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BackDoor.Bulknet.1048

Added to the Dr.Web virus database: 2013-07-23

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'gipychagcasp' = '%HOMEPATH%\gipychagcasp.exe'
Modifies file system :
Creates the following files:
  • %APPDATA%\Microsoft\Protect\S-1-5-21-2052111302-484763869-725345543-1003\Preferred
  • %APPDATA%\Microsoft\Crypto\RSA\S-1-5-21-2052111302-484763869-725345543-1003\ec702f375e1b12d218f67ab9ef19ca23_23ef5514-3059-436f-a4a7-4cefaab20eb1
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\merck[1].htm
  • %APPDATA%\Microsoft\Protect\S-1-5-21-2052111302-484763869-725345543-1003\4c458dc3-6380-41a7-9009-e409170c25af
  • %HOMEPATH%\gipychagcasp.exe
  • %APPDATA%\Microsoft\Protect\S-1-5-21-2052111302-484763869-725345543-1003\09fd881e-862b-48cd-a90a-4d582c9075fd
Network activity:
Connects to:
  • 'al###-dsl.de':25
  • 'mc####onhboc.com':25
  • 'me##k.com':80
  • 'nf#.com':25
  • 'ho##ail.com':25
  • 'mv##le.edu':25
  • 'lc##pa.com':25
  • 'ju##i.dk':25
  • 'ga####inriver.net':25
TCP:
HTTP POST requests:
  • me##k.com/
UDP:
  • DNS ASK de###bosf.kz
  • DNS ASK as##.com
  • DNS ASK ba##ctor.us
  • DNS ASK ao#.de
  • DNS ASK vo###one.com
  • DNS ASK em###msn.com
  • DNS ASK ra##tar.com
  • DNS ASK me##om.com
  • DNS ASK mu###asosr.kz
  • DNS ASK ch###ensys.com
  • DNS ASK ca###line.org
  • DNS ASK ex##te.com
  • DNS ASK me##o.net
  • DNS ASK ke###vuzloda.kz
  • DNS ASK wi###tream.net
  • DNS ASK bi##s.com
  • DNS ASK gu###muvo.kz
  • DNS ASK ca###n.com.mx
  • DNS ASK po#####nmitsubishi.com
  • DNS ASK ne###zomih.kz
  • DNS ASK ca###.gov.br
  • DNS ASK ma###rent.com
  • DNS ASK nc###e.net.au
  • DNS ASK be####fuldecay.com
  • DNS ASK ca###ina.com
  • DNS ASK da##t.com
  • DNS ASK vi###t.com.mx
  • DNS ASK te##her.com
  • DNS ASK zd###mail.com
  • DNS ASK ei##om.net
  • DNS ASK sp##y.se
  • DNS ASK li##ro.it
  • DNS ASK gr##.com
  • DNS ASK xi###ladgusi.kz
  • DNS ASK yo##ube.com
  • DNS ASK na##r.com
  • DNS ASK li##one.net
  • DNS ASK ma##.#arthlink.net
  • DNS ASK jm#.edu
  • DNS ASK ga###peed.com
  • DNS ASK je###tmoharo.kz
  • DNS ASK ax##ero.hu
  • DNS ASK cr###paths.net
  • DNS ASK bl###planet.com
  • DNS ASK hu#.com
  • DNS ASK ya###.com.cn
  • DNS ASK mw##.co.za
  • DNS ASK wo###-net.co.nz
  • DNS ASK ms#.edu
  • DNS ASK ol##iss.edu
  • DNS ASK re####onsearch.com
  • DNS ASK sp###tmail.com
  • DNS ASK ao#.com
  • DNS ASK va###net.com
  • DNS ASK ac####endlease.com
  • DNS ASK ca####-systems.com
  • DNS ASK bo###efixim.kz
  • DNS ASK mo###ainmax.net
  • DNS ASK sh###dvare.com
  • DNS ASK ly##hta.org
  • DNS ASK cb###ted.com
  • DNS ASK ag##ent.com
  • DNS ASK co##ast.net
  • DNS ASK so##h.net
  • DNS ASK mi####ryofsound.net
  • DNS ASK ho####do-this.com
  • DNS ASK ca###ail.com
  • DNS ASK mi##47.com
  • DNS ASK so#.dk
  • DNS ASK ma##id.com
  • DNS ASK ba####egifford.com
  • DNS ASK pt.lu
  • DNS ASK ju##i.dk
  • DNS ASK nf#.com
  • DNS ASK mc####onhboc.com
  • DNS ASK ho##ail.com
  • DNS ASK lc##pa.com
  • DNS ASK mv##le.edu
  • DNS ASK ga####inriver.net
  • DNS ASK dr##el.edu
  • DNS ASK pg#.com
  • DNS ASK ta###bay.rr.com
  • DNS ASK va##ine.com
  • DNS ASK al###-dsl.de
  • DNS ASK me##k.com
  • DNS ASK in#.net
  • DNS ASK ew#.edu
  • DNS ASK ho##ale.com
  • DNS ASK vo#.com
  • DNS ASK rc#.com
  • DNS ASK tx##ate.edu
  • DNS ASK co###oweb.com
  • DNS ASK te##ett.com
  • DNS ASK ia.##lecom.net
  • DNS ASK my##ace.com
  • DNS ASK ti###s-net.com
  • DNS ASK va##.com
  • DNS ASK zo###own.com
  • DNS ASK nu###focibim.kz
  • DNS ASK ne###ape.net
  • DNS ASK o2.pl
  • DNS ASK bu####andbumble.com
  • DNS ASK wi###rmere.com
  • DNS ASK va####efreaks.com
  • DNS ASK up##nk.net
  • DNS ASK vu###rkuz.kz
  • DNS ASK wo####nline.co.uk
  • DNS ASK fr###burg.edu
  • DNS ASK ht##mp.net
  • DNS ASK ve##zon.net
  • DNS ASK ca###rande.com
  • DNS ASK sa####goinsider.com
  • DNS ASK sp##.com
  • DNS ASK al###ream.net
  • DNS ASK fo###dihija.kz
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'

Curing recommendations

  1. If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space.
  2. If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.
Download Dr.Web

Download by serial number

Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

Download Dr.Web

Download by serial number

  1. If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
  2. If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
    • Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
    • Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
    • Switch off your device and turn it on as normal.

Find out more about Dr.Web for Android