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Trojan.Siggen9.23264

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\ljnuthyh] 'Start' = '00000002'
  • [<HKLM>\System\CurrentControlSet\Services\ljnuthyh] 'ImagePath' = '%WINDIR%\SysWOW64\ljnuthyh\kshlywff.exe /d"<Full path to file>"'
  • [<HKLM>\SYSTEM\CurrentControlSet\services\ljnuthyh] 'ImagePath' = '%WINDIR%\SysWOW64\ljnuthyh\kshlywff.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\ljnuthyh' = '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%\kshlywff.exe
  • %WINDIR%\syswow64\config\systemprofile:.repos
Moves the following files
  • from %TEMP%\kshlywff.exe to %WINDIR%\syswow64\ljnuthyh\kshlywff.exe
Deletes itself.
Network activity
TCP
HTTP GET requests
  • http://www.google.com/
  • http://www.tr##kip.net/ip
  • '43.#31.4.7':443
  • 'us#######nbound-1.mimecast.com':25
  • 'en##wn.com':25
  • 'ma####.mailtwo.com':25
  • 'alt2.gmail-smtp-in.l.google.com':25
  • 'ma##.tuni.fi':25
  • 'ss#.#odaddy.com':443
  • 'ma###w.nesa.fi':25
  • 'mt#.inet.fi':25
  • 'sm##.##b.shawcable.net':25
  • '46.#8.66.2':422
  • '93.##9.69.109':422
  • '46.#.52.109':422
  • '17#.#.114.177':422
  • 'au##.uber.com':443
  • '18#.#65.238.150':422
  • 'mx#.#entel.it':25
  • 'mx.##oeuro.com':25
  • 'ma##.skrig.dk':25
  • 'ap#.###.#rotection.outlook.com':25
  • 'mx####.##il.gm0.yahoodns.net':25
  • 'ma###.pricon.ph':25
  • 'sm##.tin.it':25
  • 'mt##.##0.yahoodns.net':25
  • 'in#####.registeredsite.com':25
  • 'mx###.##il.am0.yahoodns.net':25
  • 'ho#########.olc.protection.outlook.com':25
  • 'eu#.###.#rotection.outlook.com':25
  • 'mi####.bittubeapp.com':13333
  • '85.##4.134.88':486
  • '78.#1.67.23':422
  • 'sm#######tier.compassnet.co.nz':25
  • UDP
    • DNS ASK mi##########m.mail.protection.outlook.com
    • DNS ASK hs####lli.inet.fi
    • DNS ASK ne####hil.com.ph
    • DNS ASK hi##aku.ph
    • DNS ASK ns####.cs.upd.edu.ph
    • DNS ASK ca#.#ap.edu.ph
    • DNS ASK ph#.ph
    • DNS ASK lg#.#si.com.ph
    • DNS ASK ep#.com.ph
    • DNS ASK co##ne.ph
    • DNS ASK en##wn.com
    • DNS ASK
    • DNS ASK ya##o.ph
    • DNS ASK mt#.inet.fi
    • DNS ASK google.com
    • DNS ASK cs#.#lsu.edu.ph
    • DNS ASK cs#.#lsu-edu.ph
    • DNS ASK ya##o.co.ph
    • DNS ASK ai#####ippines.com.ph
    • DNS ASK mx#.#entel.it
    • DNS ASK me##el.it
    • DNS ASK pc###.com.ph
    • DNS ASK pa###c.net.ph
    • DNS ASK ba###ad.com.ph
    • DNS ASK se###ta.com.ph
    • DNS ASK mx##.bnr.ca
    • DNS ASK no##el.ca
    • DNS ASK dl###sb.edu.ph
    • DNS ASK ne#a.fi
    • DNS ASK ma###w.nesa.fi
    • DNS ASK ss#.#odaddy.com
    • DNS ASK ya##o.co.nz
    • DNS ASK au##.uber.com
    • DNS ASK us#######nbound-1.mimecast.com
    • DNS ASK vi##l.com
    • DNS ASK mx##.#indstream.net
    • DNS ASK de##zzd.com
    • DNS ASK mx.##ra.co.nz
    • DNS ASK xt##.co.nz
    • DNS ASK e3#.##.us.ibm.com
    • DNS ASK ra###nal.com
    • DNS ASK nd##.com
    • DNS ASK mx#######b02.gslb.pphosted.com
    • DNS ASK ww.#o.nz
    • DNS ASK ba######a.cloud.shentel.net
    • DNS ASK sh##tel.net
    • DNS ASK mx#######201.gslb.pphosted.com
    • DNS ASK ve##zon.com
    • DNS ASK ed####1.sne1.net
    • DNS ASK bo##kia.com
    • DNS ASK ma####.mailtwo.com
    • DNS ASK ad##ess.com
    • DNS ASK alt2.gmail-smtp-in.l.google.com
    • DNS ASK gm##l.com
    • DNS ASK mx#######f01.gslb.pphosted.com
