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WebLogic の脆弱性(CVE-2017-10271)を狙う攻撃者たちの手法

WebLogic の脆弱性(CVE-2017-10271)を狙う攻撃者たちの手法

2018年2月24日 第3回ハニーポッター技術交流会発表資料 @morihi_soc #hanipo_tech
https://hanipo-tech.connpass.com/event/78002/

292a5fc0722cc2ddabf2b088a8f12793?s=128

Kazuaki Morihisa

February 24, 2018
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  1. 2018೥2݄24೔ ୈ3ճϋχʔϙολʔٕज़ަྲྀձൃදࢿྉ WebLogic ͷ੬ऑੑ(CVE-2017-10271)Λ ૂ͏߈ܸऀͨͪͷख๏ @morihi_soc

  2. XIPBNJ w ৿ٱ࿨ত !NPSJIJ@TPD  w ຊۀ͸ηΩϡϦςΟΤϯδχΞɾΞφϦετ w झຯͰϋχʔϙοτͷӡ༻Λ͢Δϋχʔϙολʔ w

    ϒϩάˠIUUQXXXNPSJIJTPDOFU w ϋχʔϙολʔٕज़ަྲྀձओ࠵ऀ w άϧʔϓˠIUUQTIBOJQPUFDIDPOOQBTTDPN  ˡϒϩάͷʮϋχʔϙοτ؍࡯ه࿥ʯ͕ ຊʹͳΓ·ͨ͠ ೥݄೔ൃച ిࢠॻ੶൛ແྉࢼಡ൛͋Γ·͢  ʮαΠόʔ߈ܸͷ଍੻Λ෼ੳ͢Δ ϋχʔϙοτ؍࡯ه࿥ʯ ஶऀɿ৿ٱ࿨ত ग़൛ɿल࿨γεςϜ ࠓ·Ͱʹ͓ੈ࿩ʹͳͬͨΠϕϯτ ɾ*5,FZT ݱ4FD$BQ  ɾωοτϫʔΫύέοτΛಡΉձ Ծ  ɾ/*4$αΠόʔϋϩ΢Οϯ ɾ*OUFSOFU8FFL ɾ)BSEFOJOH 7BMVF$IBJO༏উ  ɾTTNKQ ɾ"*4FD ɾULULηΩϡϦςΟษڧձ
  3. ͓඼ॻ͖ w 8FC-PHJDͷ੬ऑੑ $7& ͱ͸ w ࠃ͝ͱͷ߈ܸݕ஌ճ਺ͷूܭ w ߈ܸස౓ͷ෼ੳ w

    ߈ܸର৅ͷௐࠪͱ߈ܸ w Ͳͷϙʔτ͕ૂΘΕͨͷ͔  w ߈ܸऀͷ؀ڥΛਪଌ͢Δ w ߈ܸࣄྫ঺հ w ·ͱΊ 3
  4. 8FC-PHJDͷ੬ऑੑ $7& ͱ͸ w +7/J1FEJBΑΓ l0SBDMF'VTJPO.JEEMFXBSFͷ0SBDMF8FC-PHJD 4FSWFSʹ͸ɺ8-44FDVSJUZʹؔ͢Δॲཧʹෆඋ͕͋ ΔͨΊɺػີੑɺ׬શੑɺ͓ΑͼՄ༻ੑʹӨڹͷ͋Δ੬ ऑੑ͕ଘࡏ͠·͢ɻl lϦϞʔτͷ߈ܸऀʹΑΓɺ৘ใΛऔಘ͞ΕΔɺ৘ใΛվ

    ͟Μ͞ΕΔɺ͓ΑͼαʔϏεӡ༻๦֐ %P4 ߈ܸ͕ߦΘ ΕΔՄೳੑ͕͋Γ·͢ɻl 4 JVNDB-2017-008734 Oracle Fusion Middleware ͷ Oracle WebLogic Server ʹ͓͚Δ WLS Security ʹؔ͢Δ੬ऑੑ http://jvndb.jvn.jp/ja/contents/2017/JVNDB-2017-008734.html →ϦϞʔτ͔Β೚ҙͷίʔυΛ࣮ߦ(RCE)Մೳͳ ެ։͞Εͨ߈ܸπʔϧ͕ެ։͞Εͨ
  5. ߈ܸϦΫΤεταϯϓϧ 5

