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Trojan.DownLoader29.51458

Added to the Dr.Web virus database: 2019-07-28

Virus description added:

Technical Information

To ensure autorun and distribution
Creates the following services
  • [<HKLM>\System\CurrentControlSet\Services\cgxuhykr] 'Start' = '00000002'
  • [<HKLM>\System\CurrentControlSet\Services\cgxuhykr] 'ImagePath' = '<SYSTEM32>\cgxuhykr\uhvyaayl.exe /d"<Full path to file>"'
  • [<HKLM>\SYSTEM\CurrentControlSet\services\cgxuhykr] 'ImagePath' = '<SYSTEM32>\cgxuhykr\uhvyaayl.exe'
Malicious functions
Injects code into
the following system processes:
  • <SYSTEM32>\svchost.exe
Modifies file system
Creates the following files
  • %TEMP%\uhvyaayl.exe
  • C:\documents and settings\localservice:.repos
Moves the following files
  • from %TEMP%\uhvyaayl.exe to <SYSTEM32>\cgxuhykr\uhvyaayl.exe
Deletes itself.
Network activity
Connects to
  • 'mt##.##0.yahoodns.net':25
  • 'fr#####.#inamail.sina.com.cn':25
  • 'mx###.##il.am0.yahoodns.net':25
  • 'mx.#len.pl':25
  • 'eu#.###.#rotection.outlook.com':25
  • 'mx##.#spgateway.de':25
  • 'gmail-smtp-in.l.google.com':25
  • 'alt1.aspmx.l.google.com':25
  • 'cl#######.us.messagelabs.com':25
  • 'mx####.##il.gm0.yahoodns.net':25
  • '69.#1.136.5':443
  • 'ma##.#ihonparker.in':25
  • 'ma###.#omune.venezia.it':25
  • 'mx#####.#ail.gm0.yahoodns.net':25
  • 'ma##.#egister.it':25
  • 'mx.##ra.co.nz':25
  • 'mx#######402.gslb.pphosted.com':25
  • 'sm####n.libero.it':25
  • 'al######x-vip1.prodigy.net':25
  • 'ne##lix.com':443
  • 'mx.##lus.net':25
  • 'mx##.#andomain.dk':25
  • 'mx.yandex.ru':25
  • 'mx#.#anmail.net':25
  • 'sm##.#ail.swan.sk':25
  • 'ma##.##oolfotografie.nl':25
  • 'ho####decharme.nl':25
  • 'al######x-vip2.prodigy.net':25
  • 'mx#.##.correio.biz':25
  • 'd1######.#ss.barracudanetworks.com':25
  • 'ma###.eircom.net':25
  • 'ma##.stsnet.it':25
  • 'cl#######k.eu.messagelabs.com':25
  • 'ms#####p-mx1.hinet.net':25
  • 'ho#########.olc.protection.outlook.com':25
  • 'mx#.mail.ru':25
  • 'aspmx.l.google.com':25
  • 'mx#.##tsolmail.net':25
  • 'ma####1.globeop.com':25
  • 'mx#.##axiscloud.com':25
  • 'mx#######701.gslb.pphosted.com':25
  • 'ma###.hostek.com':25
  • 'mx###.in-mx.com':25
  • 'as#.##flexion.net':25
  • 'ki###film.sk':443
  • 'mx.##oltoad.com':25
  • 'tu###.web2media.sk':443
  • 'sm###.9services.com':25
  • 'fo###.#oogleapis.com':443
  • 'mx.##teria.pl':25
  • 'ba#####da.airmar.com':25
  • 'ma##.#####-cover.trafficmanager.net':25
  • 'sm##.##cureserver.net':25
  • 'du###.emsergipe.com':25
  • 'et###.#ail.tiscali.it':25
  • 'fo###.gstatic.com':443
  • 'cd#.#dspirit.de':443
