ハニーポットで見る攻撃の検知傾向 〜秘密のファイル〜

2019年2月16日 【第4回】サイバーセキュリティ勉強会2019 in 塩尻
@morihi_soc #shiojiri_oss
https://connpass.com/event/109559/

Transcript

1. 2019೥2݄16೔ ʲୈ4ճʳαΠόʔηΩϡϦςΟษڧձ2019 in Ԙ৲ൃදࢿྉ ϋχʔϙοτͰݟΔ߈ܸͷݕ஌܏޲ ʙൿີͷϑΝΠϧʙ @morihi_soc
2. ϋχʔϙοτͱൿີͷϑΝΠϧ 2 
   XIPBNJ w ৿ٱ
   ࿨ত !NPSJIJ@TPD
   
   w ຊۀ͸ωοτϫʔΫηΩϡϦςΟΤϯδχΞɾΞφϦετ
   w झຯͰϋχʔϙοτͷӡ༻Λ͢Δϋχʔϙολʔ
   w ϒϩάˠ
   IUUQTXXXNPSJIJTPDOFU
   w ϋχʔϙολʔٕज़ަྲྀձ
   ओ࠵ऀ
   w IUUQTIBOJQPUFDIDPOOQBTTDPN ࠓ·Ͱʹ͓ੈ࿩ʹͳͬͨΠϕϯτ(Ұ෦) ɾ*5,FZT ݱ4FD$BQ
   ɾωοτϫʔΫύέοτΛಡΉձ Ծ
   ɾ/*4$
   αΠόʔϋϩ΢Οϯ
   ɾ*OUFSOFU8FFL
   
   
   
   
   
   
   ɾ)BSEFOJOH
   ɾTTNKQ
   
   
   
