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インターネットの片隅で〜mirai亜種のスキャン活動を可視化して流行を知る〜
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nhnmomonga
February 24, 2018
Programming
580
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インターネットの片隅で〜mirai亜種のスキャン活動を可視化して流行を知る〜
第三回ハニーポッター技術者交流会
nhnmomonga
February 24, 2018
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Transcript
Πϯλʔωοτͷ ย۱Ͱ @nhnmomonga ʙmiraiѥछͷεΩϟϯ׆ಈΛՄࢹԽͯ͠ྲྀߦΛΔʙ
ࣗݾհ • @nhnmomongaʢʹ΄ΜΜΜ͕ʣ • ୈ̎ճͰൃදͰ͖ͣࢿྉ্͚ͩ͛ͯΒͬͨਓͰ͢ • ʮϋχʔϙοτಉਓࢽͷڹͱऩࢧʯͬͯࢿྉ • ීஈίϯϐϡʔλʔϑΥϨϯδοΫΛͬͯ·͢ •
࣌ʑޡղ͞Ε·͕͢͜ΕΒࣄͰΓಘͨใͰ͋Γ·ͤΜʢػ ඍใͰͳ͍ʣ
ຊ • ͱ͋ΔIIJ͞Μͷϒϩάهࣄ[1]ΛಡΜͰ͍ͨ • miraiѥछʹײછ͍ͯ͠Δຊࠃͷϗετ͕૿͑ͯΔ • ʢࣗͷཧ͍ͯ͠ΔʣϋχʔϙοτͰಉ͡Α͏ͳ͕ग़Δʁ • Θ͟Θ͟ૂΘΕΔΑ͏ͳ͜ͱ͍ͯ͠ͳ͍ •
͍ΘΠϯλʔωοτͷย۱ʹ͋Δ • SHDOANʹਖ਼֬ʹัଊ͞ΕͨΓ͞Εͳ͔ͬͨΓ… • ϩάΠϯͯ͠ͳ͍͔Β͓ۚΛ͏ͱͲ͏ͳΔ͔Θ͔Βͳ͍ [1]ຊࠃʹ͓͚Δ Mirai ѥछͷײછঢ়گ (201712݄) | https://sect.iij.ad.jp/d/2018/01/091843.html
ݕূ • ಉϒϩάʹΑΔͱɺʮmiraiѥछͷεΩϟϯ׆ಈʹεΩϟϯͷύέο τͷॳظγʔέϯεφϯόʔ͕ѼઌIPͱಉ͡ʯͱͯ͠؍ଌ • ಉ͜͡ͱΛϋχʔϙοτͰͯ͠ൺֱ͢Δ • ͲΕ͚ͩʢmiraiѥछʹײછ͍ͯ͠Δͱࢥ͖͠ʣࠃͷϗετ͔Β εΩϟϯΛड͚͍ͯΔ͔ݟͯΈ͍ͨ •
ϋχʔϙοτΛҰ͔͠ӡ༻͍ͯ͠ͳͯ͘ɺʢͪΌΜͱʣྲྀߦ ʹࠨӈ͞ΕΔͷ͔ʁ
ݕূํ๏ • tsharkͰύέοτΩϟϓνϟΛͱΔ • ʢ͓ۚͳ͍ͷͰʣखݩʹpcapϑΝΠϧΛμϯϩʔυ • pcapϑΝΠϧΛtsharkΛͬͯcsvϑΝΠϧ͢Δ • LogstashͰElasticsearchʹͿͪࠐΉ •
KibanaͰDashboard࡞Δ • ํ๏ͷৄࡉϒϩάʹͯ • http://onthesoup.hatenablog.com/entry/2018/02/11/061500
DEMO
݁Ռ • ͜͜·ͰͬͯɺΑ͘ߟ͑ͨΒ͕ಉ͔͡·ͰIIJ͞Μ͕2݄ͷ ੳ݁ՌΛग़ͯ͘͠Εͳ͍ͱΘ͔Βͳ͍͜ͱ͕Θ͔ͬͨʢসʣ • Ͳͷ͘Β͍ࠃϗετ͔ΒεΩϟϯ͕͋Δ͔Θ͔͚ͬͨͲ • ϓϥεʹߟ͑Δͱࠓͷঢ়گ͕Θ͔ͬͨʢͱ͍͏͜ͱʹ͍ͯͩ͘͠͞ʣ • ॳతͷୡདྷ݄IIJ͞Μ͕2݄ͷϒϩάΛॻ͍ͯ͘ΕΔ͔Ͳ
͏͔ʹ͔͔͍ͬͯΔ…ʂ • ͜͠ͷʹؔऀ͍Βͬ͠ΌͬͨΒͳΜͱ͔͓ئ͍͠·͢
͓Ͷ͕͍ • DemoΛݟͯͩ͘͞ΔͱΘ͔ͬͨͱࢥ͍·͕͢ɺࠃϗετ͔Βͷε Ωϟϯ݁ߏଘࡏ͍ͯ͠·͢ • ࣮ࣗ͝ՈʹؼͬͨΒҰϧʔλʔIPΧϝϥΛݕ͍ͯͩ͘͠͞ • ઃஔͨ͠Β୯ҐͰͦͷ··ͬͯී௨ͷ͝ՈఉͳΒΑ͋͘Δͣ • ڈ͔Βࠓʹ͔͚ͯࠃͰྲྀߦ֦ͨ͠ࢄ׆ಈʹར༻͞Ε͍ͯΔͱ
ݴΘΕ͍ͯΔ੬ऑੑ2014ʹެ։͞Εͨ੬ऑੑʢCVE-2014-8361ʣ • ࣮͝ՈʹؼΔػձͬͯҰͰԿճ͋Γ·͔͢ʁ • Miraiѥछ͚ͩ͡Όͳ͘CoinMinerྲྀߦ͍ͬͯ·͢ ͓͠·͍