  • 'sp####ght.mdsnet.it':25
  • 'alt3.gmail-smtp-in.l.google.com':25
  • 'mx#####os1.burgo.com':25
  • 'dn#######edge01.email.rr.com':25
  • 'fi#######mw15.rightnowtech.com':25
  • 'ma##.###fdistributing.com':25
  • 'mx#######e01.gslb.pphosted.com':25
  • '14#.#6.108.92':483
  • 'sm####n.eutelia.it':25
  • 'ma##.##-productions.de':25
  • 'sm##.a1.net':25
TCP
HTTP GET requests
  • http://www.google.com/
UDP
  • DNS ASK mi##########m.mail.protection.outlook.com
  • DNS ASK nb##.co.nz
  • DNS ASK cl#######k.eu.messagelabs.com
  • DNS ASK il###istro.it
  • DNS ASK si##.com
  • DNS ASK fr#####.#inamail.sina.com.cn
  • DNS ASK xt##.co.nz
  • DNS ASK mx.##ra.co.nz
  • DNS ASK al#######alacerestaurant.com
  • DNS ASK ya##o.it
  • DNS ASK mx###.##il.am0.yahoodns.net
  • DNS ASK me###pectra.com
  • DNS ASK sk#.com
  • DNS ASK o2.pl
  • DNS ASK mx.#len.pl
  • DNS ASK li#e.it
  • DNS ASK ar####methods.com
  • DNS ASK fr###ier.com
  • DNS ASK ku####uch-shop.de
  • DNS ASK mx##.#spgateway.de
  • DNS ASK ya###.com.ar
  • DNS ASK 11##tri.eu
  • DNS ASK ca####zeriapiave.it
  • DNS ASK br#####hinyobject.com
  • DNS ASK ms#####p-mx1.hinet.net
  • DNS ASK gm##l.com
  • DNS ASK ms#.#inet.net
  • DNS ASK re###iving.com
  • DNS ASK sp####ght.mdsnet.it
  • DNS ASK ho###oop.com
  • DNS ASK ho##law.com
  • DNS ASK bu#####stribuzione.com
  • DNS ASK mx#####os1.burgo.com
  • DNS ASK ha##ail.net
  • DNS ASK mx#.#anmail.net
  • DNS ASK jz####ductions.de
  • DNS ASK ma##.##-productions.de
  • DNS ASK go####il.etsu.edu
  • DNS ASK gu####novation.com
  • DNS ASK ag##e.com
  • DNS ASK ke###ichat.com
  • DNS ASK gi###inc.com
  • DNS ASK ch#######hopping-central.com
  • DNS ASK ma####.custhelp.com
  • DNS ASK fi#######mw15.rightnowtech.com
  • DNS ASK gu#####tributing.com
  • DNS ASK ma##.###fdistributing.com
  • DNS ASK fa####dollar.com
  • DNS ASK mx#######e01.gslb.pphosted.com
  • DNS ASK fr###omland.it
  • DNS ASK sm####n.eutelia.it
  • DNS ASK ma##.#####-cover.trafficmanager.net
  • DNS ASK al######x-vip2.prodigy.net
  • DNS ASK sm##.a1.net
  • DNS ASK alt1.aspmx.l.google.com
  • DNS ASK sg####otografie.nl
  • DNS ASK ma##.##oolfotografie.nl
  • DNS ASK wr####udents.org
  • DNS ASK go###email.com
  • DNS ASK alt3.gmail-smtp-in.l.google.com
  • DNS ASK ad##an.edu
  • DNS ASK bi##ys.it
  • DNS ASK ya##o.co.nz
  • DNS ASK eu##web.sk
  • DNS ASK sm##.#ail.swan.sk
  • DNS ASK yandex.ru
  • DNS ASK mx.yandex.ru
  • DNS ASK sh##ita.dk
  • DNS ASK mx##.#andomain.dk
  • DNS ASK te##s.net
  • DNS ASK mx.##lus.net
  • DNS ASK ne##lix.com
  • DNS ASK be###outh.net
  • DNS ASK al######x-vip1.prodigy.net
  • DNS ASK tu#.by