  6. λΠϜϥΠϯ w ೥݄ɿ0SBDMF͔Βमਖ਼ϓϩάϥϜ͕ެ։ w ೥݄Լ०ɿ߈ܸίʔυ͕ެ։ w ೥݄೔ɿϋχʔϙοτͰ߈ܸΛݕ஌ w ೥݄೔ɿϒϩάهࣄެ։ w

    ೥݄೔࣌఺ɿ߈ܸܧଓதʜ 6 ϋχʔϙοτ؍࡯ه࿥(38)ʮWebLogic ͷ WLS Security ʹର͢ΔίϚϯυ࣮ߦͷࢼΈ(CVE-2017-10271)ʯ http://www.morihi-soc.net/?p=910
  7. ϋχʔϙολʔͷ೰Έ ϩάެ։ج४ w ͳ݄ͥ೔࣌఺Ͱ͸πΠʔτͷΈ 7 w ໌֬ʹ߈ܸίʔυ͕ެ։͞Ε͍ͯΔͱ͍͏৘ใ͕ ಘΒΕͳ͔ͬͨɻϩάΛެ։͢Δ͜ͱͰɺ໛฿͠ ͨ߈ܸʹΑΔೋ࣍ඃ֐ͷ๷ࢭΛ༏ઌɻ w

    ߈ܸΛݕ஌͍ͯ͠Δࣄ࣮͸఻͔͑ͨͬͨɻ w ͦͷޙɺ(JU)VC౳Ͱ߈ܸπʔϧ͕ެ։͞Ε͍ͯΔ ͜ͱΛ֬ೝɻϒϩάެ։ʹࢸΔɻ w ߈ܸϩάΛެ։͢Δ͜ͱͰɺύονద༻ͷۓٸੑɺ ͓Αͼ߈ܸੑͷߴ͞Λ఻͔͑ͨͬͨɻ
  8. ηΩϡϦςΟͷ৘ใڞ༗͸೉͍͠ w ηΩϡϦςΟͷ৘ใڞ༗ͱ͍͑͹ɺ*1"΍+1$&35 $$ɺηΩϡϦςΟϕϯμʔΛ͸͡ΊɺॏཁΠϯϑϥ Ͱ͋Ε͹/*4$ͷηϓλʔɺ*1"ͷαΠόʔ৘ใڞ ༗ΠχγΞςΟϒ +$4*1 ͳͲɺଟ਺ଘࡏ͢Δɻ w ͨͩ͠߈ܸͷ࣮ମ͕Ұൠެ։͞ΕΔ͜ͱ͸كɻ

    w ߈ܸऀ͸Ξϯμʔάϥ΢ϯυͳͱ͜ΖͰɺ߈ܸ৘ใ Λڞ༗͍ͯ͠Δʹ΋ؔΘΒͣɺηΩϡϦςΟʹܞΘ Δਓͨͪͷ৘ใڞ༗ʹ͸λΠϜϥά͕͋Δɻ 8 ˠϋχʔϙοτͩͱ৘ใެ։͠΍͍͢ͷͰɺ
 ݸਓతͳ׆ಈͱͯ͠ϒϩάΛॻ͍͍ͯ·͢ɻ
  9. ࢀߟ ੬ऑੑ৘ใ͓͍ͬͯ͘Β w ࠓճͷ੬ऑੑ৘ใ ߈ܸίʔυ ͷ஋ஈ͸ɾɾɾ 9 Oracle WebLogic Server

    10.3.6.0.0/12.1.3.0.0/12.2.1.1.0/12.2.1.2.0 WLS Security unknown vulnerability https://vuldb.com/?id.108063 →0day ͷؒ͸ɺ໿1100ສԁ-5300ສԁͩͬͨ
  10. ࠃ͝ͱͷ߈ܸݕ஌ճ਺ͷूܭ w ੈք֤஍͔Β߈ܸͷϩά͕࢒͍ͬͯͨɻ 10 352 தࠃ 331 ΞΠϧϥϯυ 324 ΞϝϦΧ߹ऺࠃ