   ɾ"*4FD
   
   
   ɾ4UVEZ$PEF
   ɾULUL
   ηΩϡϦςΟษڧձ
   ɾ૯ؔ੢αΠόʔηΩϡϦςΟ-5େձ
   ɾ08"41
   /BHPZB
   
   
   ɾ*P54FD+1
   ɾ͢ΈͩηΩϡϦςΟษڧձ ग़൛ͨ͠ຊ΍ٕज़ಉਓࢽ NEW 2018೥10݄ˣ
3. ϋχʔϙοτͱൿີͷϑΝΠϧ ͓඼ॻ͖ w ϋχʔϙοτͷ঺հ
   w 44)
   ϋχʔϙοτ
   w 8FC
   ϋχʔϙοτ
   w ߈ܸऀ͕ݟ͕ͨΔαʔόͷϑΝΠϧ
   w ߈ܸख๏
   w ߈ܸϩά
   w ·ͱΊ 3
4. ϋχʔϙοτͱൿີͷϑΝΠϧ ϋχʔϙοτͷ঺հ w ϋχʔϙοτ )POFZQPU ͱ͸ɺ͋͑ͯ߈ܸΛड͚Δ ͜ͱΛલఏͱͨ͠γεςϜͰ͢ɻ
   w ϋχʔϙοτΛӡ༻͢Δਓͷ͜ͱˠϋχʔϙολʔ
   w ϋχʔϙοτͰ͸༷ʑͳϩάΛऩूՄೳ
   w ௕ظతʹϋχʔϙοτΛӡ༻͍ͯ͠Δ͔Βͦ͜ɺ
 ߈ܸͷ܏޲Λ೺Ѳ͢Δ͜ͱ͕Ͱ͖Δɻ 4
5. ϋχʔϙοτͱൿີͷϑΝΠϧ ௿ର࿩ܕͷϋχʔϙοτ w ௿ର࿩ܕ
 ˠ࣮ࡏ͢Διϑτ΢ΣΞͳͲΛ໛฿͢Δํࣜ
   w 44)
   ϋχʔϙοτ
   w 44)
   ͰϦϞʔτΞΫηε͖ͯͨ͠߈ܸऀͷೖྗ ͞Εͨ
   04
   ίϚϯυΛه࿥͠ɺ؍࡯͢Δ͜ͱ͕ Ͱ͖Δɻ
   w 8FC
   ϋχʔϙοτ
   w )551
   ͷཁٻ಺༰Λड͚෇͚ͯɺ8FC
   ΞϓϦέʔ γϣϯͷ੬ऑੑ΍ϑΝΠϧͷௐࠪͳͲͷߦಈΛ ؍࡯͢Δ͜ͱ͕Ͱ͖Δɻ 5 ※෼ྨํ๏΍ϋχʔϙοτͷछྨ͸ଟ਺͋Γ·͢ɻ
6. ϋχʔϙοτͱൿີͷϑΝΠϧ 44)
   ϋχʔϙοτͷ؍࡯ ྫ 6 SSHϋχʔϙοτ(Kippo)Ͱ࠾औͨ͠ෆਖ਼ϩάΠϯޙͷܗ੻2 https://youtu.be/iFvLr55A5nU
7. ϋχʔϙοτͱൿີͷϑΝΠϧ 7 ߈ܸऀΛ͓΋ͯͳ͢͠Δʮ808)POFZQPUʯͷ঺հ ߈ܸऀ WOWHoneypot ᶃअຐ͢ΔͰʙ GET /wordpress/wp-login.php HTTP/1.1 ᶅϩάΠϯϒϧʔτ߈ܸ΍ POST /wordpress/wp-login.php HTTP/1.1 ᶄWordPress ͷϖʔδͰ͢ɻͲ͏ͧ! 200 OK ͓ͬ WordPress ಈ͍͍ͯΔ΍Μ wp-login.php ͔ͩΒ WordPress Λ૷͓͏ GitHub→ https://github.com/morihisa/WOWHoneypot ෼ੳ ෼ੳ 8FMDPNF