  • DNS ASK ad###hia.net
  • DNS ASK dn#######edge01.email.rr.com
  • DNS ASK a1.net
  • DNS ASK ho####decharme.nl
  • DNS ASK ma##.mdsnet.it
  • DNS ASK fo#####ohaus-mohr.de
  • DNS ASK sb###obal.net
  • DNS ASK ma###as.cmpc.cl
  • DNS ASK mo#####e.wellsfargo.com
  • DNS ASK cl#######.us.messagelabs.com
  • DNS ASK ve##zon.net
  • DNS ASK mx####.##il.gm0.yahoodns.net
  • DNS ASK ni###parker.in
  • DNS ASK ma##.#ihonparker.in
  • DNS ASK co####.venezia.it
  • DNS ASK ma###.#omune.venezia.it
  • DNS ASK ya###.com.sg
  • DNS ASK mx#####.#ail.gm0.yahoodns.net
  • DNS ASK ty##n.com
  • DNS ASK mx#######402.gslb.pphosted.com
  • DNS ASK li##ro.it
  • DNS ASK sm####n.libero.it
  • DNS ASK st##et.it
  • DNS ASK ma##.stsnet.it
  • DNS ASK ei##om.net
  • DNS ASK ma###.eircom.net
  • DNS ASK fo###rcity.org
  • DNS ASK d1######.#ss.barracudanetworks.com
  • DNS ASK ig.#om.br
  • DNS ASK mx#.##.correio.biz
  • DNS ASK gmail-smtp-in.l.google.com
  • DNS ASK mu####overseas.com
  • DNS ASK cd#.#dspirit.de
  • DNS ASK ma###.hostek.com
  • DNS ASK le###iflock.it
  • DNS ASK mx.###atiflock.it
  • DNS ASK ya##o.com
  • DNS ASK mt##.##0.yahoodns.net
  • DNS ASK ae##n.nl
  • DNS ASK mx#######f01.gslb.pphosted.com
  • DNS ASK le##line.it
  • DNS ASK mx###.in-mx.net
  • DNS ASK el##vier.nl
  • DNS ASK el#########.mail.protection.outlook.com
  • DNS ASK xp#######am12.itap.purdue.edu
  • DNS ASK le##rne.com
  • DNS ASK le###matic.it
  • DNS ASK aspmx.l.google.com
  • DNS ASK in##ria.pl
  • DNS ASK mx.##teria.pl
  • DNS ASK wa##doo.nl
  • DNS ASK le###rans.it
  • DNS ASK le###unisi.it
  • DNS ASK ne#####ndse-opera.nl
  • DNS ASK mx#####1.fortytwo.nl
  • DNS ASK le####riafghani.it
  • DNS ASK le####clubhotel.it
  • DNS ASK pu##ue.edu
  • DNS ASK mx#.mail.ru
  • DNS ASK in##x.ru
  • DNS ASK 19#.###.211.95.in-addr.arpa
  • DNS ASK 19#.###.#11.95.dnsbl.sorbs.net
  • DNS ASK le####inazioni.it
  • DNS ASK ma##.#egister.it
  • DNS ASK 19#.###.#11.95.bl.spamcop.net
  • DNS ASK 19#.###.#11.95.zen.spamhaus.org
  • DNS ASK ms#.edu
  • DNS ASK 19#.###.##1.95.sbl-xbl.spamhaus.org
  • DNS ASK mx#######801.gslb.pphosted.com
  • DNS ASK 19#.###.#11.95.cbl.abuseat.org
  • DNS ASK le####eimmobili.it
  • DNS ASK ma##.##vanteimmobili.it
  • DNS ASK fs#.edu
  • DNS ASK mx#######503.gslb.pphosted.com
  • DNS ASK le###chimica.it
  • DNS ASK ma##.##vanchimica.it
  • DNS ASK tr###.ulm.edu
  • DNS ASK is##ine.it
  • DNS ASK em###.isisecure.it
  • DNS ASK pl##et.nl
  • DNS ASK ma####.kpnmail.nl
  • DNS ASK ho##ail.com
  • DNS ASK ho#########.olc.protection.outlook.com
  • DNS ASK le##iero.it
  • DNS ASK fo###.gstatic.com
  • DNS ASK li##.co.uk
