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Cyber Threat Intelligenceã¨DNSãƒ‡ãƒ¼ã‚¿ - ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ã‚³ãƒ³ã‚µãƒ«ã‚¿ãƒ³ãƒˆã®æ—¥èªŒã‹ã‚‰
Cyber Threat Intelligenceã‚„Threat Actor Attributionã®è¦³ç‚¹ã§ã¯ã€æ‚ªæ€§ãƒ‰ãƒ¡ã‚¤ãƒ³ï¼ˆC2ãƒ‰ãƒ¡ã‚¤ãƒ³ï¼‰ã¯è¶³ãŒé€Ÿã„ï¼ˆã™ãã«å¤‰ã‚ã‚‹ï¼‰ã®ã§DNS ãƒ‡ãƒ¼ã‚¿åˆ†æžã¯é‡è¦ãªè¦ç´ ã¨ãªã‚Šã¾ã™ã€‚ ä¾‹ãˆã°ã€ãƒžãƒ«ã‚¦ã‚§ã‚¢è§£æžãƒãƒ¼ãƒ ã«ã‚ˆã‚Šç‰¹å®šã®Cï¼’é€šä¿¡ã‚’ç™ºç”Ÿã•ã›ã¦ã„ãŸã¨å ±å‘Šã—ã¦ããŸã¨ã—ã¾ã™ã€‚ãã®éš›ã«ã€ãã®DNSã®æŽ¥ç¶šå…ˆã¯ã©ã“ãªã®ã‹ã€ãã®C2ãƒ‰ãƒ¡ã‚¤ãƒ³ã‚’è¨å®šã—ãŸäººç‰©ã¯èª°ãªã®ã‹ã€ãã®æ”»æ’ƒè€…ã®æ„å›³ã‚’åˆ†æžã™ã‚‹Threat Actor Attributionãªã©ã§ã‚‚ã€DNSæƒ…å ±ã®åˆ†æžã¯è¡Œã„ã¾ã™ã€‚ä»Šå›žã¯ã€ãã®Threat Intelligenceã®è¦³ç‚¹ã‹ã‚‰è¦‹ã‚‹DNSãƒ‡ãƒ¼ã‚¿ã«ã¤ã„ã¦è§£èª¬ã—ã¾ã™ã€‚ Active vs. Passive Cyber Threat Intelligenceã®è¦³ç‚¹ã§ã¯ã€DNSæƒ…å ±ã¨ã—ã¦ã¯ã€ç¾åœ¨æœ€æ–°ã®ãƒ‡ãƒ¼ã‚¿ã‚ˆã‚Šã€éŽåŽ»ã®ãƒ‡ãƒ¼ã‚¿ã«ä¾¡å€¤ãŒã‚ã‚Šã¾ã™ã€‚ãªãœãªã‚‰ã€ã‚¤ãƒ³ã‚·ãƒ‡ãƒ³ãƒˆåˆ†æžã‚’ã—ã¦ã„
teddy-g 2019/04/28
Active DNSã¨Passive DNSã«ã¤ã„ã¦ã€‚

cyberattacks

cybersecurity

dns
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Building a malware research and honeypot lab from scratch
teddy-g 2019/04/28
Sinkholeã¨Honeypotã‚’çµ„ã¿åˆã‚ã›ãŸé‹ç”¨ã€‚ä»®æƒ³åŒ–ç’°å¢ƒä¸Šã«ä»•çµ„ã¿ã‚’ä½œã£ã¦ã„ã‚‹ã€‚

cyberattacks

cybersecurity

dns

sinkhole

honeypots
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What is Passive DNS?
teddy-g 2019/04/28
DNS Sinkholeã®è§£èª¬ã€‚

cyberattacks

cybersecurity

dns

sinkhole

honeypots
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DNS Sinkhole Setup : Your defense against Bot net controllers
teddy-g 2019/04/28
DNS SinkholeãŒã©ã†æ©Ÿèƒ½ã™ã‚‹ã‹ã«ã¤ã„ã¦ã€‚

