{"id":34579,"date":"2026-01-16T10:53:44","date_gmt":"2026-01-16T03:53:44","guid":{"rendered":"https:\/\/www.fiahub.com\/blog\/?p=34579"},"modified":"2026-01-16T10:53:44","modified_gmt":"2026-01-16T03:53:44","slug":"phat-hien-ma-doc-deadlock-tru-an-trong-smart-contract-cua-polygon","status":"publish","type":"post","link":"https:\/\/www.fiahub.com\/blog\/phat-hien-ma-doc-deadlock-tru-an-trong-smart-contract-cua-polygon\/","title":{"rendered":"Ph\u00e1t hi\u1ec7n m\u00e3 \u0111\u1ed9c DeadLock &#8220;tr\u00fa \u1ea9n&#8221; trong smart contract c\u1ee7a Polygon"},"content":{"rendered":"<p data-path-to-node=\"5\"><strong>Trong m\u1ed9t b\u00e1o c\u00e1o m\u1edbi nh\u1ea5t t\u1eeb c\u00f4ng ty an ninh m\u1ea1ng Group-IB, m\u1ed9t lo\u1ea1i ransomware m\u1edbi c\u00f3 t\u00ean g\u1ecdi &#8220;DeadLock&#8221; \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n \u0111ang s\u1eed d\u1ee5ng c\u00e1c h\u1ee3p \u0111\u1ed3ng th\u00f4ng minh (smart contract) tr\u00ean m\u1ea1ng l\u01b0\u1edbi Polygon \u0111\u1ec3 v\u1eadn h\u00e0nh h\u1ea1 t\u1ea7ng \u0111i\u1ec1u khi\u1ec3n. \u0110\u00e2y \u0111\u01b0\u1ee3c xem l\u00e0 m\u1ed9t b\u01b0\u1edbc ti\u1ebfn \u0111\u00e1ng lo ng\u1ea1i trong k\u1ef9 thu\u1eadt t\u1ea5n c\u00f4ng m\u1ea1ng, khi t\u1ed9i ph\u1ea1m l\u1ea1m d\u1ee5ng t\u00ednh ch\u1ea5t phi t\u1eadp trung c\u1ee7a blockchain \u0111\u1ec3 v\u00f4 hi\u1ec7u h\u00f3a c\u00e1c n\u1ed7 l\u1ef1c ng\u0103n ch\u1eb7n t\u1eeb c\u01a1 quan ch\u1ee9c n\u0103ng.<\/strong><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed9i dung b\u00e0i vi\u1ebft<\/p>\n<\/div><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.fiahub.com\/blog\/phat-hien-ma-doc-deadlock-tru-an-trong-smart-contract-cua-polygon\/#DeadLock_Ke_tan_cong_tham_lang_nhung_day_tinh_vi\" >DeadLock: K\u1ebb t\u1ea5n c\u00f4ng th\u1ea7m l\u1eb7ng nh\u01b0ng \u0111\u1ea7y tinh vi<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.fiahub.com\/blog\/phat-hien-ma-doc-deadlock-tru-an-trong-smart-contract-cua-polygon\/#Smart_Contract_tro_thanh_%E2%80%9CLa_chan%E2%80%9D_cho_ma_doc\" >Smart Contract tr\u1edf th\u00e0nh &#8220;L\u00e1 ch\u1eafn&#8221; cho m\u00e3 \u0111\u1ed9c<\/a><\/li><\/ul><\/nav><\/div>\n<h2 data-path-to-node=\"6\"><span class=\"ez-toc-section\" id=\"DeadLock_Ke_tan_cong_tham_lang_nhung_day_tinh_vi\"><\/span>DeadLock: K\u1ebb t\u1ea5n c\u00f4ng th\u1ea7m l\u1eb7ng nh\u01b0ng \u0111\u1ea7y tinh vi<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-path-to-node=\"7\">M\u1eb7c d\u00f9 m\u1edbi \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n l\u1ea7n \u0111\u1ea7u v\u00e0o th\u00e1ng 7, <a