{"id":21144,"date":"2025-09-04T17:00:54","date_gmt":"2025-09-04T17:00:54","guid":{"rendered":"https:\/\/www.criptofacil.com\/es\/?p=21144"},"modified":"2025-09-04T16:09:05","modified_gmt":"2025-09-04T16:09:05","slug":"cuidado-hackers-usan-contratos-inteligentes-de-ethereum-para-lanzar-un-nuevo-golpe","status":"publish","type":"post","link":"https:\/\/www.criptofacil.com\/es\/cuidado-hackers-usan-contratos-inteligentes-de-ethereum-para-lanzar-un-nuevo-golpe\/","title":{"rendered":"\u00a1Cuidado! Hackers usan contratos inteligentes de Ethereum para lanzar un nuevo golpe"},"content":{"rendered":"<p>Hackers est\u00e1n aplicando una <strong>nueva t\u00e1ctica de ataque contra protocolos utilizando contratos inteligentes de Ethereum.<\/strong> La estrategia consiste en <strong>aprovechar estos contratos para evadir la detecci\u00f3n en paquetes maliciosos de Node Package Manager (NPM).<\/strong> En otras palabras, se hacen pasar por aplicaciones leg\u00edtimas, usando la seguridad de la propia red.<\/p>\n<p>Seg\u00fan un art\u00edculo publicado por<a href=\"https:\/\/www.reversinglabs.com\/blog\/ethereum-contracts-malicious-code\"> ReversingLabs<\/a> el mi\u00e9rcoles (03), la campa\u00f1a de cadena de suministro de software malicioso utiliz\u00f3 c\u00f3digo para<strong> ocultar instrucciones de comando y control (C2)<\/strong> en paquetes de NPM. El atacante reemplaz\u00f3 el paquete \u201ccolortoolsv2\u201d por otro llamado \u201cmimelib2\u201d.<\/p>\n<p>Lucija Valentic, investigadora de ReversingLabs, explic\u00f3 que ambos paquetes ejecutaban un script ofuscado que consultaba un contrato de Ethereum. Ese script sirvi\u00f3 como punto de entrada para que los hackers crearan malwares capaces de <strong>infiltrarse en protocolos desarrollados sobre los contratos afectados.<\/strong><\/p>\n<p>Este m\u00e9todo de invasi\u00f3n puede sonar complejo, pero es deliberado. El objetivo, de acuerdo con Valentic, es <strong>dificultar la detecci\u00f3n y eliminaci\u00f3n del malware<\/strong>, estableciendo un nuevo tipo de vector de ataque. En lugar de atacar \u00fanicamente el protocolo, los hackers apuntan directamente al contrato que sirve como base de su creaci\u00f3n.<\/p>\n<p><img decoding=\"async\" class=\"size-full wp-image-330207\" src=\"https:\/\/www.criptofacil.com\/wp-content\/uploads\/2025\/09\/Screenshot-2025-09-04-at-09.03.31-scaled.png\" alt=\"Ataque.\" width=\"2560\" height=\"1049\" \/><\/p>\n<blockquote><p>\u201cEsto es algo que nunca hab\u00edamos visto antes\u201d, escribi\u00f3 Valentic en el informe.<\/p><\/blockquote>\n<p>La especialista se\u00f1al\u00f3 la rapidez con la que los <strong>actores de amenazas mejoran sus estrategias de evasi\u00f3n<\/strong>. La operaci\u00f3n tambi\u00e9n se apoy\u00f3 en <strong>repositorios falsos de GitHub<\/strong> con temas relacionados con criptomonedas y commits generados autom\u00e1ticamente.<\/p>\n<p>La t\u00e1ctica busca<strong> convencer a los desarrolladores de a\u00f1adir los paquetes como dependencias.<\/strong> Cada vez que esto ocurre, el malware obtiene acceso a un nuevo contrato inteligente y puede<strong> atacar otras aplicaciones.