cybersecurity

cyberattacks

dns

sinkhole

honeypots
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How to Use DNS Analytics to Find the Compromised Domain in a Billion DNS Queries
teddy-g 2019/04/24
DNSãƒ‡ãƒ¼ã‚¿ã‚’ä½¿ã£ã¦è„…å¨/æ”»æ’ƒãƒ‰ãƒ¡ã‚¤ãƒ³ã‚’æ´—ã„å‡ºã™æ‰‹æ³•ã«ã¤ã„ã¦ã€‚ã„ã‚ã„ã‚å‚è€ƒã«ãªã‚‹ã€‚

cybersecurity

threathunting

threats

threatintelligence

dns
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Community Services | Team Cymru
15 years of service to network defenders, internet operators and cybercrime investigators worldwide.
teddy-g 2018/02/25
Team Cymruã‚’ç”¨ã„ãŸWhoisæƒ…å ±ãƒã‚§ãƒƒã‚¯ã«ã¤ã„ã¦ã€‚ã„ã‚ã„ã‚ä½¿ãˆã¦ä¾¿åˆ©ãã†ã€‚

web

api

dns

whois

security

cybersecurity
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Geekãªãºãƒ¼ã˜ : ä¸€èˆ¬åŒ–ã™ã‚‹DNSãƒ–ãƒãƒƒã‚ãƒ³ã‚°æ©Ÿèƒ½
2ãƒ¶æœˆå‰ã®è¨˜äº‹ã§ã™ãŒã€ISC BINDã«ãƒ–ãƒãƒƒã‚ãƒ³ã‚°æ©Ÿèƒ½ãŒæ¨™æº–æè¼‰ã•ã‚Œã‚‹ã¨ã„ã†ç™ºè¡¨ãŒã‚ã‚Šã¾ã—ãŸã€‚ BIND(Berkeley Internet Name Domain)ã¯ã€ã‚ªãƒ¼ãƒ—ãƒ³ã‚½ãƒ¼ã‚¹ã®ãƒ•ãƒªãƒ¼ã‚½ãƒ•ãƒˆã§ã€ä¸–ç•Œã§æœ€ã‚‚åˆ©ç”¨ã•ã‚Œã¦ã„ã‚‹DNSã‚µãƒ¼ãƒã§ã™ã€‚ ã“ã®BINDã«ãƒ–ãƒãƒƒã‚ãƒ³ã‚°æ©Ÿèƒ½ãŒæè¼‰ã•ã‚Œã‚‹äºˆå®šã§ã‚ã‚‹ã¨ç™ºè¡¨ã•ã‚Œã‚‹ã“ã¨ã«ã¯ã€éžå¸¸ã«å¤§ããªæ„å‘³ãŒã‚ã‚Šã¾ã™ã€‚ ã‚ã‚‹æ„å‘³ã€DNSãƒ–ãƒãƒƒã‚ãƒ³ã‚°ãŒã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã®æ¨™æº–æ©Ÿèƒ½ã¸ã¨è¿‘ã¥ã„ã¦ã„ã‚‹ã“ã¨ã‚’ç¤ºå”†ã—ã¦ã„ã‚‹ã®ã‹ã‚‚çŸ¥ã‚Œã¾ã›ã‚“ã€‚ ãã®ç™ºè¡¨ã¯BINDä½œè€…ã§ã‚ã‚‹Paul Vixieæ°ã«ã‚ˆã£ã¦è¡Œã‚ã‚Œã¾ã—ãŸãŒã€æœ€åˆã®ä¸€æ–‡ãŒã€Œæ–°ã—ã„ãƒ‰ãƒ¡ã‚¤ãƒ³åã®å¤§åŠã¯æ‚ªæ„ã®ã‚ã‚‹ã‚‚ã®ã ã€ã¨ã„ã†ã‚‚ã®ã§ã—ãŸã€‚ çŠ¯ç½ªç›®çš„ã§å–å¾—ã•ã‚ŒãŸãƒ‰ãƒ¡ã‚¤ãƒ³åãŒã‚ã¾ã‚Šã«å¤šã„ã“ã¨ã‚’å˜†ãã¤ã¤ã€ISC BINDã«DNSãƒ–ãƒãƒƒã‚ãƒ³ã‚°æ©Ÿèƒ½ã‚’å®Ÿè£…ã—ãŸã“ã¨ã‚’å ±å‘Šã—ã¦ã„ã¾ã™ã€‚ ã€ŒTaking Back the DNS | Inter
teddy-g 2018/02/04
DNSãƒ–ãƒãƒƒã‚ãƒ³ã‚°ã®è‰¯ã—æ‚ªã—ã«ã¤ã„ã¦ã€‚ç„¡é—‡ã«ãƒ–ãƒãƒƒã‚¯ã™ã‚‹ã¨ãƒ›ã‚¹ãƒ†ã‚£ãƒ³ã‚°æ¥è€…ã¨ã‹ãŒNXDOMAINã§è¿”ã‚‹ã€‚

