \zip.doc%espacios libres% .exe Crea los siguientes ficheros: – Crea los siguientes archivos, que incluyen copias del programa dañino: • %SYSDIR% \about.zip; %SYSDIR% \admin.zip; %SYSDIR% \archivator.zip; %SYSDIR% \archives.zip; %SYSDIR% \ataches.zip; %SYSDIR% \docs.zip; %SYSDIR% \documentation.zip; %SYSDIR% \help.zip; %SYSDIR% \inbox.zip; %SYSDIR% \manual.zip; %SYSDIR% \outbox.zip; %SYSDIR% \payment.zip; %SYSDIR% \photos.zip; %SYSDIR% \rar.zip; %SYSDIR% \readme.zip; %SYSDIR% \save.zip; %SYSDIR% \zip.zip – %SYSDIR% \wdate.dll Este es un fichero de texto que no presenta riesgo alguno e incluye el siguiente contenido: • %fecha actual% %hora actual% – %SYSDIR% \rpc32.exe Además, el fichero es ejecutado después de haber sido creado. Los análisis adicionales indicaron que este fichero es también viral. Detectado como: Worm/Bagz.D.1 – %SYSDIR% \run32.exe Los análisis adicionales indicaron que este fichero es también viral. Detectado como: Worm/Bagz.D.2 – %SYSDIR% \ipdb.dll Registro Añade las siguientes claves al registro: – [HKLM\SYSTEM\CurrentControlSet\Services\RPC32] • "Type"=dword:00000120 • "Start"=dword:00000002 • "ErrorControl"=dword:00000000 • "ImagePath"=%SYSDIR% \rpc32.exe • "DisplayName"="Network Explorer" • "ObjectName"="LocalSystem" • "Description"="Starts and configures accessibility tools from one window " – [HKLM\SYSTEM\CurrentControlSet\Services\RPC32\Security] • "Security"=%valores hex% – [HKLM\SYSTEM\CurrentControlSet\Services\RPC32\Enum] • "0"="Root\\LEGACY_RPC32\\0000" • "Count"=dword:00000001 • "NextInstance"=dword:00000001 Correo electrónico Incluye un motor SMTP integrado para enviar mensajes. Establecerá una conexión con el servidor de destinación. Las características se describen a continuación: De: La dirección del remitente es falsa. Para: – Direcciones de correo encontradas en ficheros específicos del sistema. El diseño de los mensajes de correo: Asunto: ASAP Cuerpo del mensaje: • Hi Did you get the previous document I attached for you? I resent it in this email just in case, because I really need you to check it out asap. Best Regards Asunto: please responce Cuerpo del mensaje: • Hi I made a mistake and forgot to click attach on the previous email I sent you. Please give me your opinion on this opportunity when you get a chance. Best Regards Asunto: Read this Cuerpo del mensaje: • Hi I was supposed to send you this document yesterday. Sorry for the delay, please forward this to your family if possible. It contains important info for both of you. Asunto: urgent Cuerpo del mensaje: • Hi Sorry, I forgot to send an important document to you in that last email. I had an important phone call. Please checkout attached doc file when you have a moment. Best Regards Asunto: toxic Cuerpo del mensaje: • Hi I was in a rush and I forgot to attach an important document. Please see attached doc file. Best Regards, Asunto: contract Cuerpo del mensaje: • Sorry to bother you, but I am having a problem receiving your emails. I am responding to your last email in the attached file. Please get back to me if there is any problem reading the attachment. Asunto: Money Cuerpo del mensaje: • I am responding to your last email in the attached file. I had a delivery problem with your inbox, so maybe you'll receive this now. Asunto: office Cuerpo del mensaje: • Can you please check out the email I have attached? For some reason, I received only part of your last several emails. I want to make sure that there are no problems with either of our accounts. Asunto: Have a nice day Cuerpo del mensaje: • This email is being sent as attachment because it was previously blocked by your email filters. Please view the attachment and respond. Thanks