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Trojan.DownLoader29.52258

Added to the Dr.Web virus database: 2019-08-01

Virus description added:

Technical Information

To ensure autorun and distribution
Creates the following services
  • [<HKLM>\System\CurrentControlSet\Services\mgfgdpsz] 'Start' = '00000002'
  • [<HKLM>\System\CurrentControlSet\Services\mgfgdpsz] 'ImagePath' = '<SYSTEM32>\mgfgdpsz\lfheyuej.exe /d"<Full path to file>"'
  • [<HKLM>\SYSTEM\CurrentControlSet\services\mgfgdpsz] 'ImagePath' = '<SYSTEM32>\mgfgdpsz\lfheyuej.exe'
Malicious functions
Injects code into
the following system processes:
  • <SYSTEM32>\svchost.exe
Modifies file system
Creates the following files
  • %TEMP%\lfheyuej.exe
  • C:\documents and settings\localservice:.repos
Moves the following files
  • from %TEMP%\lfheyuej.exe to <SYSTEM32>\mgfgdpsz\lfheyuej.exe
Deletes itself.
Network activity
Connects to
  • 'as###.daum.net':25
  • 'ms#####p-mx2.hinet.net':25
  • 'aspmx.l.google.com':25
  • 'mx####.##il.gm0.yahoodns.net':25
  • 'mx#.##emonmail.net':25
  • 'ma##.mc-link.it':25
  • 'sm#####2.mygalbani.com':25
  • 'sm##.##cureserver.net':25
  • 'mx#.####.opal-solutions.com':25
  • 'mx.####ta.toscana.it':25
  • 'mx.###compra.com.br':25
  • 'da#####h1.secoges.com':25
  • 'fp##.mail.dk':25
  • 'i.###tagram.com':443
  • 'ho#########.olc.protection.outlook.com':25
  • 'mx###.##il.am0.yahoodns.net':25
  • 'mx##.#mig.gmx.net':25
  • 'mx#######.mail.am0.yahoodns.net':25
  • 'mx#.has.dk':25
  • 'em#.mail.ru':25
  • 'mx#.mail.ru':25
  • 'mx#.##aroutes.com':25
  • 'gmail-smtp-in.l.google.com':25
  • 'mt##.##0.yahoodns.net':25
  • 'eu#.###.#rotection.outlook.com':25
  • 'mx.##a.untd.com':25
  • 'mx#.#clink.it':25
  • '69.#1.136.5':443
  • 'ma##.##mune.meda.mi.it':25
TCP
HTTP GET requests
  • http://www.google.com/
  • http://ap#.##address.com/myip
  • http://ap#.#pify.org/
  • http://ap#.##-cy.ru:35000/
UDP
  • DNS ASK mi##########m.mail.protection.outlook.com
  • DNS ASK mx#######.mail.am0.yahoodns.net
  • DNS ASK ro##rs.com
  • DNS ASK ya###.com.mx
  • DNS ASK mx#.has.dk
  • DNS ASK ha#.dk
  • DNS ASK em#.mail.ru
  • DNS ASK md##t.com
  • DNS ASK mx#.##aroutes.com
  • DNS ASK di####ifiedcpc.com
  • DNS ASK mx.##a.untd.com
  • DNS ASK ju##.com
  • DNS ASK gm#.de
  • DNS ASK ap#.#r-cy.ru
  • DNS ASK pa##n.com
  • DNS ASK th###ruled.com
  • DNS ASK ri##o.cl
  • DNS ASK ma##.#zeronline.com
  • DNS ASK az###nline.com
  • DNS ASK ri##.net.pl
  • DNS ASK eu#.###.#rotection.outlook.com
  • DNS ASK ho##ail.fr
  • DNS ASK mx#.#omcast.net
  • DNS ASK co##ast.net
  • DNS ASK ya##o.es
  • DNS ASK as###.daum.net
  • DNS ASK mx##.#mig.gmx.net
  • DNS ASK ya##o.de
  • DNS ASK ma#l.dk
  • DNS ASK i.###tagram.com
  • DNS ASK ms#####p-mx2.hinet.net
  • DNS ASK ms#.#inet.net
  • DNS ASK ga###mini.it
  • DNS ASK mx####.##il.gm0.yahoodns.net
  • DNS ASK ao#.com
  • DNS ASK mx#.##emonmail.net
  • DNS ASK ho####yhomes.com
  • DNS ASK ma##.mc-link.it
  • DNS ASK sm#####2.mygalbani.com
  • DNS ASK mc##ink.it
  • DNS ASK la##alis.it
  • DNS ASK sm##.##cureserver.net
  • DNS ASK go##bcs.com
  • DNS ASK sp##trum.it
  • DNS ASK ho##ail.it
  • DNS ASK mx#.####.opal-solutions.com
  • DNS ASK kn#####geisking.co.uk