   UP
   0NPUFOBTIJ
   8FC
   )POFZQPU
8. ϋχʔϙοτͱൿີͷϑΝΠϧ ߈ܸऀ͕ݟ͕ͨΔαʔόͷϑΝΠϧ w ߈ܸऀͷૂ͍͸༷ʑ
   w ৘ใ઄औ΍ۚમ໨తͳͲ͋Δ͕ɺ࠷ॳͷҰา͸߈ܸ ର৅αʔόͷ৘ใΛऩू͢Δ͜ͱɻ
   w ಘΒΕͨ৘ใΛجʹαʔόΛ߈ུ͍ͯ͘͠ɻ
   w ύεϫʔυ͕ه࿥͞Ε͍ͯΔϑΝΠϧ΍ɺઃఆϑΝ Πϧ͸ɺ߈ܸऀʹͱͬͯັྗతɻ
   w 8FC
   ϋχʔϙοτͰɺϑΝΠϧΛӾཡ͠Α͏ͱ͢Δ ߈ܸʹ஫໨ͯ͠ɺϩάΛ؍࡯ͯ͠Έ·ͨ͠ɻ 8
9. ϋχʔϙοτͱൿີͷϑΝΠϧ ߈ܸͷαϯϓϧϩά w 808)POFZQPU
   ͸ɺཁٻ಺༰ͷશจΛอଘ͢Δ͜ ͱ͕Մೳɻ
   w ޙ௥͍Ͱϩά෼ੳ͢Δͱ͖ʹศརɻ
   w ϩάͷ̍ߦ໨ʹΞΫηε͠Α͏ͱ͍ͯ͠ΔϑΝΠϧ ύε΍໊લؚ͕·Ε͍ͯΔɻ 9
10. ϋχʔϙοτͱൿີͷϑΝΠϧ ೥ͷ
    NPSJIJTPD
    ͷϩά݅਺ 10 ※ ࢲ͕ݸਓͰ؅ཧ͢Δ WOWHoneypot ͷϩά૯݅਺ NO PHOTO NO SNS ձ৔ݶΓ
11. ϋχʔϙοτͱൿີͷϑΝΠϧ αʔό಺෦ͷϑΝΠϧΛӾཡ͢Δ߈ܸ 11 w 8FC
    Ͱ͸ɺ͓͓·͔ʹͭͷ߈ܸख๏͕࢖ΘΕΔ
    w ੬ऑੑΛૂͬͨํ๏
    w ϩʔΧϧϑΝΠϧΠϯΫϧʔδϣϯ -'* ΍σΟϨ ΫτϦτϥόʔαϧ ͱ͍ͬͨ੬ऑੑΛѱ༻ͯ͠ɺ ϑΝΠϧΛӾཡ͢Δɻ
    w ઃఆෆඋΛૂͬͨํ๏
    w ओʹΞΫηε੍ݶ͕ෆे෼ͳαʔόΛૂͬͯɺϑΝ ΠϧΛӾཡ͢Δɻ * ύετϥόʔαϧͱ΋ݺ͹ΕΔ
12. ϋχʔϙοτͱൿີͷϑΝΠϧ ϑΝΠϧγεςϜશମ(ඇެ։ྖҬ) ɾ֎෦͔ΒͷΞΫηεΛڐՄ͠ͳ͍ྖҬͰ ɹOS ͷγεςϜϑΝΠϧͳͲΛஔ͘ͱ͜Ζ ߈ܸͷجຊతͳߟ͑ํ 12 Web αʔϏε༻σΟϨΫτϦ(ඇެ։ྖҬ) ɾ֎෦͔ΒͷΞΫηεΛڐՄ͠ͳ͍ྖҬ ɹઃఆϑΝΠϧྫ) .htpasswd ϑΝΠϧ Web αʔϏε༻σΟϨΫτϦ(ެ։ྖҬ) ɾ୭Ͱ΋ΞΫηεͰ͖ΔྖҬͰ ɹWeb αΠτͷϝΠϯίϯςϯπΛஔ͘ͱ͜Ζ ಛఆϢʔβ༻σΟϨΫτϦ(Ұ෦ެ։ྖҬ) ɾ৘ใڞ༗ܝࣔ൘ͳͲͰɺ ɹύεϫʔυΛ஌͍ͬͯΔ ɹϢʔβͷΈΞΫηεΛڐՄ͢Δ ɹઃఆϑΝΠϧྫ) .htaccess ϑΝΠϧ ެ։ྖҬ͔Β ෆਖ਼ʹ্ͷ֊૚Λ ࢀরՄೳͳͷ͕ σΟϨΫτϦ τϥόʔαϧ (੬ऑੑ) ΞΫηε੍ݶ͕ े෼Ͱ͸ͳ͍৔ॴΛ ࢀরՄೳͳͷ͕ ઃఆෆඋ