  • DNS ASK du###.emsergipe.com
  • DNS ASK mx###.in-mx.com
  • DNS ASK gi####pearls.com
  • DNS ASK ja#####wnpainting.com
  • DNS ASK as#.##flexion.net
  • DNS ASK ki###film.sk
  • DNS ASK gi###echinc.com
  • DNS ASK co###oad.com
  • DNS ASK mx.##oltoad.com
  • DNS ASK tu###.web2media.sk
  • DNS ASK qq##.com
  • DNS ASK km#.com
  • DNS ASK gr####-perrotin.com
  • DNS ASK sm###.9services.com
  • DNS ASK ma##ort.com
  • DNS ASK fo###.#oogleapis.com
  • DNS ASK ba#####da.airmar.com
  • DNS ASK pr#####herapeutics.com
  • DNS ASK pr####-presse.com
  • DNS ASK ib##l.com
  • DNS ASK sm##.##cureserver.net
  • DNS ASK li#t.ru
  • DNS ASK jp###abe.com
  • DNS ASK em###gipe.com
  • DNS ASK oa##.com
  • DNS ASK pi##te.ca
  • DNS ASK le##or.it
  • DNS ASK mx#######701.gslb.pphosted.com
  • DNS ASK ti###linet.it
  • DNS ASK et###.#ail.tiscali.it
  • DNS ASK in##co.net
  • DNS ASK ma####.lanaco.com
  • DNS ASK ho##ail.de
  • DNS ASK eu#.###.#rotection.outlook.com
  • DNS ASK ne##om.ca
  • DNS ASK sr##.com
  • DNS ASK ma#l.ru
  • DNS ASK dh#.nl
  • DNS ASK ca####onsult.com
  • DNS ASK cl######.eu.messagelabs.com
  • DNS ASK ca######.#om.mx1.greymail.rcimx.net
  • DNS ASK google.com
  • DNS ASK gl####star.com.ni
  • DNS ASK gl####star.com.tr
  • DNS ASK ou###rmland.com
  • DNS ASK mx#.##tsolmail.net
  • DNS ASK gl##eop.com
  • DNS ASK ma####1.globeop.com
  • DNS ASK cc##pa.com
  • DNS ASK mx#.##axiscloud.com
  • DNS ASK sf###onicle.com
  • DNS ASK ca###omm.com
  • DNS ASK mx#.#irate.ca
  • '<DNS_SERVER>':53
Miscellaneous
Creates and executes the following
  • '<SYSTEM32>\cgxuhykr\uhvyaayl.exe' /d"<Full path to file>"
  • '<SYSTEM32>\cmd.exe' /C mkdir <SYSTEM32>\cgxuhykr\' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /C move /Y "%TEMP%\uhvyaayl.exe" <SYSTEM32>\cgxuhykr\' (with hidden window)
  • '<SYSTEM32>\sc.exe' create cgxuhykr binPath= "<SYSTEM32>\cgxuhykr\uhvyaayl.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"' (with hidden window)
  • '<SYSTEM32>\sc.exe' description cgxuhykr "wifi internet conection"' (with hidden window)
  • '<SYSTEM32>\sc.exe' start cgxuhykr' (with hidden window)
Executes the following
  • '<SYSTEM32>\cmd.exe' /C mkdir <SYSTEM32>\cgxuhykr\
  • '<SYSTEM32>\cmd.exe' /C move /Y "%TEMP%\uhvyaayl.exe" <SYSTEM32>\cgxuhykr\
  • '<SYSTEM32>\sc.exe' create cgxuhykr binPath= "<SYSTEM32>\cgxuhykr\uhvyaayl.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"
  • '<SYSTEM32>\sc.exe' description cgxuhykr "wifi internet conection"
  • '<SYSTEM32>\sc.exe' start cgxuhykr
  • '<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.

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