  • DNS ASK mx.####ta.toscana.it
  • DNS ASK us##.toscana.it
  • DNS ASK da#####h1.secoges.com
  • DNS ASK st##bla.it
  • DNS ASK mx.###compra.com.br
  • DNS ASK un####pra.com.br
  • DNS ASK fp##.mail.dk
  • DNS ASK wa###art.com
  • DNS ASK co####.meda.mi.it
  • DNS ASK mx####.##il.am0.yahoodns.net
  • DNS ASK mx#.#clink.it
  • DNS ASK si##.com
  • DNS ASK google.com
  • DNS ASK aspmx.l.google.com
  • DNS ASK ka##an.com
  • DNS ASK mx#.#anmail.net
  • DNS ASK ha##ail.net
  • DNS ASK cl######.us.messagelabs.com
  • DNS ASK bs##i.com
  • DNS ASK ho#########.olc.protection.outlook.com
  • DNS ASK ho##ail.com
  • DNS ASK vi#####br-mx.terra.com
  • DNS ASK re###.sion.com
  • DNS ASK 19#.###.#11.95.cbl.abuseat.org
  • DNS ASK 19#.###.##1.95.sbl-xbl.spamhaus.org
  • DNS ASK ma#######xcite.roc2.bluetie.com
  • DNS ASK 19#.###.#11.95.zen.spamhaus.org
  • DNS ASK ex##te.com
  • DNS ASK mx#######201.gslb.pphosted.com
  • DNS ASK ve##zon.com
  • DNS ASK 19#.###.#11.95.bl.spamcop.net
  • DNS ASK mt##.##0.yahoodns.net
  • DNS ASK ya##o.com
  • DNS ASK 19#.###.#11.95.dnsbl.sorbs.net
  • DNS ASK 19#.###.211.95.in-addr.arpa
  • DNS ASK te###.com.br
  • DNS ASK sv#.com.ph
  • DNS ASK fl##tsa.com
  • DNS ASK a.##.#ildram.net
  • DNS ASK mx###.##tispameurope.com
  • DNS ASK mc##nk.it
  • DNS ASK de##n.ph
  • DNS ASK mx#.mail.ru
  • DNS ASK ma#l.ru
  • DNS ASK wa##art.com
  • DNS ASK mx#.##taguard.no
  • DNS ASK da###uard.no
  • DNS ASK gmail-smtp-in.l.google.com
  • DNS ASK gm##l.com
  • DNS ASK no###.#ai-wetherill.com
  • DNS ASK wa####therill.com
  • DNS ASK in####d.smtp.vt.edu
  • DNS ASK vt.edu
  • DNS ASK alt1.aspmx.l.google.com
  • DNS ASK la###ge-na.com
  • DNS ASK mx#.###denast.iphmx.com
  • DNS ASK co###nast.com
  • DNS ASK mx###.##il.am0.yahoodns.net
  • DNS ASK ya##o.fr
  • DNS ASK ma####.exxonmobil.com
  • DNS ASK ex###mobil.com
  • DNS ASK mx#.#noinc.com
  • DNS ASK co##eco.com
  • DNS ASK f2#.com
  • DNS ASK ma##.##mune.meda.mi.it
  • '<DNS_SERVER>':53
Miscellaneous
Creates and executes the following
  • '<SYSTEM32>\mgfgdpsz\lfheyuej.exe' /d"<Full path to file>"
  • '<SYSTEM32>\cmd.exe' /C mkdir <SYSTEM32>\mgfgdpsz\' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /C move /Y "%TEMP%\lfheyuej.exe" <SYSTEM32>\mgfgdpsz\' (with hidden window)
  • '<SYSTEM32>\sc.exe' create mgfgdpsz binPath= "<SYSTEM32>\mgfgdpsz\lfheyuej.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"' (with hidden window)
  • '<SYSTEM32>\sc.exe' description mgfgdpsz "wifi internet conection"' (with hidden window)
  • '<SYSTEM32>\sc.exe' start mgfgdpsz' (with hidden window)
Executes the following
  • '<SYSTEM32>\cmd.exe' /C mkdir <SYSTEM32>\mgfgdpsz\
  • '<SYSTEM32>\cmd.exe' /C move /Y "%TEMP%\lfheyuej.exe" <SYSTEM32>\mgfgdpsz\
  • '<SYSTEM32>\sc.exe' create mgfgdpsz binPath= "<SYSTEM32>\mgfgdpsz\lfheyuej.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"
  • '<SYSTEM32>\sc.exe' description mgfgdpsz "wifi internet conection"
  • '<SYSTEM32>\sc.exe' start mgfgdpsz
  • '<SYSTEM32>\svchost.exe'

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

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  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

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