13. ʙ
    ੬ऑੑฤ
    ʙ
14. ϋχʔϙοτͱൿີͷϑΝΠϧ ߈ܸϩάαϯϓϧ
    ʙ੬ऑੑฤ
    ʙ w $JTDP
    7JEFP
    4VSWFJMMBODF
    0QFSBUJPOT
    .BOBHFS
    ͷ੬ऑੑΛૂͬͨ߈ܸ
    w ӾཡΛࢼΈ͍ͯΔϑΝΠϧ͸ɺ߈ܸऀ͕େ޷͖ͳ
 FUDQBTTXE
    ϑΝΠϧͰɺ04
    ͷΞΧ΢ϯτʹؔ͢ Δ৘ใ͕هࡌ͞Ε͍ͯ·͢ɻ
    w ͳ͓࠷ۙ͸ɺΞΧ΢ϯτͷύεϫʔυ৘ใ͸ه࿥͞ Εͳ͍ɻ FUDTIBEPX
    ʹอଘ͞Ε͍ͯΔ
    w 
    ͕࿈ͳ͍ͬͯΔ෦෼͕σΟϨΫτϦτϥόʔαϧ 14 /BWT/utils/logs/read_log.jsp?filter=&log=../../../../../../../../../etc/passwd ߈ܸϩά(ΞΫηεઌͷΈൈਮ)
15. ϋχʔϙοτͱൿີͷϑΝΠϧ FUDQBTTXE
    ϑΝΠϧαϯϓϧ 15 ؅ཧऀͷΞΧ΢ϯτ Web αʔϏεͷΞΧ΢ϯτ Ҿ༻ݩɿ Ubuntu 18.04.1
16. ϋχʔϙοτͱൿີͷϑΝΠϧ ߈ܸϩάαϯϓϧ
    ʙ੬ऑੑฤ
    ʙ w $.4
    ͷͭͰ͋Δ
    +PPNMB
    ͷ
    )%
    '-7
    1MBZFS
    ϓϥ άΠϯͷ੬ऑੑΛૂͬͨ߈ܸ
    w ӾཡΛࢼΈ͍ͯΔϑΝΠϧ͸
    DPOpHVSBUJPOQIQ
    w ͜ͷϑΝΠϧ͸
    +PPNMB
    ͷઃఆϑΝΠϧͰ͋Γɺ 8FC
    αΠτͷ໊લͳͲͷجຊ৘ใ͔Βɺσʔλϕʔ εͷ઀ଓ৘ใͳͲ͕هࡌ͞Ε͍ͯ·͢ɻ 16 /components/com_hdflvplayer/hdflvplayer/download.php?f=../../../configuration.php ߈ܸϩά(ΞΫηεઌͷΈൈਮ)
17. ϋχʔϙοτͱൿີͷϑΝΠϧ +PPNMB
