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Trojan.Siggen14.52352

Added to the Dr.Web virus database: 2021-08-03

Virus description added:

Technical Information

To ensure autorun and distribution
Sets the following service settings
  • [<HKLM>\System\CurrentControlSet\Services\gzoxuhsc] 'Start' = '00000002'
  • [<HKLM>\System\CurrentControlSet\Services\gzoxuhsc] 'ImagePath' = '%WINDIR%\SysWOW64\gzoxuhsc\hasomxl.exe /d"<Full path to file>"'
  • [<HKLM>\SYSTEM\CurrentControlSet\services\gzoxuhsc] 'ImagePath' = '%WINDIR%\SysWOW64\gzoxuhsc\hasomxl.exe'
Creates the following services
  • 'gzoxuhsc' %WINDIR%\SysWOW64\gzoxuhsc\hasomxl.exe /d"<Full path to file>"
  • 'gzoxuhsc' %WINDIR%\SysWOW64\gzoxuhsc\hasomxl.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\gzoxuhsc' = '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%\hasomxl.exe
  • %WINDIR%\syswow64\config\systemprofile:.repos
Moves the following files
  • from %TEMP%\hasomxl.exe to %WINDIR%\syswow64\gzoxuhsc\hasomxl.exe
Deletes itself.
Network activity
Connects to
  • 'de###twax.ru':443
  • '95.##6.195.92':429
  • '19#.#62.246.7':429
  • '5.##.37.41':429
  • 'google.com':80
  • 'gm###.##m.1.0001.arsmtp.com':25
  • 'mx###.##il.am0.yahoodns.net':25
  • 'mx#######501.gslb.pphosted.com':25
  • 'go##le.de':443
  • 'ip.####y.hacklix.com':443
  • 'google.com':443
  • 'in###gram.com':443
  • 'au#####ver.mojang.com':443
  • 'pu######1.mail2world.com':25
  • '20#.#38.181.240':25
  • '19#.#6.146.43':429
  • '19#.#6.146.41':429
  • '19#.#6.146.42':429
  • 'am####03.aig.com':25
  • 'mx#.####.net.gslb.pphosted.com':25
  • 'alt2.gmail-smtp-in.l.google.com':25
  • 'alt1.gmail-smtp-in.l.google.com':25
  • 'mt##.##0.yahoodns.net':25
  • 'ho#########.olc.protection.outlook.com':25
  • 'fa###ool.xyz':10060
  • 'co########l.org.2.0001.arsmtp.com':25
  • 'ma##.##st-my-mail.com':25
  • 'go###e.co.uk':443
  • 'co############humberland.co.uk.1.0001.arsmtp.com':25
  • 'alt3.gmail-smtp-in.l.google.com':25
  • 'mx#######d02.gslb.pphosted.com':25
  • 'mx####.##il.gm0.yahoodns.net':25
  • 'cu#######-1.in.mailcontrol.com':25
  • 'mx#######701.gslb.pphosted.com':25
  • 'dn###rotect.net':25
  • 'de###twax.ru':485
  • 'mx.##stpost.net':25
  • '14#.#51.9.27':25
TCP
HTTP GET requests
  • http://www.google.com/
Other
  • 'de###twax.ru':443
  • '5.##.37.41':429
  • '95.##6.195.92':429
  • '19#.#62.246.7':429
  • 'gm###.##m.1.0001.arsmtp.com':25
  • 'mx###.##il.am0.yahoodns.net':25
  • 'go##le.de':443
  • 'ip.####y.hacklix.com':443
  • '20#.#38.181.240':25
  • 'google.com':443
  • 'dn###rotect.net':25
  • 'in###gram.com':443
  • 'au#####ver.mojang.com':443
  • 'pu######1.mail2world.com':25
  • 'ma##.##st-my-mail.com':25
  • '19#.#6.146.42':429
  • 'go###e.co.uk':443
  • '19#.#6.146.41':429
  • 'co########l.org.2.0001.arsmtp.com':25
  • 'de###twax.ru':485
  • 'mt##.##0.yahoodns.net':25
  • 'alt2.gmail-smtp-in.l.google.com':25
  • 'fa###ool.xyz':10060
  • 'ho#########.olc.protection.outlook.com':25
  • 'alt1.gmail-smtp-in.l.google.com':25
  • 'co############humberland.co.uk.1.0001.arsmtp.com':25
  • 'mx#.####.net.gslb.pphosted.com':25
  • 'mx.##stpost.net':25
  • 'alt3.gmail-smtp-in.l.google.com':25