    168 ηΠγΣϧ 100 Χβϑελϯڞ࿨ࠃ 89 ೔ຊ 53 Χφμ 47 ߳ߓ 46 ΢ΫϥΠφڞ࿨ࠃ 44 υΠπ࿈๜ڞ࿨ࠃ 24 ϋϯΨϦʔڞ࿨ࠃ 20 γϯΨϙʔϧ 12 ίϩϯϏΞڞ࿨ࠃ 11 ΢ϧάΞΠڞ࿨ࠃ 3 େؖຽࠃ 3 ϒϧΨϦΞڞ࿨ࠃ 2 ϧʔϚχΞ 2 ΦϥϯμԦࠃ 1 ϩγΞ 1 ε΢ΣʔσϯԦࠃ ࢖༻ͨ͠ GeoIP σʔλϕʔε(GeoLite2 Country: 2018೥2݄ʹμ΢ϯϩʔυͨ͠ϑΝΠϧΛར༻) https://dev.maxmind.com/ja/geolite2/
  11. 0 20 40 60 80 100 120 140 160 180

    2017/12/24 2017/12/25 2017/12/26 2017/12/27 2017/12/28 2017/12/29 2017/12/30 2017/12/31 2018/1/1 2018/1/2 2018/1/3 2018/1/4 2018/1/5 2018/1/6 2018/1/7 2018/1/8 2018/1/9 2018/1/10 2018/1/11 2018/1/12 2018/1/13 2018/1/14 2018/1/15 2018/1/16 2018/1/17 2018/1/18 2018/1/19 2018/1/20 2018/1/21 2018/1/22 2018/1/23 2018/1/24 2018/1/25 2018/1/26 2018/1/27 2018/1/28 2018/1/29 2018/1/30 2018/1/31 2018/2/1 2018/2/2 2018/2/3 2018/2/4 2018/2/5 2018/2/6 2018/2/7 2018/2/8 2018/2/9 2018/2/10 2018/2/11 2018/2/12 2018/2/13 2018/2/14 2018/2/15 2018/2/16 2018/2/17 WebLogic (2017 12 24 -2018 2 17 ) ߈ܸස౓Λ෼ੳ w ϋχʔϙοτͰݕ஌ͨ͠߈ܸΛ೔͝ͱʹूܭ w 8FC-PHJDͷௐࠪͱ߈ܸͷ྆ํΛؚΉ 11 156݅ͷ߈ܸ/೔͕࠷ଟ શମͰ1,633݅
  12. ߈ܸର৅ͷௐࠪͱ߈ܸ w ߈ܸπʔϧʹΑͬͯ͸ɺ߈ܸର৅Ͱ8FC-PHJD͕
 ಈ࡞͍ͯ͠Δ͔ௐࠪ͢Δ৔߹͕͋Γ·͢ɻ 12 ᶄWebLogic ͷِ૷Ԡ౴ ᶃGET/HEAD ϦΫΤετ WebLogic

    ͷՔಇঢ়گͷௐࠪ ᶅPOST ϦΫΤετ ੬ऑੑΛૂͬͨ߈ܸ ߈ܸऀ WOWHoneypot
  13. ߈ܸର৅ͷௐࠪͱ߈ܸ w ϦΫΤετຖʹूܭ w ਪଌ w (&5ϝιου͸ɺίϯςϯπ಺༰Λௐࠪ w )&"%ϝιου͸ɺ4FSWFSϔομΛௐࠪ w

    1045ϝιου͸ɺର৅ͷ؀ڥʹؔ܎ͳ͘߈ܸ 13 ϝιουͷछྨ ߈ܸݕ஌݅਺ (&5  )&"%  1045 
  14. Ͳͷϙʔτ͕ૂΘΕͨͷ͔  w ߈ܸऀ͸ɺ߈ܸର৅ͷ؀ڥΛඞͣ͠΋ߟྀ͍ͯ͠ͳ ͍ɻແࠩผʹ߈ܸ͍ͯ͠ΔՄೳੑ͕ߴ͍ɻ w 8FC-PHJDͷ؅ཧ༻ϙʔτͱͦΕҎ֎ͷϙʔτ΋
 ߈ܸ͕͖͍ͯͨͷ͔ 14 Oracle®

