w32/bagle.j
w32.beagle.j@mm , w32/bagle.j@mm
tipo: gusano
tama?o: 12,288 bytes
origen: internet
destructivo: si en la calle (in the wild): si detección y eliminación: the hacker 5.6 al 02/03/2004
w32/bagle.j es un gusano residente en memoria, se difunde a trav?s de envio masivos de e-mails y a trav?s de la red de intercambio de archivos kazaa e imesh. busca direcciones de e-mail dentro de todos los archivos que tengan las siguientes extensiones .txt, .wab, .msg, .htm, .xml, .dbx, .mdx, .eml, .nch, .mmf, .ods, .cfg, .asp, .php, .pl, .adb, .tbb, .sht , .uin, y .cgi , se env?a a si mismo utilizando su propio motor smtp. ignora direcciones de e-mail que esten conformadas por las siguientes cadenas de texto:
@hotmail.com
@msn.com
@microsoft
@avp.
noreply
local
root@
postmaster@
caracteristicas del mensaje de e-mail:
de: [alguno de los siguientes]
management@<domin io del destinatario> administration@<domin io del destinatario> staff@<domin io del destinatario> noreply@<domin io del destinatario> support@<domin io del destinatario> asunto: [ alguno de los siguientes]
e-mail account disabling warning. e-mail account security warning. email account utilization warning. important notify about your e-mail account. notify about using the e-mail account. notify about your e-mail account utilization. warning about your e-mail account. cuerpo: [esta compuesto por 6 partes, que pueden ser alguno de los siguientes:]
parte 1:
dear user of [dominio del remitente] mailing system, dear user of [dominio del remitente] gateway e-mail server, dear user of [dominio del remitente], dear user of e-mail server [dominio del remitente], dear user, the management of [dominio del remitente] mailing system wants to let you know that, hello user of [dominio del remitente] e-mail server, parte 2:
your e-mail account has been temporary disabled because of unauthorized access.
-----------
our main mailing server will be temporary unavaible for next two days,
to continue receiving mail in these days you have to configure our free
auto-forwarding service.
-----------
your e-mail account will be disabled because of improper using in next
three days, if you are still wishing to use it, please, resign your
account information.
-----------
we warn you about some attacks on your e-mail account. your computer may
contain viruses, in order to keep your computer and e-mail account safe,
please, follow the instructions.
-----------
our antivirus software has detected a large ammount of viruses outgoing
from your email account, you may use our free anti-virus tool to clean up
your computer software.
----------
some of our clients complained about the spam (negative e-mail content)
outgoing from your e-mail account. probably, you have been infected by
a proxy-relay trojan server. in order to keep your computer safe,
follow the instructions.
---------
parte 3:
for more information see the attached file. further details can be obtained from attached file. advanced details can be found in attached file. for details see the attach. for details see the attached file. for further details see the attach. please, read the attach for further details. pay attention on attached file. parte 4:
the <domain> team http://www.<domain> parte 5:
the management, sincerely, best wishes, have a good day, cheers, kind regards, parte 6:
for security reasons attached file is password protected. the password is <5 n?meros aleatorios>. for security purposes the attached file is password protected. password is <5 n?meros aleatorios>. attached file protected with the password for security reasons. password is <5 n?meros aleatorios>. in order to read the attach you have to use the following password: <5 n?meros aleatorios>. archivo adjunto: [alguno de los siguientes] con extensi?n .zip o .pif
attach information readme document info textdocument textfile moreinfo message ------------------------------
cuando el gusano se ejecuta se copia a si mismo como:
system \irun4.exe
system \irun4.exeopen
nota:
- system representa la carpeta system dentro de windows (ej. c:\windows\system, c:\winnt\system32 )
adem?s modifica una entrada en el registro para poder ejecutarse en cada reinicio del sistema:
hkey_current_user\software\microsoft\windows\currentversion\run
srate.exe= system \irun4.exe
intenta enviar solicitudes http get a los siguientes sitios web a trav?s del puerto tcp 80
postertog.de www.gfotxt.net www.maiklibis.de adem?s el gusano abre el puerto tcp 2745 en el computador atacado y queda a la espera de ordenes remotas del atacante.
seguidamente el gusano intentar? finalizar todos los procesos activos de antivirus y firewalls que encuentre en el computador atacado:
atupdater.exe aupdate.exe autodown.exe autotrace.exe autoupdate.exe avltmain.exe avpupd.exe avwupd32.exe avxquar.exe cfiaudit.exe drwebupw.exe icssuppnt.exe icsupp95.exe luall.exe mcupdate.exe nupgrade.exe outpost.exe update.exe finalmente el gusano se copia a si mismo en carpetas con nombres shar del disco duro de la pc infectada y en las unidades de red (por lo general estos nombres de carpetas son usados por programas p2p como el kazaa, imesh, etc.). se copia con los siguientes nombres:
acdsee 9.exe adobe photoshop 9 full.exe ahead nero 7.exe matrix 3 revolution english subtitles.exe microsoft office 2003 crack, working!.exe microsoft office xp working crack, keygen.exe microsoft windows xp, winxp crack, working keygen.exe opera 8 new!.exe porno pics arhive, xxx.exe porno screensaver.scr porno, sex, oral, anal cool, awesome!!.exe serials.txt.exe winamp 5 pro keygen crack update.exe winamp 6 new!.exe windown longhorn beta leak.exe windows sourcecode update.doc.exe xxx hardcore images.exe