{"id":12550,"date":"2025-10-20T12:30:20","date_gmt":"2025-10-20T12:30:20","guid":{"rendered":"https:\/\/icobench.com\/fr\/?p=12550"},"modified":"2025-12-02T16:16:44","modified_gmt":"2025-12-02T16:16:44","slug":"malware-blockchain-hackeurs-nord-coreens","status":"publish","type":"post","link":"https:\/\/icobench.com\/fr\/news\/malware-blockchain-hackeurs-nord-coreens\/","title":{"rendered":"Malware sur la blockchain, les hackeurs nord-cor\u00e9ens \u00e0 l&rsquo;\u0153uvre"},"content":{"rendered":"<p>La blockchain est cens\u00e9e \u00eatre <strong>immuable, transparente et d\u00e9centralis\u00e9e<\/strong>. Ce caract\u00e8re transparent ne doit toutefois pas faire croire \u00e0 une s\u00e9curit\u00e9 absolue. Un rapport r\u00e9cent de Google a mis en lumi\u00e8re la pr\u00e9sence de <strong>codes malicieux dissimul\u00e9s sur la blockchain<\/strong>.<\/p>\n<p>Un nouveau type de menace qui vise l\u2019industrie crypto et qui annonce d\u00e9j\u00e0 ce <strong>\u00e0 quoi pourrait ressembler l\u2019avenir de la s\u00e9curit\u00e9 cryptographique<\/strong>.<\/p>\n<h2><span id=\"etherhiding_un_nouveau_type_de_menace_web3\">EtherHiding, un nouveau type de menace Web3<\/span><\/h2>\n<p>La technique <strong>EtherHiding<\/strong> n\u2019est pas tout \u00e0 fait nouvelle. Cette pratique consiste \u00e0 utiliser la blockchain pour distribuer des donn\u00e9es. Plus sp\u00e9cifiquement, elle permet de <strong>d\u00e9ployer du code malicieux dans des contrats intelligents<\/strong>.<\/p>\n<p>C\u2019\u00e9tait d\u00e9j\u00e0 le cas en juillet avec du <a href=\"https:\/\/icobench.com\/fr\/news\/hackers-malwares-ethereum\/\" rel=\"\">malware cach\u00e9 sur Ethereum<\/a> gr\u00e2ce \u00e0 des contrats intelligents d\u00e9tourn\u00e9s. La <a href=\"https:\/\/cloud.google.com\/blog\/topics\/threat-intelligence\/dprk-adopts-etherhiding?hl=en\" target=\"_blank\" rel=\"noopener noreferrer\">trouvaille r\u00e9cente par Mandiant<\/a> d\u00e9montre que la pratique s\u2019est \u00e9tendue \u00e0 d\u2019autres blockchains, notamment \u00e0 BNB Smart Chain.<\/p>\n<p>Ce qui rend <strong>EtherHiding<\/strong> catastrophique, c\u2019est qu\u2019il permet de stocker toutes les composantes du malware sur la blockchain. Sp\u00e9cifiquement, le <strong>protocole d\u2019infection<\/strong>, la <strong>charge utile<\/strong> et le <strong>centre de commande et de contr\u00f4le<\/strong>.<\/p>\n<p>En proc\u00e9dant ainsi, les outils de d\u00e9tection habituels n\u2019identifient pas la menace. Apr\u00e8s tout, <strong>tous les appels et ex\u00e9cutions du code sont restreints \u00e0 la blockchain<\/strong> et ne renvoient \u00e0 aucune adresse URL externe. Et surtout, l\u2019ex\u00e9cution en mode \u201clecture seule\u201d permet de <strong>limiter les traces d\u2019activit\u00e9 sur la blockchain<\/strong>.<\/p>\n<figure id=\"attachment_12552\" aria-describedby=\"caption-attachment-12552\" style=\"width: 1200px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-12552\" src=\"https:\/\/icobench.com\/fr\/wp-content\/uploads\/sites\/5\/2025\/10\/@jsrailton-EtherHiding-DPRK.jpg\" alt=\"@jsrailton - EtherHiding DPRK\" width=\"1200\" height=\"600\" srcset=\"https:\/\/icobench.com\/fr\/wp-content\/uploads\/sites\/5\/2025\/10\/@jsrailton-EtherHiding-DPRK.jpg 1200w, https:\/\/icobench.com\/fr\/wp-content\/uploads\/sites\/5\/2025\/10\/@jsrailton-EtherHiding-DPRK-300x150.jpg 300w, https:\/\/icobench.com\/fr\/wp-content\/uploads\/sites\/5\/2025\/10\/@jsrailton-EtherHiding-DPRK-1024x512.jpg 1024w, https:\/\/icobench.com\/fr\/wp-content\/uploads\/sites\/5\/2025\/10\/@jsrailton-EtherHiding-DPRK-768x384.jpg 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\"><figcaption id=\"caption-attachment-12552\" class=\"wp-caption-text\"><a href=\"https:\/\/x.com\/jsrailton\/status\/1979122900700713269\" target=\"_blank\" rel=\"noopener noreferrer\">Source : @jsrailton sur X<\/a><\/figcaption><\/figure>\n<h2><span id=\"contagious_interview_le_groupe_nord-coreen_qui_sevit\">\u201cContagious Interview\u201d : le groupe nord-cor\u00e9en qui s\u00e9vit<\/span><\/h2>\n<p>EtherHiding est une pratique d\u00e9j\u00e0 connue, mais relativement nouvelle. De fait, ses applications sont encore mal cern\u00e9es par les chercheurs en cybers\u00e9curit\u00e9. Les hackeurs nord-cor\u00e9ens semblent toutefois avoir r\u00e9alis\u00e9 <strong>des avanc\u00e9es consid\u00e9rables en la mati\u00e8re<\/strong>. En particulier, depuis que <a href=\"https:\/\/icobench.com\/fr\/news\/ia-audite-contrats-intelligents-pour-pirater\/\" rel=\"\">l\u2019IA permet d\u2019acc\u00e9l\u00e9rer l\u2019audit et l\u2019exploitation des vuln\u00e9rabilit\u00e9s on-chain<\/a>.