    Fusion Middleware Oracle Fusion Middlewareͷ؅ཧ 12c (12.1.2) https://docs.oracle.com/cd/E50629_01/core/ASADM/portnums.htm#CHDIACEF ※WebLogic ͷ؅ཧ༻ϙʔτͷ෦෼ʹ੺Լઢ
  15. Ͳͷϙʔτ͕ૂΘΕͨͷ͔  w ߈ܸର৅ͷϙʔτ൪߸Λूܭͨ͠ͱ͜Ζɺ߈ܸͷ
 େଟ਺͸൪ϙʔτͩͬͨɻ w 8FC-PHJDͷඪ४؅ཧ༻ϙʔτΛूதతʹ߈ܸͯ͠ ͍ͨ͜ͱ͕Θ͔ͬͨɻ߈ܸπʔϧ͕)5514ʹରԠ ͓ͯ͠Βͣɺ݅਺͕গͳ͍Մೳੑ͕͋Δɻ 15

    ϙʔτ൪߸ ߈ܸݕ஌݅਺           ͦͷଞ  ※Host ϔομʹه࿥͞Ε͍ͯͳ͍΋ͷ͸ूܭ͔Βআ֎
  16. ߈ܸऀͷ؀ڥΛਪଌ͢Δ w ߈ܸϦΫΤετͷ6TFS"HFOUΛूܭͯ͠Έͨɻ w ໌Β͔ʹෆ৹ͳ΋ͷͱɺ௨ৗൃੜ͠͏Δ΋ͷ͕ࠞࡏɻ 16 6TFS"HFOU ݅਺ .P[JMMB 8JOEPXT/5

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ͦͷଞ  → → → →
  17. ߈ܸऀͷ؀ڥΛਪଌ͢Δ w ߈ܸͷ1045σʔλ෦෼ΛΑ͘ݟΔͱɺ+BWBͷ
 όʔδϣϯ͕ࢦఆ͞Ε͍ͯΔ͜ͱ͕෼͔Δɻ w ߈ܸπʔϧʹґଘ͢Δ͕ɺ߈ܸऀ͕࢖ͬͨ߈ܸ
 πʔϧͷಛఆ΍+BWBͷόʔδϣϯ͕೺ѲͰ͖Δ͔΋ɻ w ඞͣೖΔΘ͚Ͱ͸ͳ͍఺ʹ஫ҙɻ 17

  18. ߈ܸऀͷ؀ڥΛਪଌ͢Δ w ͪΐͬͱݹ͍͕ɺ+%,ܥͷόʔδϣϯ͕ଟ͍ɻ w ߈ܸπʔϧʹϋʔυίʔυ͞Ε͍ͯΔՄೳੑ΋͋Γɻ 18 +BWBόʔδϣϯ ݅਺ @ 

    @      @    Java™ SE Development Kit 8, Update 151 (JDK 8u151) October 17, 2017 http://www.oracle.com/technetwork/java/javase/8u151-relnotes-3850493.html ←2017೥10݄ʹެ։ ͞Εͨόʔδϣϯ w 8FC-PHJDͷ੬ऑੑ৘ใ͸೥݄ʹެ։͞Ε
 ͍ͯͯɺπʔϧ͕࡞੒͞Εͨ࣌ظͱҰக͢Δɻ
  19. ౰೔ࢀՃऀͷΈʹެ։ 19 ࡟আ

  20. ߈ܸࣄྫ঺հ w 1045ͷσʔλ෦෼ͷΈΛநग़ͨ͠ͱ͜Ζɺશ෦Ͱ छྨͷ߈ܸύλʔϯ͕͋Γ·ͨ͠ɻ w ͦͷத͔Βಛ௃తͳ߈ܸΛϐοΫΞοϓͯ͠঺հ͠ ·͢ɻ w ߈ܸπʔϧ͕ެ։͞Ε͓ͯΓɺϋχʔϙοτͰݕ஌ ͨ͜͠ͱ͕͋ΔͨΊɺҰൠͷެ։αʔόʹରͯ͠΋