href=\"https:\/\/www.fiahub.com\/blog\/22344-2\/\" target=\"_blank\" rel=\"noopener\">ransomware<\/a> DeadLock hi\u1ec7n v\u1eabn \u0111\u01b0\u1ee3c x\u1ebfp v\u00e0o nh\u00f3m &#8220;\u00edt b\u1ecb nh\u1eadn di\u1ec7n&#8221;. Kh\u00e1c v\u1edbi c\u00e1c nh\u00f3m ransomware \u0111\u00ecnh \u0111\u00e1m th\u01b0\u1eddng r\u00f2 r\u1ec9 d\u1eef li\u1ec7u n\u1ea1n nh\u00e2n tr\u00ean c\u00e1c trang web chuy\u00ean bi\u1ec7t ho\u1eb7c c\u00f3 ch\u01b0\u01a1ng tr\u00ecnh ti\u1ebfp th\u1ecb li\u00ean k\u1ebft r\u1ea7m r\u1ed9, DeadLock ho\u1ea1t \u0111\u1ed9ng k\u00edn ti\u1ebfng v\u1edbi s\u1ed1 l\u01b0\u1ee3ng n\u1ea1n nh\u00e2n \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o c\u00f2n h\u1ea1n ch\u1ebf.<\/p>\n<figure id=\"attachment_34581\" aria-describedby=\"caption-attachment-34581\" style=\"width: 1014px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-34581\" src=\"https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2026\/01\/deadlock.jpg\" alt=\"\" width=\"1014\" height=\"469\" srcset=\"https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2026\/01\/deadlock.jpg 1014w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2026\/01\/deadlock-300x139.jpg 300w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2026\/01\/deadlock-150x69.jpg 150w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2026\/01\/deadlock-768x355.jpg 768w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2026\/01\/deadlock-450x208.jpg 450w\" sizes=\"(max-width: 1014px) 100vw, 1014px\" \/><figcaption id=\"caption-attachment-34581\" class=\"wp-caption-text\">T\u1ec7p HTML c\u00f3 nh\u00fang tr\u00ecnh nh\u1eafn tin ri\u00eang Session \u0111\u1ec3 li\u00ean h\u1ec7 v\u1edbi k\u1ebb t\u1ea5n c\u00f4ng | Ngu\u1ed3n: Group-IB<\/figcaption><\/figure>\n<p data-path-to-node=\"8\">Tuy nhi\u00ean, c\u00e1c chuy\u00ean gia t\u1ea1i Group-IB c\u1ea3nh b\u00e1o r\u1eb1ng s\u1ef1 &#8220;k\u00edn ti\u1ebfng&#8221; n\u00e0y kh\u00f4ng \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c n\u00f3 \u00edt nguy hi\u1ec3m. Ng\u01b0\u1ee3c l\u1ea1i, DeadLock s\u1eed d\u1ee5ng nh\u1eefng ph\u01b0\u01a1ng th\u1ee9c mang t\u00ednh \u0111\u1ed9t ph\u00e1 m\u00e0 c\u00e1c t\u1ed5 ch\u1ee9c kh\u00f4ng n\u00ean xem nh\u1eb9, \u0111\u1eb7c bi\u1ec7t l\u00e0 khi vi\u1ec7c l\u1ea1m d\u1ee5ng m\u1ea1ng l\u01b0\u1edbi <a href=\"https:\/\/www.fiahub.com\/blog\/polygon-matic-la-gi\/\" target=\"_blank\" rel=\"noopener\">Polygon<\/a> cho m\u1ee5c \u0111\u00edch ph\u00e1t t\u00e1n m\u00e3 \u0111\u1ed9c v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o r\u1ed9ng r\u00e3i tr\u01b0\u1edbc \u0111\u00e2y.