    • DNS ASK ha###burton.com
    • DNS ASK ma##.tuni.fi
    • DNS ASK tu#.fi
    • DNS ASK be###mm.nf.ca
    • DNS ASK fr##.net.nz
    • DNS ASK ro###tmail.com
    • DNS ASK sh#w.ca
    • DNS ASK ma###.pricon.ph
    • DNS ASK pr##on.ph
    • DNS ASK mx###.##il.am0.yahoodns.net
    • DNS ASK ya##o.it
    • DNS ASK mt##.##0.yahoodns.net
    • DNS ASK ya##o.com
    • DNS ASK in#####.registeredsite.com
    • DNS ASK co###rtec.com
    • DNS ASK ro###lepage.com
    • DNS ASK ek###er.com.ph
    • DNS ASK ti##ali.no
    • DNS ASK po#.#nline.no
    • DNS ASK io#.it
    • DNS ASK cs#.com.ph
    • DNS ASK 19#.###.#11.95.cbl.abuseat.org
    • DNS ASK mi####.bittubeapp.com
    • DNS ASK ho##ail.com
    • DNS ASK 19#.###.##1.95.sbl-xbl.spamhaus.org
    • DNS ASK eu#.###.#rotection.outlook.com
    • DNS ASK 19#.###.#11.95.zen.spamhaus.org
    • DNS ASK li#e.be
    • DNS ASK 19#.###.#11.95.bl.spamcop.net
    • DNS ASK mx#######d02.gslb.pphosted.com
    • DNS ASK 19#.###.#11.95.dnsbl.sorbs.net
    • DNS ASK us#.#upont.com
    • DNS ASK 19#.###.211.95.in-addr.arpa
    • DNS ASK ho#########.olc.protection.outlook.com
    • DNS ASK sm###in.iol.it
    • DNS ASK ti#.it
    • DNS ASK sm##.tin.it
    • DNS ASK ec####.pnoc-ec.com.ph
    • DNS ASK pn###ec.com.ph
    • DNS ASK mx.##oeuro.com
    • DNS ASK ag###holm.dk
    • DNS ASK ex##ple.com
    • DNS ASK uk.##hjong.dk
    • DNS ASK ne##.ing.dk
    • DNS ASK mx##.##tzenitmail.dk
    • DNS ASK vi#.##bercity.dk
    • DNS ASK dk###01.tt.dk
    • DNS ASK ma##.skrig.dk
    • DNS ASK ak#3.dk
    • DNS ASK ya##o.ca
    • DNS ASK ap#.###.#rotection.outlook.com
    • DNS ASK li##.com.au
    • DNS ASK sm####n.virgilio.it
    • DNS ASK vi##ilio.it
    • DNS ASK mx####.##il.gm0.yahoodns.net
    • DNS ASK ao#.com
    • DNS ASK ti###linet.it
    • DNS ASK et###.#ail.tiscali.it
    • DNS ASK ti##ali.it
    • DNS ASK em###.isisecure.it
    • DNS ASK is##ine.it
    • DNS ASK ho##ail.it
    • DNS ASK sm####n.libero.it
    • DNS ASK li##ro.it
    • DNS ASK sm##.##b.shawcable.net
    • DNS ASK sm#######tier.compassnet.co.nz
    Miscellaneous
    Creates and executes the following
    • '%WINDIR%\syswow64\ljnuthyh\kshlywff.exe' /d"<Full path to file>"
    • '%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\ljnuthyh\' (with hidden window)
    • '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\kshlywff.exe" %WINDIR%\SysWOW64\ljnuthyh\' (with hidden window)
    • '%WINDIR%\syswow64\sc.exe' create ljnuthyh binPath= "%WINDIR%\SysWOW64\ljnuthyh\kshlywff.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"' (with hidden window)
    • '%WINDIR%\syswow64\sc.exe' description ljnuthyh "wifi internet conection"' (with hidden window)
    • '%WINDIR%\syswow64\sc.exe' start ljnuthyh' (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\ljnuthyh\
    • '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\kshlywff.exe" %WINDIR%\SysWOW64\ljnuthyh\
    • '%WINDIR%\syswow64\sc.exe' create ljnuthyh binPath= "%WINDIR%\SysWOW64\ljnuthyh\kshlywff.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"
    • '%WINDIR%\syswow64\sc.exe' description ljnuthyh "wifi internet conection"
    • '%WINDIR%\syswow64\sc.exe' start ljnuthyh
    • '%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

    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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