    ಉ༷ͷ߈ܸΛड͚͍ͯΔՄೳੑ͕͋Γ·͢ɻ 20
  21. ߈ܸϦΫΤετ w -JOVY؀ڥΛૂͬͨ߈ܸɻ w XHFUίϚϯυΛ࣮ߦ͠ɺKJCBϑΝΠϧͷμ΢ϯ ϩʔυΛࢼΈ͍ͯΔɻ 21

  22. ߈ܸϦΫΤετ w ߈ܸϦΫΤετͷଓ͖ɻ w DINPEίϚϯυͰ࣮ߦݖݶΛ෇༩ͨ͠ͷͪɺ
 ϑΝΠϧͷ࣮ߦΛࢼΈ͍ͯΔɻ 22

  23. μ΢ϯϩʔυ͞ΕͨϑΝΠϧ w 7JSVT5PUBMͷ݁Ռ͔ΒɺԾ૝௨՟ΛϚΠχϯά͢Δ ϓϩάϥϜͱݟड͚ΒΕΔɻ w 4)"BE⒎EEDFFDFCBGBCGEF⒎CGCFFECEGCB 23

  24. ߈ܸϦΫΤετ w +BWBͷ1SJOU8SJUFSΫϥεΛར༻ͨ͠ɺ8FC4IFMM ࡞੒ͷࢼΈɻ w KTQܗࣜͰɺΫΤϦύϥϝʔλʹ04ίϚϯυΛࢦ ఆ࣮ͯ͠ߦ͢Δ͜ͱ͕Ͱ͖ΔػೳΛ࣋ͭɻ 24

  25. ߈ܸϦΫΤετ w 8JOEPXT؀ڥΛૂͬͨ߈ܸɻ w DNEFYFͰɺ߈ܸऀ͕༻ҙͨ͠*1ΞυϨεʹ
 ରͯ͠QJOHίϚϯυΛ࣮ߦ͍ͯ͠Δ DBMMCBDL ɻ w ߈ܸऀ͕DBMMCBDLͷ༗ແΛௐ΂Ε͹ɺ੬ऑͳαʔ

    όͷଘࡏΛ஌Δ͜ͱ͕Ͱ͖Δɻ 25
  26. ߈ܸϦΫΤετ w +BWBͷOFU63-ΫϥεͰɺ߈ܸऀ͕༻ҙͨ͠*1 ΞυϨεʹରͯ͠)551ϦΫΤετΛൃੜͤ͞Δ DBMMCBDL ɻ w HPPEύϥϝʔλʹ߈ܸର৅ͷάϩʔόϧ*1ΞυϨ εΛࢦఆ͍ͯͨͨ͠Ίɺ߈ܸऀ͕ΞΫηεϩάΛݟ Δͱ੬ऑͳαʔόͷଘࡏΛ֬ೝͰ͖Δɻ

    26
  27. ߈ܸϦΫΤετ w ߈ܸϦΫΤετͷଓ͖ɻ1ZUIPOͷVSMMJCΛར༻͠ ͯ߈ܸऀ͕༻ҙͨ͠*1ΞυϨεʹରͯ͠)551Ϧ ΫΤετΛൃੜͤ͞Δ DBMMCBDL ɻ 27

  28. ߈ܸϦΫΤετ w ߈ܸϦΫΤετͷଓ͖ɻ1PXFSTIFMMͷXFCDMJFOU Λར༻ͯ͠߈ܸऀ͕༻ҙͨ͠*1ΞυϨεʹରͯ͠ )551ϦΫΤετΛൃੜͤ͞Δ DBMMCBDL ɻ 28

  29. ߈ܸϦΫΤετ w 8JOEPXT؀ڥΛૂͬͨ߈ܸɻ w 1PXFSTIFMMͷXFCDMJFOUΛར༻ͯ͠ɺϑΝΠϧΛ μ΢ϯϩʔυ͓Αͼ࣮ߦͤ͞Α͏ͱ͍ͯ͠Δɻ 29 SHA256: e080ee13da7371d1cbed9825540c19e94d8b2874adbe4c2d19c4d31a00c56ff8