<\/p>\n<h2 data-path-to-node=\"9\"><span class=\"ez-toc-section\" id=\"Smart_Contract_tro_thanh_%E2%80%9CLa_chan%E2%80%9D_cho_ma_doc\"><\/span>Smart Contract tr\u1edf th\u00e0nh &#8220;L\u00e1 ch\u1eafn&#8221; cho m\u00e3 \u0111\u1ed9c<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-path-to-node=\"10\">\u0110i\u1ec3m \u0111\u1eb7c bi\u1ec7t nh\u1ea5t c\u1ee7a DeadLock n\u1eb1m \u1edf c\u00e1ch n\u00f3 duy tr\u00ec s\u1ef1 li\u00ean l\u1ea1c v\u1edbi n\u1ea1n nh\u00e2n. Thay v\u00ec s\u1eed d\u1ee5ng c\u00e1c m\u00e1y ch\u1ee7 \u0111i\u1ec1u khi\u1ec3n (Command-and-Control &#8211; C2) t\u1eadp trung v\u1ed1n d\u1ec5 b\u1ecb c\u00e1c c\u01a1 quan an ninh \u0111\u00e1nh s\u1eadp, DeadLock t\u1eadn d\u1ee5ng kh\u1ea3 n\u0103ng c\u1ee7a smart contract tr\u00ean Polygon \u0111\u1ec3 l\u01b0u tr\u1eef v\u00e0 xoay v\u00f2ng c\u00e1c \u0111\u1ecba ch\u1ec9 m\u00e1y ch\u1ee7 proxy.<\/p>\n<p data-path-to-node=\"11\">Quy tr\u00ecnh t\u1ea5n c\u00f4ng di\u1ec5n ra nh\u01b0 sau:<\/p>\n<ol start=\"1\" data-path-to-node=\"12\">\n<li>\n<p data-path-to-node=\"12,0,0\">M\u00e3 h\u00f3a d\u1eef li\u1ec7u: Sau khi x\u00e2m nh\u1eadp th\u00e0nh c\u00f4ng v\u00e0o h\u1ec7 th\u1ed1ng c\u1ee7a n\u1ea1n nh\u00e2n, DeadLock ti\u1ebfn h\u00e0nh m\u00e3 h\u00f3a d\u1eef li\u1ec7u v\u00e0 \u0111\u1ec3 l\u1ea1i th\u00f4ng b\u00e1o \u0111\u00f2i ti\u1ec1n chu\u1ed9c, \u0111e d\u1ecda s\u1ebd b\u00e1n d\u1eef li\u1ec7u n\u1ebfu y\u00eau c\u1ea7u kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"12,1,0\">T\u01b0\u01a1ng t\u00e1c On-chain: M\u00e3 \u0111\u1ed9c \u0111\u01b0\u1ee3c nh\u00fang trong ph\u1ea7n m\u1ec1m ransomware s\u1ebd t\u01b0\u01a1ng t\u00e1c v\u1edbi m\u1ed9t \u0111\u1ecba ch\u1ec9 smart contract c\u1ee5 th\u1ec3 tr\u00ean Polygon.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"12,2,0\">C\u1eadp nh\u1eadt h\u1ea1 t\u1ea7ng \u0111\u1ed9ng: Th\u00f4ng qua m\u1ed9t h\u00e0m trong smart contract, nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 c\u1eadp nh\u1eadt \u0111\u1ed9ng c\u00e1c \u0111\u1ecba ch\u1ec9 proxy m\u1edbi. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p m\u00e3 \u0111\u1ed9c li\u00ean t\u1ee5c thay \u0111\u1ed5i \u0111i\u1ec3m li\u00ean l\u1ea1c v\u1edbi m\u00e1y ch\u1ee7 C2, gi\u00fap ch\u00fang lu\u00f4n \u0111i tr\u01b0\u1edbc c\u00e1c bi\u1ec7n ph\u00e1p ch\u1eb7n IP ho\u1eb7c t\u00ean mi\u1ec1n t\u1eeb ph\u00eda b\u1ea3o m\u1eadt.