dns

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Google Public DNS over HTTPS ã‚’è©¦ã™ | IIJ Engineers Blog
ã€2018/11/16 è¿½è¨˜ã€‘ æœ¬è¨˜äº‹ã¯ã€2016 å¹´ 4 æœˆã« Google Public DNS ã‚µãƒ¼ãƒã«å®Ÿè£…ã•ã‚ŒãŸã€å®Ÿé¨“çš„ãª DNS over HTTPS ãƒ—ãƒãƒˆã‚³ãƒ«ã«ã¤ã„ã¦ç´¹ä»‹ã—ã¦ã„ã¾ã™ã€‚DNS over HTTPS ãƒ—ãƒãƒˆã‚³ãƒ«ã¯ãã®å¾Œ IETF ã® doh ãƒ¯ãƒ¼ã‚ãƒ³ã‚°ã‚°ãƒ«ãƒ¼ãƒ—ã«ã¦æ¨™æº–åŒ–ãŒé€²ã‚ã‚‰ã‚Œã€2å¹´åŠå¾Œã® 2018 å¹´ 10 æœˆã« RFC8484 ã¨ã—ã¦å‡ºç‰ˆã•ã‚Œã¾ã—ãŸã€‚æœ¬è¨˜äº‹ã§ç´¹ä»‹ã—ãŸãƒ—ãƒãƒˆã‚³ãƒ«ã¯ RFC8484 ã«è¦å®šã•ã‚ŒãŸãƒ—ãƒãƒˆã‚³ãƒ«ã¨ã¯ã„ãã¤ã‚‚ã®ç‚¹ã§ç•°ãªã£ã¦ã„ã‚‹ã“ã¨ã«ã”æ³¨æ„ãã ã•ã„ã€‚ Google Inc. ãŒå…¬é–‹ DNS ã‚µãƒ¼ãƒã‚’é‹å–¶ã—ã¦ã„ã‚‹ã“ã¨ã¯ã”å˜çŸ¥ã§ã—ã‚‡ã†ã‹? Google Public DNS ã¨å‘¼ã°ã‚Œã‚‹ã“ã®å…¬é–‹ DNS ã‚µãƒ¼ãƒã¯ã€â€8.8.8.8â€³ ã¨ã„ã†ç‰¹å¾´çš„ãª IP ã‚¢ãƒ‰ãƒ¬ã‚¹ã§å…¨ä¸–ç•Œã®ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆãƒ¦ãƒ¼ã‚¶ã«å¯¾ã—ã¦ç„¡æ–™ã® DNS ã‚µãƒ¼ãƒ(ãƒ•ãƒ«ãƒ¬ã‚¾ãƒ«ãƒ)ã‚’æä¾›ã—
teddy-g 2017/04/16
Google Public DNSãŒDNS over HTTPSã‚’æä¾›ã—ã¦ã‚‹ã€‚ã‚ãƒ£ãƒƒã‚·ãƒ¥ã‚’ä½•ã¨ã‹ã™ã‚Œã° ã‹ãªã‚Šé€Ÿã„ã‚‰ã—ã„ã€‚