  30. ߈ܸϦΫΤετ w -JOVY؀ڥΛૂͬͨ߈ܸɻ w DVSMίϚϯυͰɺQBTUFCJO͔ΒεΫϦϓτϑΝΠ ϧΛμ΢ϯϩʔυ͓Αͼ࣮ߦΛࢼΈΔɻ 30

  31. QBTUFCJO͔Βμ΢ϯϩʔυ͢ΔϑΝΠϧ w CBTIͷεΫϦϓτϑΝΠϧɻ w 3FE)BUܥͷ04Λର৅ʹ͓ͯ͠ΓɺZVNίϚϯ υͰෳ਺ͷπʔϧΛΠϯετʔϧޙɺDQVNJOFSΛ
 μ΢ϯϩʔυɺίϯύΠϧɺ࣮ߦ͍ͯ͠Δɻ w Ծ૝௨՟ͷ.POFSPΛϚΠχϯά͍ͯ͠ΔΑ͏ͩɻ 31

  32. ߈ܸϦΫΤετ w 8JOEPXT؀ڥΛૂͬͨ߈ܸ w 1PXFSTIFMMͰ%PXOMPBE4USJOHΛ࢖͍CBUϑΝΠ ϧΛμ΢ϯϩʔυɾ࣮ߦΛࢼΈΔɻ w ϩάൃݟ࣌ʹɺ͢ͰʹCBU͸μ΢ϯϩʔυͰ͖ͣɻ 32

  33. ߈ܸϦΫΤετ w 8JOEPXT؀ڥΛૂͬͨ߈ܸ w CBUϑΝΠϧΛ࡞੒࣮ͯ͠ߦ͠Α͏ͱ͍ͯ͠Δɻ w GUQʹΞΫηε͢ΔͨΊͷΞΧ΢ϯτ໊ɾύεϫʔ υؚ͕·Ε͓ͯΓɺϑΝΠϧͷऔಘɾௐࠪ͸ෆՄɻ 33

  34. ࡞੒͞ΕΔCBUϑΝΠϧ w Λվߦʹஔ׵ͯ͠ՄಡੑΛ্͛ͨ΋ͷɻ w '51αʔό͔ΒɺY[FYFΛμ΢ϯϩʔυ͢Δɻ w Y[FYFΛ࣮ߦͨ͠ޙɺ͢΂ͯͷϑΝΠϧΛ࡟আ͢Δɻ 34

  35. ߈ܸϦΫΤετ w -JOVY؀ڥΛૂͬͨ߈ܸɻ w QZUIPOΛ࢖ͬͯ߈ܸऀͷ༻ҙͨ͠αʔό΁ίωΫ τόοΫ͢Δίʔυؚ͕·Ε͍ͯΔɻ w QZUIPO΁ͷύε͕௨͍ͬͯΕ͹ɺDNEFYFܦ༝Ͱ 8JOEPXT؀ڥ΋߈ܸͰ͖Δͱߟ͑ΒΕΔɻ 35

  36. ߈ܸϦΫΤετ w 8JOEPXT؀ڥΛૂͬͨ߈ܸ w CJUTBENJOίϚϯυΛ࢖ͬͯϑΝΠϧΛμ΢ϯϩʔ υ͢Δɻ w μ΢ϯϩʔυͨ͠ϑΝΠϧͷ࣮ߦ͸ผͷϦΫΤετɻ 36

  37. ߈ܸϦΫΤετ w ߈ܸϦΫΤετͷ௥ܸɻ w TUBSUίϚϯυͰμ΢ϯϩʔυ͓͍ͯͨ͠ϑΝΠϧΛ ࣮ߦ͢Δ͚ͩɻܺΛੜ͡͵ೋஈߏ͑  w ϩάൃݟ࣌ʹɺEJTDV[FYF͸μ΢ϯϩʔυͰ͖ͣɻ 37