<\/p>\n<\/li>\n<\/ol>\n<p data-path-to-node=\"14\">Theo Group-IB, vi\u1ec7c l\u01b0u tr\u1eef \u0111\u1ecba ch\u1ec9 proxy on-chain t\u1ea1o ra m\u1ed9t h\u1ea1 t\u1ea7ng c\u1ef1c k\u1ef3 kh\u00f3 b\u1ecb ph\u00e1 v\u1ee1. Do blockchain c\u00f3 t\u00ednh phi t\u1eadp trung v\u00e0 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef v\u0129nh vi\u1ec5n tr\u00ean c\u00e1c node tr\u00ean to\u00e0n th\u1ebf gi\u1edbi, kh\u00f4ng c\u00f3 m\u1ed9t m\u00e1y ch\u1ee7 trung t\u00e2m n\u00e0o \u0111\u1ec3 c\u00e1c c\u01a1 quan ch\u1ee9c n\u0103ng c\u00f3 th\u1ec3 &#8220;t\u1ecbch thu&#8221; hay \u0111\u00f3ng c\u1eeda.<\/p>\n<blockquote>\n<p data-path-to-node=\"15\"><i data-path-to-node=\"15\" data-index-in-node=\"0\">&#8220;Vi\u1ec7c khai th\u00e1c smart contract \u0111\u1ec3 cung c\u1ea5p \u0111\u1ecba ch\u1ec9 proxy l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p th\u00fa v\u1ecb. Nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng v\u00f4 s\u1ed1 bi\u1ebfn th\u1ec3 c\u1ee7a k\u1ef9 thu\u1eadt n\u00e0y; gi\u1edbi h\u1ea1n duy nh\u1ea5t ch\u1ec9 l\u00e0 tr\u00ed t\u01b0\u1edfng t\u01b0\u1ee3ng c\u1ee7a ch\u00fang,&#8221;<\/i> \u0111\u1ea1i di\u1ec7n Group-IB nh\u1eadn \u0111\u1ecbnh.<\/p>\n<\/blockquote>\n<p data-path-to-node=\"17\">Th\u1ef1c t\u1ebf, vi\u1ec7c v\u0169 kh\u00ed h\u00f3a smart contract kh\u00f4ng ho\u00e0n to\u00e0n m\u1edbi. Group-IB \u0111\u00e3 d\u1eabn chi\u1ebfu \u0111\u1ebfn m\u1ed9t k\u1ef9 thu\u1eadt t\u01b0\u01a1ng t\u1ef1 c\u00f3 t\u00ean l\u00e0 &#8220;EtherHiding&#8221; t\u1eebng \u0111\u01b0\u1ee3c Google b\u00e1o c\u00e1o v\u00e0o th\u00e1ng 10 n\u0103m ngo\u00e1i.<\/p>\n<p data-path-to-node=\"18\">Trong \u0111\u00f3, nh\u00f3m tin t\u1eb7c kh\u00e9t ti\u1ebfng &#8220;UNC5342&#8221; (\u0111\u01b0\u1ee3c cho l\u00e0 c\u00f3 li\u00ean quan \u0111\u1ebfn Tri\u1ec1u Ti\u00ean) \u0111\u00e3 s\u1eed d\u1ee5ng ph\u01b0\u01a1ng th\u1ee9c n\u00e0y \u0111\u1ec3 l\u01b0u tr\u1eef v\u00e0 truy xu\u1ea5t c\u00e1c t\u1ec7p tin \u0111\u1ed9c h\u1ea1i th\u00f4ng qua c\u00e1c giao d\u1ecbch tr\u00ean blockchain c\u00f4ng khai. K\u1ef9 thu\u1eadt EtherHiding th\u01b0\u1eddng nh\u00fang c\u00e1c m\u00e3 JavaScript \u0111\u1ed9c h\u1ea1i v\u00e0o smart contract, bi\u1ebfn blockchain th\u00e0nh m\u1ed9t m\u00e1y ch\u1ee7 C2 phi t\u1eadp trung v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i c\u1ef1c cao.<\/p>\n<p data-path-to-node=\"20\">S\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a DeadLock tr\u00ean m\u1ea1ng l\u01b0\u1edbi Polygon l\u00e0 m\u1ed9t l\u1eddi nh\u1eafc nh\u1edf s\u1eafc b\u00e9n r\u1eb1ng c\u00e1c giao th\u1ee9c blockchain t\u1ed1c \u0111\u1ed9 cao v\u00e0 chi ph\u00ed th\u1ea5p \u0111ang tr\u1edf th\u00e0nh m\u1ee5c ti\u00eau l\u00fd t\u01b0\u1edfng kh\u00f4ng ch\u1ec9 cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n \u1ee9ng d\u1ee5ng h\u1ee3p ph\u00e1p m\u00e0 c\u00f2n cho c\u1ea3 t\u1ed9i ph\u1ea1m m\u1ea1ng.