dns

network

https

cybersecurity

security
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â—†ã€€DNSã¨ã¯ DNS ( Domain Name System ) ã¯ã€ãƒ‰ãƒ¡ã‚¤ãƒ³åï¼ˆã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã‚’è˜åˆ¥ã™ã‚‹åç§°ï¼‰ã‚’IPã‚¢ãƒ‰ãƒ¬ã‚¹ã«è‡ªå‹•çš„ã« å¤‰æ›ã—ã¦ãã‚Œã‚‹ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³å±¤ãƒ—ãƒãƒˆã‚³ãƒ«ã§ã™ã€‚DNSã®ä»•çµ„ã¿ã«ã‚ˆã‚Šã€è¦šãˆã«ãã„IPã‚¢ãƒ‰ãƒ¬ã‚¹ã§ã¯ãªã ãƒãƒ¼ãƒžå—ã§URLã‚’å…¥åŠ›ã—Webã‚¢ã‚¯ã‚»ã‚¹ã—ãŸã‚Šã€ãƒãƒ¼ãƒžå—ã§ãƒ¡ãƒ¼ãƒ«ã‚¢ãƒ‰ãƒ¬ã‚¹ã‚’å…¥åŠ›ã—ã¦ãƒ¡ãƒ¼ãƒ«é€ä¿¡ãŒã§ãã¾ã™ã€‚ DNSã®ä»•çµ„ã¿ãŒãªã„ã¨ã€ä¾‹ãˆã°Yahooã®Webã‚µãƒ¼ãƒã«ã‚¢ã‚¯ã‚»ã‚¹ã™ã‚‹ãŸã‚ã« https://www.yahoo.co.jp/ ã¨ å…¥åŠ›ã™ã‚‹ã®ã§ã¯ãªãã€Œhttps://192.168.100.212ã€ã®ã‚ˆã†ã«IPã‚’å…¥åŠ›ã—ã‚¢ã‚¯ã‚»ã‚¹ã™ã‚‹ã“ã¨ãŒå¿…è¦ã«ãªã‚Šã¾ã™ã€‚ â—†ã€€ãƒ‰ãƒ¡ã‚¤ãƒ³åã®æ§‹é€ DNSã¯ãƒ‰ãƒ¡ã‚¤ãƒ³åã‚’IPã‚¢ãƒ‰ãƒ¬ã‚¹ã«å¤‰æ›ã—ã¦ãã‚Œã‚‹ã®ã§ã™ãŒã€å…ˆãšãã®ãƒ‰ãƒ¡ã‚¤ãƒ³åã®æ§‹é€ ã«ã¤ã„ã¦è§£èª¬ã—ã¾ã™ã€‚ ãƒ‰ãƒ¡ã‚¤ãƒ³åã¯ã€ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã‚’è˜åˆ¥ã™ã‚‹åç§°ã®ã“ã¨ã§ã™ã€‚ãƒ‰ãƒ¡ã‚¤ãƒ³åã¯ãƒ›ã‚¹ãƒˆåã‚„
teddy-g 2017/04/16
DNSã®åŸºæœ¬çš„ãªä»•çµ„ã¿ã€‚åå‰è§£æ±ºã¯UDPä½¿ã†ã€‚