  38. ߈ܸϦΫΤετ w 8JOEPXT؀ڥΛૂͬͨ߈ܸ w FYQMPSFSίϚϯυͰ8FCϖʔδΛ։͘ɻ w DOIWDP͸ɺϒϥ΢βϚΠχϯάʹؔ͢ΔυϝΠϯ ͰɺΞΫηε͍ͯ͠ΔϑΝΠϧʹ͸+BWB4DSJQU͕ ؚ·Ε͍ͯͨɻ 38

  39. উखʹ։͔ΕΔ8FCϖʔδͷιʔε Ұ෦ 39

  40. ߈ܸϦΫΤετ w 8JOEPXT؀ڥΛૂͬͨ߈ܸ w DFSUVUJMίϚϯυͰϑΝΠϧΛμ΢ϯϩʔυ͢Δɻ w อଘ͢ΔϑΝΠϧͷ֦ுࢠ͸ʮWCTʯ w ϩάൃݟ࣌ʹɺVQUYU͸μ΢ϯϩʔυͰ͖ͣɻ 40

  41. ߈ܸϦΫΤετ w ߈ܸϦΫΤετͷ௥ܸ w DTDSJQUίϚϯυͰɺμ΢ϯϩʔυͨ͠εΫϦϓτ ϑΝΠϧΛ࣮ߦ͢Δ͚ͩɻ w ߈ܸϦΫΤετ͸ඇৗʹ௝͍͠૊Έ߹Θͤɻ 41 (certutil

    ࢀߟ)๷Ӵؔ࿈ͷϑΝΠϧΛ૷͏ϚΫϩϚϧ΢ΣΞͷ৽͍͠खޱ
 (ϚΫχΧωοτϫʔΫε ηΩϡϦςΟݚڀηϯλʔϒϩά) http://blog.macnica.net/blog/2017/12/post-8c22.html
  42. ߈ܸϦΫΤετ w -JOVY؀ڥΛૂͬͨ߈ܸɻ w DVSMίϚϯυͰɺIUUQTͰγΣϧεΫϦϓτΛμ΢ ϯϩʔυ͠ɺ࣮ߦ͠Α͏ͱ͍ͯ͠Δɻ w ߈ܸऀͷૂ͍͕ɺ͔ͳΓΤά͍ɻ 42

  43. USBOTGFSTIͷத਎ 43 linuxsyn→DoS πʔϧ minerd→ϚΠχϯάπʔϧ crontab ΁ొ࿥ͯ͠ɺ
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  44. ߈ܸ͕੒ޭ͢Δͱ w %P4πʔϧͷར༻ʹΑΓɺωοτϫʔΫϦιʔεΛ
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  45. ·ͱΊ w 0SBDMF8FC-PHJDͷ੬ऑੑ $7& ʹ ͍ͭͯ঺հ͠·ͨ͠ɻ w ೥݄຤͔Β೥݄·ͰͷϩάΛ෼ੳ͠ ͨ݁Ռɺແࠩผʹ߈ܸ͍ͯ͠Δͱߟ͑ΒΕΔ௨৴͕ େଟ਺Ͱͨ͠ɻ

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  46. *P$ 01ebeaf06f5a2fcbf14025a8e683293d cat.php 036b34853622f38c285babf1a8670b62 svchosx.exe 0a6f3934f53966e2bdd4721ba512bd1c weblogic.hta 0b156ec492ea45d282cf823415ecaf12 IPsecSrv.dll 0d91bd78bfb6eab168ebb697bd5d31a4

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  47. *P$ w ߈ܸऀͷ44)ͷެ։ݤ ˞SPPUϢʔβͷTTIBVUIPSJ[FE@LFZTϑΝΠϧ΁௥ه ΛࢼΈ͍ͯ·ͨ͠ɻ w 1BTUFCJOͷϑΝΠϧ IUUQˠI99Q IUUQTˠI99QT 

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  48. )BQQZ)POFZQPU 48 ←ϔϦΞϯϑΥϥͷ஥ؒ(৯஬২෺) 2017೥10݄27೔ ເͷౡ ೤ଳ২෺ؗͰࡱӨ ೆΞϝϦΧͷΪΞφߴ஍ʹ͚ͩੜଉ͢Δɻ ͓͠·͍