Asunto: Hello Cuerpo del mensaje: • I resent this email as attachment because it was previously blocked by your email filters. Please read the attachment and respond. Thanks Asunto: Russian's Cuerpo del mensaje: • I apologize, but I need you to verify that I have the correct contact info for you. My system crashed last weekend and I lost most of my friends and work contacts. Please check the attached (.pdf) and please let me know if your info is current. Asunto: Amirecans Cuerpo del mensaje: • My last email to you was returned. The reason is that I am not currently added to your "allowed" contact list. Please add my updated contact info provided in the attached (.pdf) file so I can send you emails in the future. Sincerely Asunto: attachments Cuerpo del mensaje: • I have updated my email address See the (.pdf) file attached and please respond if you have any questions. Asunto: attach Cuerpo del mensaje: • We have made recent updates to our database. Please verify your mailing address on file is correct. We have attached a (.pdf) sheet for you to use for your response. Asunto: waiting Cuerpo del mensaje: • Hello Our contact information has changed. See the attached (.pdf) sheet for details. Sincerely, Asunto: best regards Cuerpo del mensaje: • ***URGENT: SERVICE SHUTDOWN NOTICE*** Due to your failure to comply with our email Rules and Regulations, your email account has been temporarily suspended for 24 hours unless we are contacted regarding this situation. You must read the attached document for further instructions. Failure to comply will result in termination of your account. Regards, Net Operator ***URGENT: SERVICE SHUTDOWN NOTICE*** Asunto: Administrator Cuerpo del mensaje: • ***ATTENTION: YOUR EMAIL IS NOT BEING DELIVERED!*** , You are currently unable to send emails. This may be a billing issue. Please call the billing center. The for the billing office is located in the attached contact list for your convenience. ***ATTENTION: YOUR EMAIL IS NOT BEING DELIVERED!*** Asunto: Warning Cuerpo del mensaje: • ***YOUR MESSAGE HAS BEEN RECOGNIZED AS SPAM*** Hello, The previous email you sent has been recognized as spam. This means your email was not delivered to your friend or client. You must open the attached file to receive more information. ***YOUR MESSAGE HAS BEEN RECOGNIZED AS SPAM*** Asunto: text Cuerpo del mensaje: • Hello, What version of windows you are using? This last document I received from you came out weird. Please see the attached word file and resend the file to me. Many thanks, User Asunto: Vasia Cuerpo del mensaje: • Hello, My PC crashed while I was sending that last email. I have re-attached the document of yours that I discovered. Please read attached document and respond ASAP. Sincerely, User Asunto: re: Andrey Cuerpo del mensaje: • Hello, Your email was sent in an INVALID format. To verify this email was sent from you, simply open the attached email (.eml) file and click yes in the sender options box. Thank You, User Asunto: re: please Cuerpo del mensaje: • Hello, Your email was received. YOUR REPLY IS URGENT! Please view the attached text file for instructions. Regards, User Asunto: re: order Cuerpo del mensaje: • Hello, I was in a hurry and I forgot to attach an important document. Please see attached. Best Regards, User Asunto: Allert! Cuerpo del mensaje: • Hello, I resent this email as attachment because it was previously blocked by your email filters. Please read the attachment and respond. Thanks,User Asunto: Att Cuerpo del mensaje: • Hello, Sorry, I forgot to attach the new contact information. Please view the attached (.pdf) contact sheet. Sincerely, User Asunto: Uno de los siguientes: • Administrator; Allert!; Amirecans; Att; attach; attachments; best regards; contract; Have a nice day; Hello; Hi; Money; office; please responce; re: Andrey; re: order; re: please; Read this; Russian's; text; toxic; urgent; Vasia; waiting; Warning Archivo adjunto: El nombre del fichero adjunto es uno de los siguientes: • about.zip; admin.zip; archivator.zip; archives.zip; ataches.zip; docs.zip; documentation.zip; help.zip; inbox.zip; manual.zip; outbox.zip; payment.zip; photos.zip; rar.zip; readme.zip; save.zip; zip.zip; about.doc%espacios libres% .exe; admin.doc%espacios libres% .exe; archivator.doc%espacios libres% .exe; archives.doc%espacios libres% .exe; ataches.doc%espacios libres% .exe; docs.doc%espacios libres% .exe; documentation.doc%espacios libres% .exe; help.doc%espacios libres% .exe; inbox.doc%espacios libres% .exe; manual.doc%espacios libres% .exe; outbox.doc%espacios libres% .exe; payment.doc%espacios libres% .exe; photos.doc%espacios libres% .exe; rar.doc%espacios libres% .exe; readme.doc%espacios libres% .exe; save.doc%espacios libres% .exe; zip.doc%espacios libres% .exe El archivo adjunto es una copia del propio programa malicioso. El mensaje de correo puede tener una de las siguientes formas: Envio de mensajes Busca direcciones: Busca direcciones de correo en los siguientes ficheros: • .tbb • .tbi • .dbx • .htm • .txt Evita las direcciones: No envía mensajes de correo a las direcciones que incluyen las siguientes series de caracteres: • @avp; @foo; @iana; @messagelab; @microsoft; abuse; admin; administrator@; all@; anyone@; bsd; bugs@; cafee; certific; certs@; contact@; contract@; feste; free-av; f-secur; gold-; gold-certs@; google; help@; hostmaster@; icrosoft; info@; kasp; linux; listserv; local; netadmin@; news; nobody@; noone@; noreply; ntivi; oocies; panda; pgp; postmaster@; rating@; root@; samples; sopho; spam; support; support@; unix; update; webmaster@; winrar; winzip Ficheros host El fichero host es modificado de la siguiente manera: – En este caso, las entradas existentes serán eliminadas. – El acceso a los siguientes dominios está bloqueado: • ad.doubleclick.net; ad.fastclick.net; ads.fastclick.net; ar.atwola.com; atdmt.com; avp.ch; avp.com; avp.ru; awaps.net; banner.fastclick.net; banners.fastclick.net; ca.com; click.atdmt.com; clicks.atdmt.com; dispatch.mcafee.com; download.mcafee.com; download.microsoft.com; downloads.microsoft.com; engine.awaps.net; fastclick.net; f-secure.com; ftp.f-secure.com; ftp.sophos.com; go.microsoft.com; liveupdate.symantec.com; mast.mcafee.com; mcafee.com; media.fastclick.net; msdn.microsoft.com; my-etrust.com; nai.com; networkassociates.com; office.microsoft.com; phx.corporate-ir.net; secure.nai.com; securityresponse.symantec.com; service1.symantec.com; sophos.com; spd.atdmt.com; support.microsoft.com; symantec.com; update.symantec.com; updates.symantec.com; us.mcafee.com; vil.nai.com; viruslist.ru; windowsupdate.microsoft.com; www.avp.ch; www.avp.com; www.avp.ru; www.awaps.net; www.ca.com; www.fastclick.net; www.f-secure.com; www.kaspersky.ru; www.mcafee.com; www.my-etrust.com; www.nai.com; www.networkassociates.com; www.sophos.com; www.symantec.com; www.trendmicro.com; www.viruslist.ru; www3.ca.com El fichero host modificado se verá así: Datos del fichero Lenguaje de programación: El programa de malware ha sido escrito en MS Visual C++. Programa de compresión de ejecutables: Para agravar la detección y reducir el tamaño del fichero, emplea el siguiente programa de compresión de ejecutables: • UPX
Descripción insertada por Andrei Ivanes el lunes 7 de agosto de 2006 Descripción actualizada por Andrei Ivanes el lunes 7 de agosto de 2006
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