dns

network
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DNS ampæ”»æ’ƒã§ã¯ã€ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã‹ã‚‰ã‚¢ã‚¯ã‚»ã‚¹å¯èƒ½ãªDNSã‚ãƒ£ãƒƒã‚·ãƒ¥ãƒ»ã‚µãƒ¼ãƒã‚’è¸ã¿å°ã«ã—ã¦DDoSæ”»æ’ƒã‚’ä»•æŽ›ã‘ã‚‹ã€‚è¸ã¿å°ã¨ã—ã¦åˆ©ç”¨ã•ã‚Œãªã„ãŸã‚ã«ã¯ã€ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã‹ã‚‰ã‚ãƒ£ãƒƒã‚·ãƒ¥ãƒ»ã‚µãƒ¼ãƒãŒåˆ©ç”¨ã§ããªã„ã‚ˆã†ã«ã™ã‚‹ã€‚ãã‚Œã«ã¯ã‚¢ã‚¯ã‚»ã‚¹åˆ¶å¾¡ã‚’è¡Œã†ã‹ã€ã‚³ãƒ³ãƒ†ãƒ³ãƒ„ãƒ»ã‚µãƒ¼ãƒã¨åˆ†é›¢ã—ã¦é‹ç”¨ã™ã‚‹ã€‚ è§£èª¬ â—DNSã‚µãƒ¼ãƒ“ã‚¹ã‚’ä½¿ã£ãŸåˆ†æ•£ã‚µãƒ¼ãƒ“ã‚¹æ‹’å¦æ”»æ’ƒã€ã€ŒDNS ampã€ã®ç™ºç”ŸãŒæ‡¸å¿µ ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆä¸Šã§ã®åå‰è§£æ±ºã‚µãƒ¼ãƒ“ã‚¹ã‚’æä¾›ã™ã‚‹DNSã¯ã€ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã«ãŠã‘ã‚‹éžå¸¸ã«åŸºæœ¬çš„ãªã‚µãƒ¼ãƒ“ã‚¹ã§ã‚ã‚‹ãŒã€ã“ã‚Œã‚’åˆ©ç”¨ã—ãŸå¤§è¦æ¨¡ãªåˆ†æ•£ã‚µãƒ¼ãƒ“ã‚¹æ‹’å¦æ”»æ’ƒï¼ˆDDoSæ”»æ’ƒï¼‰ã®ç™ºç”ŸãŒæ‡¸å¿µã•ã‚Œã¦ã„ã‚‹ã€‚ç´°å·¥ã—ãŸDNSè¦æ±‚ã‚’BOTï¼ˆæ”»æ’ƒã‚’è¡Œã†ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ï¼‰ã«é€ã‚‹ã¨ã€å¯¾ç–ã®æ–½ã•ã‚Œã¦ã„ãªã„DNSã‚µãƒ¼ãƒã‚’â€œè¸ã¿å°ï¼ˆæ”»æ’ƒã®è¶³ãŒã‹ã‚Šï¼‰â€ã«ã—ã¦ã€æ”»æ’ƒå¯¾è±¡ã«å¤§é‡ã®DNSãƒ‘ã‚±ãƒƒãƒˆãŒé€ä¿¡ã•ã‚Œã‚‹ã€‚ã“ã‚Œã«ã‚ˆã‚Šã€å‡¦ç†èƒ½åŠ›ã‚„ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯å›žç·šãŒæ··é›‘ã€é£½å’Œã—ã€æ£å¸¸ãªåˆ©ç”¨
teddy-g 2017/04/15
DNS ampæˆ–ã„ã¯DNSãƒªãƒ•ãƒ¬ã‚¯ã‚¿ãƒ¼æ”»æ’ƒã€‚å•åˆã›å…ƒIPã‚’æ”»æ’ƒå…ˆIPã«å½è£…ã—ã¦ãƒªã‚¯ã‚¨ã‚¹ãƒˆã™ã‚‹ã¨ãƒ¬ã‚¹ãƒãƒ³ã‚¹ã§æ”»æ’ƒã§ãã‚‹ã€‚ã‚ªãƒ¼ãƒ—ãƒ³ãƒªã‚¾ãƒ«ãƒã®ãƒã‚§ãƒƒã‚¯æ–¹æ³•ã‚‚èª¬æ˜Žã‚ã‚Šã€‚

cybersecurity

dns
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teddy-g 2017/04/15
å˜åœ¨ã—ãªã„ã‚µãƒ–ãƒ‰ãƒ¡ã‚¤ãƒ³ã‚’ä»˜è¨˜ã—ã¦ã‚ãƒ£ãƒƒã‚·ãƒ¥ã‚µãƒ¼ãƒã«å•ã„åˆã‚ã›ã•ã›ã€å¿œç”ã‚’å½è£…ã™ã‚‹ã®ãŒKaminsky Attackã€‚

cybersecurity

dns
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