  • 'mx####.##il.gm0.yahoodns.net':25
  • 'gmail-smtp-in.l.google.com':25
  • 'cu#######-1.in.mailcontrol.com':25
  • 'alt4.gmail-smtp-in.l.google.com':25
  • '19#.#6.146.43':429
  • '14#.#51.9.27':25
UDP
  • DNS ASK de###twax.ru
  • DNS ASK dn###rotect.net
  • DNS ASK alt4.gmail-smtp-in.l.google.com
  • DNS ASK gm##l.com
  • DNS ASK oc##.net
  • DNS ASK mx#.####.net.gslb.pphosted.com
  • DNS ASK ai#.com
  • DNS ASK am####03.aig.com
  • DNS ASK google.com
  • DNS ASK gm###.##m.1.0001.arsmtp.com
  • DNS ASK co############humberland.co.uk.1.0001.arsmtp.com
  • DNS ASK ya##o.co.uk
  • DNS ASK go##le.de
  • DNS ASK go###e.co.uk
  • DNS ASK ip.####y.hacklix.com
  • DNS ASK in###gram.com
  • DNS ASK au#####ver.mojang.com
  • DNS ASK ym##l.com
  • DNS ASK ya##o.es
  • DNS ASK ma###irene.com
  • DNS ASK pu######1.mail2world.com
  • DNS ASK mx#######701.gslb.pphosted.com
  • DNS ASK gmail-smtp-in.l.google.com
  • DNS ASK kc#.com
  • DNS ASK cu#######-1.in.mailcontrol.com
  • DNS ASK sl####asters.co.uk
  • DNS ASK alt2.gmail-smtp-in.l.google.com
  • DNS ASK alt1.gmail-smtp-in.l.google.com
  • DNS ASK mt##.##0.yahoodns.net
  • DNS ASK ho##ail.com
  • DNS ASK ho#########.olc.protection.outlook.com
  • DNS ASK 19#.###.211.95.in-addr.arpa
  • DNS ASK fa###ool.xyz
  • DNS ASK co###gehill.org
  • DNS ASK co########l.org.2.0001.arsmtp.com
  • DNS ASK cr####anddazed.com
  • DNS ASK mx###.##il.am0.yahoodns.net
  • DNS ASK co#######nnorthumberland.co.uk
  • DNS ASK mx#######501.gslb.pphosted.com
  • DNS ASK we###ost.net
  • DNS ASK mx.##stpost.net
  • DNS ASK alt3.gmail-smtp-in.l.google.com
  • DNS ASK zu##ch.com
  • DNS ASK mx#######d02.gslb.pphosted.com
  • DNS ASK us##nk.com
  • DNS ASK ao#.com
  • DNS ASK mx####.##il.gm0.yahoodns.net
  • DNS ASK ya##o.com
  • DNS ASK am###trade.com
  • DNS ASK ma##.##st-my-mail.com
Miscellaneous
Creates and executes the following
  • '%WINDIR%\syswow64\gzoxuhsc\hasomxl.exe' /d"<Full path to file>"
  • '%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\gzoxuhsc\' (with hidden window)
  • '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\hasomxl.exe" %WINDIR%\SysWOW64\gzoxuhsc\' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' create gzoxuhsc binPath= "%WINDIR%\SysWOW64\gzoxuhsc\hasomxl.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' description gzoxuhsc "wifi internet conection"' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' start gzoxuhsc' (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\gzoxuhsc\
  • '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\hasomxl.exe" %WINDIR%\SysWOW64\gzoxuhsc\
  • '%WINDIR%\syswow64\sc.exe' create gzoxuhsc binPath= "%WINDIR%\SysWOW64\gzoxuhsc\hasomxl.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"
  • '%WINDIR%\syswow64\sc.exe' description gzoxuhsc "wifi internet conection"
  • '%WINDIR%\syswow64\sc.exe' start gzoxuhsc
  • '%WINDIR%\syswow64\svchost.exe'
  • '%WINDIR%\syswow64\svchost.exe' -o fastpool.xyz:10060 -u 9rLbTvsApFs3i3ojk5hDKicMNRQbxxFGwJA2hNC6NoZZDQN5tTFbhviFm4W3koxSrPg87Lnif7qxFYh9xpTJz1cT6B17Ph4.50000 -p x -k -a cn/half

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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