    ͷઃఆϑΝΠϧαϯϓϧ w DPOpHVSBUJPOQIQ 17 Ҿ༻ݩɿ https://github.com/joomla/joomla-cms/blob/staging/installation/configuration.php-dist σʔλϕʔεઃఆ Web αΠτઃఆ
18. ϋχʔϙοτͱൿີͷϑΝΠϧ ߈ܸϩάαϯϓϧ
    ʙ੬ऑੑฤ
    ʙ w 8PSE1SFTT
    ͷ
    5IF
    *#4
    .BQQSP
    ϓϥάΠϯͷ੬ऑ ੑΛૂͬͨ߈ܸ
    w ӾཡΛࢼΈ͍ͯΔϑΝΠϧ͸
    XQDPOpHQIQ
    w ͜ͷϑΝΠϧ͸
    8PSE1SFTT
    ͷઃఆϑΝΠϧͰ͋Γɺ 8FC
    αΠτͷ໊લͳͲͷجຊ৘ใ͔Βɺσʔλϕʔ εͷ઀ଓ৘ใͳͲ͕هࡌ͞Ε͍ͯ·͢ɻ 18 /wp-content/plugins/ibs-mappro/lib/download.php?file=../../../../wp-config.php ߈ܸϩά(ΞΫηεઌͷΈൈਮ)
19. ϋχʔϙοτͱൿີͷϑΝΠϧ 8PSE1SFTT
    ͷઃఆϑΝΠϧαϯϓϧ w XQDPOpHQIQ 19 Ҿ༻ݩɿ https://github.com/WordPress/WordPress/blob/master/wp-config-sample.php σʔλϕʔεύεϫʔυ σʔλϕʔεΞΧ΢ϯτ
20. ϋχʔϙοτͱൿີͷϑΝΠϧ XQDPOpHQIQ
    ͷӾཡͷࢼΈ͸ଟ͍ w 8PSE1SFTT
    Λӡ༻͍ͯ͠ΔͱɺXQDPOpHQIQ
    Λ Ӿཡ͠Α͏ͱࢼΈΔ߈ܸ͕ඇৗʹଟ͍ɻ
    w ಛʹ
    4MJEFS
    3FWPMVUJPO
    ϓϥάΠϯͷ੬ऑੑ $7&  ʹର͢Δ߈ܸ͕ଟ͍ɻ
    w ೥ͷ੬ऑੑʹ΋ؔΘΒͣ೥ݱࡏ΋ଓ͘ɻ
    20 ↑ࢲͷϒϩάͷΞΫηεϩά͔Β߈ܸͷࠟ੻Λൈਮ
21. ʙ
    ઃఆෆඋฤ
    ʙ
22. ϋχʔϙοτͱൿີͷϑΝΠϧ ߈ܸϩάαϯϓϧ
    ʙઃఆෆඋฤ
    ʙ w ӾཡΛࢼΈ͍ͯΔϑΝΠϧ͸
    CBTI@IJTUPSZ
    w ͜ͷϑΝΠϧʹ͸ίϚϯυͷ࣮ߦه࿥ʹؔ͢Δ৘ใ ͕هࡌ͞Ε͍ͯ·͢ɻ
    w ͜ͷϑΝΠϧ͕ӾཡͰ͖ΔͱɺϑΥϧμͷߏ੒΍αʔ όͷઃఆ஋ͳͲΛਪଌͰ͖Δ৔߹͕͋Γ·͢ɻ
    w ΋͠ίϚϯυϥΠϯΦϓγϣϯͰɺύεϫʔυΛࢦ ఆ͍ͯͨ͠৔߹͸ɾɾɾɻ
    w ྫ
    