<\/p>\n<p data-path-to-node=\"21\">Vi\u1ec7c t\u1eadn d\u1ee5ng smart contract \u0111\u1ec3 \u1ea9n danh h\u1ea1 t\u1ea7ng cho th\u1ea5y m\u1ed9t s\u1ef1 thay \u0111\u1ed5i trong t\u01b0 duy c\u1ee7a t\u1ed9i ph\u1ea1m ransomware: ch\u00fang kh\u00f4ng c\u00f2n ch\u1ec9 t\u1eadp trung v\u00e0o vi\u1ec7c nh\u1eadn thanh to\u00e1n b\u1eb1ng crypto, m\u00e0 c\u00f2n \u0111ang t\u00edch h\u1ee3p s\u00e2u c\u00f4ng ngh\u1ec7 blockchain v\u00e0o ch\u00ednh quy tr\u00ecnh v\u1eadn h\u00e0nh m\u00e3 \u0111\u1ed9c \u0111\u1ec3 \u0111\u1ed1i ph\u00f3 v\u1edbi c\u00e1c bi\u1ec7n ph\u00e1p an ninh truy\u1ec1n th\u1ed1ng. \u0110\u00e2y l\u00e0 m\u1ed9t th\u00e1ch th\u1ee9c l\u1edbn \u0111\u00f2i h\u1ecfi s\u1ef1 ph\u1ed1i h\u1ee3p ch\u1eb7t ch\u1ebd h\u01a1n gi\u1eefa c\u00e1c \u0111\u01a1n v\u1ecb an ninh m\u1ea1ng v\u00e0 c\u00e1c th\u1ef1c th\u1ec3 qu\u1ea3n l\u00fd h\u1ea1 t\u1ea7ng blockchain trong t\u01b0\u01a1ng lai.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trong m\u1ed9t b\u00e1o c\u00e1o m\u1edbi nh\u1ea5t t\u1eeb c\u00f4ng ty an ninh m\u1ea1ng Group-IB, m\u1ed9t lo\u1ea1i ransomware m\u1edbi c\u00f3 t\u00ean g\u1ecdi &#8220;DeadLock&#8221; \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n \u0111ang s\u1eed d\u1ee5ng c\u00e1c h\u1ee3p \u0111\u1ed3ng th\u00f4ng minh (smart contract) tr\u00ean m\u1ea1ng l\u01b0\u1edbi Polygon \u0111\u1ec3 v\u1eadn h\u00e0nh h\u1ea1 t\u1ea7ng \u0111i\u1ec1u khi\u1ec3n. \u0110\u00e2y \u0111\u01b0\u1ee3c xem l\u00e0 m\u1ed9t b\u01b0\u1edbc ti\u1ebfn \u0111\u00e1ng lo<\/p>\n","protected":false},"author":34,"featured_media":34580,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21841],"tags":[3167,17955],"class_list":{"0":"post-34579","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-tin-tuc","8":"tag-hack","9":"tag-polygon"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.0 (Yoast SEO v26.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>M\u00e3 \u0111\u1ed9c DeadLock \u1ea9n m\u00ecnh trong smart contract Polygon - Fiahub<\/title>\n<meta name=\"description\" content=\"Group-IB c\u1ea3nh b\u00e1o ransomware DeadLock l\u1ee3i d\u1ee5ng smart contract Polygon \u0111\u1ec3 che gi\u1ea5u h\u1ea1 t\u1ea7ng, khi\u1ebfn vi\u1ec7c ng\u0103n ch\u1eb7n tr\u1edf n\u00ean c\u1ef1c k\u1ef3 kh\u00f3 kh\u0103n\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.fiahub.com\/blog\/phat-hien-ma-doc-deadlock-tru-an-trong-smart-contract-cua-polygon\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ph\u00e1t hi\u1ec7n m\u00e3 \u0111\u1ed9c DeadLock &quot;tr\u00fa \u1ea9n&quot; 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