<\/p>\n<p>En effet, ils introduisent du malware dans les contrats intelligents afin que ces derniers soient lus par les explorateurs de blockchain. Autrement dit, lorsque des utilisateurs se servent d\u2019explorateurs pour analyser des transactions ou des contrats intelligents, <strong>ils courent le risque d\u2019ex\u00e9cuter le code malicieux dans leurs navigateurs Internet<\/strong>.<\/p>\n<blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\">\n<p lang=\"en\" dir=\"ltr\">North Korea threat actor UNC5342 is using EtherHiding, the first time we have observed a nation-state use this technique. \ud83d\udea8<\/p>\n<p>The TTP is being used in a social engineering campaign that leads to cryptocurrency heists and espionage. <\/p>\n<p>Read the blog post: <a href=\"https:\/\/t.co\/JGnXcAQfoQ\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/t.co\/JGnXcAQfoQ<\/a> <a href=\"https:\/\/t.co\/qusToZHmK0\" target=\"_blank\" rel=\"noopener noreferrer\">pic.twitter.com\/qusToZHmK0<\/a><\/p>\n<p>\u2014 Mandiant (part of Google Cloud) (@Mandiant) <a href=\"https:\/\/twitter.com\/Mandiant\/status\/1979283778225725590?ref_src=twsrc%5Etfw\" target=\"_blank\" rel=\"noopener noreferrer\">October 17, 2025<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<p>Tout semble indiquer que c\u2019est la premi\u00e8re fois qu\u2019un acteur \u00e9tatique se sert de la blockchain ainsi. Le groupe de hackeurs d\u00e9nomm\u00e9 \u201c<strong>Contagious Interview<\/strong>\u201d, \u201c<strong>ClearFake<\/strong>\u201d ou <strong>UNC5342<\/strong> selon les sources, s\u2019en servirait actuellement pour s\u00e9vir sur <strong>BNB Smart Chain<\/strong>.<\/p>\n<p>D\u2019apr\u00e8s les enqu\u00eates des chercheurs en cybers\u00e9curit\u00e9, <a href=\"https:\/\/icobench.com\/fr\/news\/hackers-nord-coreens-vol-cryptos-2025\/\" rel=\"\">les hackeurs nord-cor\u00e9ens<\/a> s\u2019en servent essentiellement pour infecter des victimes dans le cadre de faux entretiens d\u2019embauche.<\/p>\n<h2><span id=\"des_maliciels_perennes_au_service_des_pirates\">Des maliciels p\u00e9rennes au service des pirates<\/span><\/h2>\n<p>Pour les pirates, dissimuler du code malicieux sur la blockchain pr\u00e9sente de nombreux avantages. D\u2019une part, il n\u2019y a <strong>pas de serveur central que les autorit\u00e9s peuvent cibler ou saisir<\/strong>. D\u2019autre part, le code peut \u00eatre <strong>mis-\u00e0-jour \u00e0 faible co\u00fbt<\/strong> par le propri\u00e9taire anonyme du contrat intelligent.<\/p>\n<p>En somme, ce type de <a href=\"https:\/\/icobench.com\/fr\/news\/approbation-caduque-vide-wallet-908-000\/\" rel=\"\">contrats malicieux<\/a> sur la blockchain devient <strong>un tremplin pour d\u00e9ployer des campagnes de grande envergure<\/strong>.<\/p>\n<p>\u00c0 premi\u00e8re vue, on peut s\u2019imaginer qu\u2019il suffit de bloquer ces contrats pour se pr\u00e9munir. Mais, ceci d\u00e9montre \u00e9galement que <strong>des contrats intelligents compromis peuvent \u00eatre d\u00e9tourn\u00e9s de la m\u00eame mani\u00e8re<\/strong>.<\/p>\n<p>De toute \u00e9vidence, la situation est un <strong>argument en faveur des blockchains plus restrictives<\/strong> qui n\u2019ont vocation qu\u2019\u00e0 supporter une cryptomonnaie. Ceci reviendrait toutefois \u00e0 <strong>abandonner les avanc\u00e9es en mati\u00e8re de DeFi<\/strong> et de <strong>blockchains polyvalentes<\/strong>.<\/p>\n<p>Mais surtout, la question se pose quant <strong>au principe d\u2019immutabilit\u00e9 de la blockchain<\/strong>. Ce principe est-il si pr\u00e9cieux qu\u2019il n\u2019est pas possible de retirer des maliciels apparents ?<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La blockchain est cens\u00e9e \u00eatre immuable, transparente et d\u00e9centralis\u00e9e. Ce caract\u00e8re transparent ne doit toutefois pas faire croire \u00e0&#8230;<\/p>\n","protected":false},"author":224,"featured_media":12551,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[7],"tags":[23],"class_list":["post-12550","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-cybercriminalite","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.8.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Malware sur la blockchain, les hackeurs nord-cor\u00e9ens \u00e0 l&#039;\u0153uvre<\/title>\n<meta name=\"description\" content=\"Les hackers nord-cor\u00e9ens utilisent d\u00e9sormais la blockchain pour dissimuler des portions de leurs codes malicieux\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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