    NZTRM
    V
    SPPU
    Q
    QBTTXPSE 22 /.bash_history ߈ܸϩά(ΞΫηεઌͷΈൈਮ)
23. ϋχʔϙοτͱൿີͷϑΝΠϧ ߈ܸϩάαϯϓϧ
    ʙઃఆෆඋฤ
    ʙ w ӾཡΛࢼΈ͍ͯΔϑΝΠϧ͸
    FOW
    w ͜ͷϑΝΠϧʹ͸؀ڥม਺Λهड़͠·͢ɻ
    w ͨͱ͑͹
    04
    ΍
    8FC
    ΞϓϦέʔγϣϯͳͲͷ؀ڥ ৘ใ ࣮ߦ࣌ͷύε΍
    "1*
    ΩʔͳͲ ͕هࡌ͞Ε͍ͯ ·͢ɻ
    w ΞϓϦέʔγϣϯͷ
    "1*
    Ωʔ͕߈ܸऀʹ஌ΒΕͯ͠ ·͏ͱɺෆਖ਼ʹૢ࡞͞Εͯ͠·͏͜ͱʹܨ͕Γ·͢ɻ 23 /.env ߈ܸϩά(ΞΫηεઌͷΈൈਮ)
24. ϋχʔϙοτͱൿີͷϑΝΠϧ ߈ܸϩάαϯϓϧ
    ʙઃఆෆඋฤ
    ʙ 24 /.vscode/ftp-sync.json ߈ܸϩά(ΞΫηεઌͷΈൈਮ) w ӾཡΛࢼΈ͍ͯΔϑΝΠϧ͸
    GUQTZODKTPO
    w ͜ͷϑΝΠϧʹ͸
    '51
    ઀ଓ༻ͷΞΧ΢ϯτ໊͓Αͼ ύεϫʔυͳͲͷ৘ใ͕هࡌ͞Ε͍ͯ·͢ɻ
    w ςΩετΤσΟλͷઃఆϑΝΠϧͷͭ
    w '51
    ͷ઀ଓ৘ใ͸ΤσΟλΛ໰ΘͣૂΘΕ͍ͯΔ
    w "UPN
    ΤσΟλͷ
    3FNPUF
    '51
    ϓϥάΠϯ
    w 4VCMJNF
    5FYU
    ΤσΟλͷ
    4'51
    ύοέʔδ
    w 7JTVBM
    4UVEJP
    $PEF
    ΤσΟλ ࢀߟɿϋχʔϙοτ؍࡯ه࿥(43) ʮftpͷઃఆ৘ใΛૂͬͨϑΝΠϧͷ୳ࠪʯ https://www.morihi-soc.net/?p=995
25. ϋχʔϙοτͱൿີͷϑΝΠϧ ߈ܸϩάαϯϓϧ
    ʙઃఆෆඋฤ
    ʙ 25 /backup/bitcoin/wallet.dat ߈ܸϩά(ΞΫηεઌͷΈൈਮ) w ӾཡΛࢼΈ͍ͯΔϑΝΠϧ͸
    XBMMFUEBU
    w ͜ͷϑΝΠϧʹ͸ϏοτίΠϯΛอଘ͢Δ΢ΥϨο τ ిࢠࡒ෍ ͷ৘ใ͕هࡌ͞Ε͍ͯ·͢ɻ
    w ߈ܸऀʹݟΒΕͯ͠·͏ͱɺϏοτίΠϯΛউखʹ Ҿ͖ग़͞Εͯ͠·͏Մೳੑ͕͋Γ·͢ɻ
    w ϨϯλϧαʔόͳͲͰϚΠχϯάΛ͍ͯ͠Δ৔߹͸ɺ ΞΫηε੍ݶΛ͢ΔͳͲಛʹ஫ҙ͕ඞཁɻ
    w όοΫΞοϓσΟϨΫτϦΛૂ͍ͬͯΔ఺΋஫໨ ࢀߟɿ https://ja.bitcoinwiki.org/wiki/%E3%83%93%E3%83%83%E3%83%88%E3%82%B3%E3%82%A4%E3%83%B3%E3%83%BB%E3%82%A6%E3%82%A9%E3%83%AC%E3%83%83%E3%83%88
26. ϋχʔϙοτͱൿີͷϑΝΠϧ ߈ܸϩάαϯϓϧ
    ʙઃఆෆඋฤ
    ʙ 26 //../../../../../../../../boot.ini ߈ܸϩά(ΞΫηεઌͷΈൈਮ) w ӾཡΛࢼΈ͍ͯΔϑΝΠϧ͸
    CPPUJOJ
    w ͜ͷϑΝΠϧʹ͸
    8JOEPXT
    ͕ىಈ͢Δͱ͖ʹඞཁ ͳ৘ใ͕هࡌ͞Ε͍ͯ·͢ɻ
    w 8JOEPXT
    
    Ͱ͸ɺ؅ཧऀݖݶͰίϚϯυϓϩϯϓ τΛ։͖ɺCDEFEJU
    ίϚϯυͰදࣔՄೳɻ
    w ߈ܸର৅͸
    -JOVY
    ܥͷαʔό͚ͩͰ͸ͳ͘ɺ 8JOEPXT
    αʔό΋ؚ·Ε·͢ɻΠϯλʔωοτʹ ެ։͢Δͱ͖ʹ͸߈ܸରࡦ͕ඞཁͰ͢ɻ
27. ϋχʔϙοτͱൿີͷϑΝΠϧ ύε·ͱΊ w ੬ऑੑฤ
    w #85VUJMTMPHTSFBE@MPHKTQ pMUFSMPHFUDQBTTXE
    w DPNQPOFOUTDPN@IEqWQMBZFSIEqWQMBZFSEPXOMPBEQIQ GDPOpHVSBUJPOQIQ
    w XQDPOUFOUQMVHJOTJCTNBQQSPMJCEPXOMPBEQIQ pMFXQDPOpHQIQ
    w ઃఆෆඋฤ
    w CBTI@IJTUPSZ
    w FOW
    w WTDPEFGUQTZODKTPO
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