VírusWorm/Bagz.D.3
Data em que surgiu:22/10/2004
Tipo:Worm
Incluído na lista "In The Wild"Sim
Nível de danos:De médio a elevado
Nível de distribuição:Médio
Nível de risco:De baixo a médio
Ficheiro estático:Não
Tamanho:~ 155.000 Bytes
Versão VDF:6.28.00.32

 Vulgarmente Meio de transmissão:
   • E-mail


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


Sistemas Operativos:
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003


Efeitos secundários:
   • Bloqueia o acesso a determinados Web sites
   • Bloqueia o acesso a Web sites de segurança
   • Descarrega ficheiros
   • Descarrega ficheiros maliciosos
   • Utiliza o seu próprio motor de E-mail
   • Altera o registo do Windows

 Ficheiros Autocopia-se para as seguintes localizações
   • %SYSDIR%\about.doc%espaços vazios%.exe
   • %SYSDIR%\admin.doc%espaços vazios%.exe
   • %SYSDIR%\archivator.doc%espaços vazios%.exe
   • %SYSDIR%\archives.doc%espaços vazios%.exe
   • %SYSDIR%\ataches.doc%espaços vazios%.exe
   • %SYSDIR%\docs.doc%espaços vazios%.exe
   • %SYSDIR%\documentation.doc%espaços vazios%.exe
   • %SYSDIR%\help.doc%espaços vazios%.exe
   • %SYSDIR%\inbox.doc%espaços vazios%.exe
   • %SYSDIR%\manual.doc%espaços vazios%.exe
   • %SYSDIR%\outbox.doc%espaços vazios%.exe
   • %SYSDIR%\payment.doc%espaços vazios%.exe
   • %SYSDIR%\photos.doc%espaços vazios%.exe
   • %SYSDIR%\rar.doc%espaços vazios%.exe
   • %SYSDIR%\readme.doc%espaços vazios%.exe
   • %SYSDIR%\save.doc%espaços vazios%.exe
   • %SYSDIR%\sysboot.doc%espaços vazios%.exe
   • %SYSDIR%\zip.doc%espaços vazios%.exe



São criados os seguintes ficheiros:

– Cria os ficheiros seguintes que contêm uma cópia do malware:
   • %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 É um ficheiro de texto não malicioso com o seguinte conteúdo:
   • %data actual% %hora actual%

– %SYSDIR%\rpc32.exe Além disso executa-se depois de gerado. Outras investigações apontam para que este ficheiro, também, seja malware. Detectado como: Worm/Bagz.D.1

– %SYSDIR%\run32.exe Outras investigações apontam para que este ficheiro, também, seja malware. Detectado como: Worm/Bagz.D.2

– %SYSDIR%\ipdb.dll

 Registry (Registo do Windows) São adicionadas as seguintes chaves ao registo:

– [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

 E-mail Tem um motor SMTP integrado para enviar emails.É criada uma ligação directa com o servidor de destino. Tem as seguintes características:


De:
O endereço do remetente é falsificado.


Para:
– Endereços de email encontrados em determinados ficheiros no sistema.


Formato do email:



Assunto: ASAP
Body:
   • 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



Assunto: please responce
Body:
   • 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



Assunto: Read this
Body:
   • 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.



Assunto: urgent
Body:
   • 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
     



Assunto: toxic
Body:
   • Hi
     
     I was in a rush and I forgot to attach an important
     document. Please see attached doc file.
     
     Best Regards,



Assunto: contract
Body:
   • 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.



Assunto: Money
Body:
   • 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.



Assunto: office
Body:
   • 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.



Assunto: Have a nice day
Body:
   • This email is being sent as attachment because
     it was previously blocked by your email filters.
     Please view the attachment and respond.
     Thanks



Assunto: Hello
Body:
   • I resent this email as attachment because
     it was previously blocked by your email filters.
     Please read the attachment and respond.
     Thanks



Assunto: Russian's
Body:
   • 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.



Assunto: Amirecans
Body:
   • 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



Assunto: attachments
Body:
   • I have updated my email address
     See the (.pdf) file attached and
     please respond if you have any questions.
     



Assunto: attach
Body:
   • 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.



Assunto: waiting
Body:
   • Hello
     
     Our contact information has changed.
     See the attached (.pdf) sheet for details.
     
     Sincerely,



Assunto: best regards
Body:
   • ***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***



Assunto: Administrator
Body:
   • ***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!***



Assunto: Warning
Body:
   • ***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***



Assunto: text
Body:
   • 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



Assunto: Vasia
Body:
   • 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



Assunto: re: Andrey
Body:
   • 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



Assunto: re: please
Body:
   • Hello,
      Your email was received.
     YOUR REPLY IS URGENT!
     Please view the attached text file for instructions.
     Regards,
     User



Assunto: re: order
Body:
   • Hello,
      I was in a hurry and I forgot to attach an important
      document. Please see attached.
      Best Regards,
     User



Assunto: Allert!
Body:
   • Hello,
      I resent this email as attachment because
      it was previously blocked by your email filters.
      Please read the attachment and respond.
     
     Thanks,User
     



Assunto: Att
Body:
   • Hello,
     Sorry, I forgot to attach the new contact information.
     Please view the attached (.pdf) contact sheet.
     Sincerely,
     User


Assunto:
Um dos seguintes:
   • 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



Atalho:
O ficheiro de atalho tem um dos seguintes nomes:
   • 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%espaços vazios%.exe; admin.doc%espaços
      vazios%.exe; archivator.doc%espaços vazios%.exe;
      archives.doc%espaços vazios%.exe; ataches.doc%espaços
      vazios%.exe; docs.doc%espaços vazios%.exe;
      documentation.doc%espaços vazios%.exe; help.doc%espaços
      vazios%.exe; inbox.doc%espaços vazios%.exe;
      manual.doc%espaços vazios%.exe; outbox.doc%espaços
      vazios%.exe; payment.doc%espaços vazios%.exe;
      photos.doc%espaços vazios%.exe; rar.doc%espaços
      vazios%.exe; readme.doc%espaços vazios%.exe;
      save.doc%espaços vazios%.exe; zip.doc%espaços
      vazios%.exe

O ficheiro de atalho é uma cópia do malware.



O email pode ser parecido com um dos seguintes:



 Mailing Pesquisa endereços:
Procura endereços de email nos seguintes ficheiros:
   • .tbb
   • .tbi
   • .dbx
   • .htm
   • .txt


Endereços evitados:
Não envia emails para endereços com os seguintes blocos de texto:
   • @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

 Hospedeiros O ficheiro hospedeiro sofre as seguintes alterações:

– Neste caso valores existentes serão alterados.

– O acesso aos seguintes domínios é 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




O ficheiro hospedeiro (alterado) terá a seguinte aparência:


 Detalhes do ficheiro Linguagem de programação:
 O programa de malware está escrito em MS Visual C++.


Empacotador de Runtime:
De forma a agravar a detecção e reduzir o tamanho do ficheiro é lançado com o seguinte empacotador de runtime:
   • UPX

Descrição enviada por Andrei Ivanes em segunda-feira, 7 de agosto de 2006
Descrição atualizada por Andrei Ivanes em segunda-feira, 7 de agosto de 2006

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