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Virus:TR/Bagle.GD
Date discovered:12/12/2006
Type:Worm
In the wild:Yes
Reported Infections:Medium
Distribution Potential:Medium
Damage Potential:Medium
Static file:Yes
File size:40.961 Bytes
MD5 checksum:6acfafce6ed1cf956cec6ab1e5265d0E
IVDF version:6.37.00.07 - Tuesday, December 12, 2006

 General Method of propagation:
   • Email


Aliases:
   •  Mcafee: W32/Bagle.gen
   •  Kaspersky: Email-Worm.Win32.Bagle.gt
   •  F-Secure: Email-Worm.Win32.Bagle.gt
   •  Grisoft: I-Worm/Bagle


Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003


Side effects:
   • Downloads files
   • Downloads malicious files
   • Uses its own Email engine
   • Lowers security settings
   • Registry modification


Right after execution it runs a windows application which will display the following window:


 Files It copies itself to the following locations:
   • %APPDATA%\hidn\hldrrr.exe
   • %APPDATA%\hidn\hidn.exe



It copies itself within an archive to the following location:
   • c:\temp.zip



The following file is created:

– c:\error.txt This is a non malicious text file with the following content:
   • Text decoding error.




It tries to download some files:

– The locations are the following:
   • http://ceramax.co.kr/**********
   • http://prime.gushi.org/**********
   • http://www.chapisteriadaniel.com/**********
   • http://charlesspaans.com/**********
   • http://chatsk.wz.cz/**********
   • http://www.chittychat.com/**********
   • http://checkalertusa.com/**********
   • http://cibernegocios.com.ar/**********
   • http://5050clothing.com/**********
   • http://cof666.shockonline.net/**********
   • http://comaxtechnologies.net/**********
   • http://concellodesandias.com/**********
   • http://www.cort.ru/**********
   • http://donchef.com/**********
   • http://www.crfj.com/**********
   • http://kremz.ru/**********
   • http://dev.jintek.com/**********
   • http://foxvcoin.com/**********
   • http://uwua132.org/**********
   • http://v-v-kopretiny.ic.cz/**********
   • http://erich-kaestner-schule-donaueschingen.de/**********
   • http://vanvakfi.com/**********
   • http://axelero.hu/**********
   • http://kisalfold.com/**********
   • http://vega-sps.com/**********
   • http://vidus.ru/**********
   • http://viralstrategies.com/**********
   • http://svatba.viskot.cz/**********
   • http://Vivamodelhobby.com/**********
   • http://vkinfotech.com/**********
   • http://vytukas.com/**********
   • http://waisenhaus-kenya.ch/**********
   • http://watsrisuphan.org/**********
   • http://www.ag.ohio-state.edu/**********
   • http://wbecanada.com/**********
   • http://calamarco.com/**********
   • http://vproinc.com/**********
   • http://grupdogus.de/**********
   • http://knickimbit.de/**********
   • http://dogoodesign.ch/**********
   • http://systemforex.de/**********
   • http://zebrachina.net/**********
   • http://www.walsch.de/**********
   • http://hotchillishop.de/**********
   • http://innovation.ojom.net/**********
   • http://massgroup.de/**********
   • http://web-comp.hu/**********
   • http://webfull.com/**********
   • http://welvo.com/**********
   • http://www.ag.ohio-state.edu/**********
   • http://poliklinika-vajnorska.sk/**********
   • http://wvpilots.org/**********
   • http://www.kersten.de/**********
   • http://www.kljbwadersloh.de/**********
   • http://www.voov.de/**********
   • http://www.wchat.cz/**********
   • http://www.wg-aufbau-bautzen.de/**********
   • http://www.wzhuate.com/**********
   • http://zsnabreznaknm.sk/**********
   • http://xotravel.ru/**********
   • http://ilikesimple.com/**********
   • http://yeniguntugla.com/**********
It is saved on the local hard drive under: %SYSDIR%\re_file.exe Furthermore this file gets executed after it was fully downloaded. Further investigation pointed out that this file is malware, too. Detected as: TR/Bagle.Gen.B


– The locations are the following:
   • http://www.titanmotors.com/images/1/**********
   • http://veranmaisala.com/1/**********
   • http://wklight.nazwa.pl/1/**********
   • http://yongsan24.co.kr/1/**********
   • http://accesible.cl/1/**********
   • http://hotelesalba.com/1/**********
   • http://amdlady.com/1/**********
   • http://inca.dnetsolution.net/1/**********
   • http://www.auraura.com/1/**********
   • http://avataresgratis.com/1/**********
   • http://beyoglu.com.tr/1/**********
   • http://brandshock.com/1/**********
   • http://www.buydigital.co.kr/1/**********
   • http://camaramafra.sc.gov.br/1/**********
   • http://camposequipamentos.com.br/1/**********
   • http://cbradio.sos.pl/1/**********
   • http://c-d-c.com.au/1/**********
   • http://www.klanpl.com/1/**********
   • http://coparefrescos.stantonstreetgroup.com/1/**********
   • http://creainspire.com/1/**********
   • http://desenjoi.com.br/1/**********
   • http://www.inprofile.gr/1/**********
   • http://www.diem.cl/1/**********
   • http://www.discotecapuzzle.com/1/**********
It is saved on the local hard drive under: %WINDIR%\elist.xpt

 Registry The following registry key is added in order to run the process after reboot:

– [HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • drv_st_key = %APPDATA%\hidn\hidn2.exe



The following registry key including all values and subkeys is removed:
   • [HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot]



The following registry key is added:

– [HKCU\Software\FirstRun]
   • FirstRun = 1



The following registry key is changed:

Deactivate Windows Firewall:
– [HKLM\SYSTEM\CurrentControlSet\Services\wuauserv]
   Old value:
   • Start = %user defined settings%
   New value:
   • Start = 4

 Email It contains an integrated SMTP engine in order to send emails. A direct connection with the destination server will be established. The characteristics are described in the following:


From:
The sender address is spoofed.
Gathered addresses from the internet. Please do not assume that it was the senders intention to send this email to you. He might not know about his infection or might not even be infected at all. Furthermore it is possible that you will receive bounced emails that tell you that you are infected. This might also not be the case.


To:
– Email addresses found in specific files on the system.
– Gathered addresses from the internet.


Subject:
One of the following:
   • pric %current date%
   • price_ %current date%
   • price_%current date%
   • price-%current date%
   • price %current date%



Body:
–  The body is empty.


Attachment:
The filename of the attachment is one of the following:
   • price%current date%.zip
   • new_price%current date%.zip
   • latest_price%current date%.zip

The attachment is an archive containing a copy of the malware itself.



The email looks like the following:


 Mailing Search addresses:
It searches the following files for email addresses:
   • .wab; .txt; .msg; .htm; .shtm; .stm; .xml; .dbx; .mbx; .mdx; .eml;
      .nch; .mmf; .ods; .cfg; .asp; .php; .pl; .wsh; .adb; .tbb; .sht; .xls;
      .oft; .uin; .cgi; .mht; .dhtm; .jsp


Gather addresses:
It gathers addresses by contacting the following websites:
   • http://www.titanmotors.com/images/1/**********
   • http://veranmaisala.com/1/**********
   • http://wklight.nazwa.pl/1/**********
   • http://yongsan24.co.kr/1/**********
   • http://accesible.cl/1/**********
   • http://hotelesalba.com/1/**********
   • http://amdlady.com/1/**********
   • http://inca.dnetsolution.net/1/**********
   • http://www.auraura.com/1/**********
   • http://avataresgratis.com/1/**********
   • http://beyoglu.com.tr/1/**********
   • http://brandshock.com/1/**********
   • http://www.buydigital.co.kr/1/**********
   • http://camaramafra.sc.gov.br/1/**********
   • http://camposequipamentos.com.br/1/**********
   • http://cbradio.sos.pl/1/**********
   • http://c-d-c.com.au/1/**********
   • http://www.klanpl.com/1/**********
   • http://coparefrescos.stantonstreetgroup.com/1/**********
   • http://creainspire.com/1/**********
   • http://desenjoi.com.br/1/**********
   • http://www.inprofile.gr/1/**********
   • http://www.diem.cl/1/**********
   • http://www.discotecapuzzle.com/1/**********


Avoid addresses:
It does not send emails to addresses containing one of the following strings:
   • rating@; f-secur; news; update; anyone@; bugs@; contract@; feste;
      gold-certs@; help@; info@; nobody@; noone@; kasp; admin; icrosoft;
      support; ntivi; unix; bsd; linux; listserv; certific; sopho; @foo;
      @iana; free-av; @messagelab; winzip; google; winrar; samples; abuse;
      panda; cafee; spam; pgp; @avp.; noreply; local; root@; postmaster@

 File details Programming language:
 The malware program was written in MS Visual C++.


Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

Description inserted by Andrei Gherman on Friday, October 5, 2007
Description updated by Andrei Gherman on Friday, October 5, 2007

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