<\/strong><\/p>\n<ul>\n<li>Lee tambi\u00e9n: <a style=\"font-size: 16px;background-color: #ffffff\" href=\"https:\/\/www.criptofacil.com\/es\/bitcoin-hoy-04-09-2025-btc-cae-token-m-sigue-en-alza-y-meliuz-compra-9-bitcoins\/\">Bitcoin Hoy 04\/09\/2025: BTC cae, token M sigue en alza y M\u00e9liuz compra 9 Bitcoins<\/a><\/li>\n<\/ul>\n<h2>Primeras medidas contra el nuevo malware en Ethereum<\/h2>\n<p>Valentic afirm\u00f3 que ya se iniciaron acciones contra este ataque. Inform\u00f3 a los responsables de NPM, quienes <strong>eliminaron los c\u00f3digos infectados<\/strong>. Mientras tanto, ReversingLabs advirti\u00f3 que la campa\u00f1a apunta a <strong>difundir proyectos maliciosos<\/strong> <strong>en NPM y GitHub<\/strong>, presentados como bots de trading o supuestas herramientas cripto.<\/p>\n<blockquote><p>\u201cCuando decidimos investigar m\u00e1s a fondo los paquetes, encontramos evidencias de una campa\u00f1a mucho m\u00e1s amplia que se expandi\u00f3 tanto en NPM como en GitHub, intentando inducir a los desarrolladores a descargar repositorios con paquetes maliciosos\u201d, se\u00f1al\u00f3 Valentic.<\/p><\/blockquote>\n<p>Aunque la t\u00e1ctica inicial fue desactivada, no es el \u00fanico problema. Adem\u00e1s de los dos paquetes NPM publicados en julio, la empresa indic\u00f3 que los atacantes construyeron credibilidad alrededor de<strong> repositorios falsos en GitHub.<\/strong><\/p>\n<p>Uno de ellos fue<strong> \u201csolana-trading-bot-v2\u201d<\/strong>, que mostraba miles de comentarios superficiales, mantenedores ficticios y actividad coordinada de atacantes. El objetivo era atraer a usuarios para que descargaran el supuesto bot y, al hacerlo, <strong>dieran acceso a sus billeteras de criptomonedas.<\/strong><\/p>\n<p>ReversingLabs tambi\u00e9n hab\u00eda alertado a principios de este a\u00f1o sobre campa\u00f1as en NPM que<strong> abusaban de la confianza de los desarrolladores<\/strong> y de herramientas de c\u00f3digo abierto.<\/p>\n<blockquote><p>\u201cEstos ataques recientes de actores maliciosos, incluida la creaci\u00f3n de campa\u00f1as sofisticadas usando blockchain y GitHub, demuestran que los ataques a repositorios est\u00e1n evolucionando\u201d, advirti\u00f3 Valentic. \u201cLos desarrolladores y las organizaciones deben estar atentos a intentos de introducir c\u00f3digo malicioso en aplicaciones leg\u00edtimas, acceder a activos de desarrollo sensibles y robar datos confidenciales y activos digitales\u201d.<\/p><\/blockquote>\n<ul>\n<li>Lee tambi\u00e9n: <a href=\"https:\/\/www.criptofacil.com\/es\/pump-fun-promete-multiplicar-por-10-las-ganancias-de-creadores-de-memecoins-snorter-token-ya-roza-los-4-millones-de-dolares\/\">Pump.fun promete multiplicar por 10 las ganancias de creadores de memecoins \u2013 Snorter Token ya roza los 4 millones de d\u00f3lares<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Hackers est\u00e1n aplicando una nueva t\u00e1ctica de ataque contra protocolos utilizando contratos inteligentes de Ethereum. La estrategia consiste en aprovechar estos contratos para evadir la detecci\u00f3n en paquetes maliciosos de Node Package Manager (NPM). En otras palabras, se hacen pasar por aplicaciones leg\u00edtimas, usando la seguridad de la propia red. Seg\u00fan un art\u00edculo publicado por [&hellip;]<\/p>\n","protected":false},"author":34,"featured_media":21145,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[1812,1784,1783,1831,1832,1816,1940],"class_list":["post-21144","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticias","tag-blockchain","tag-eth","tag-ethereum","tag-hack","tag-seguridad","tag-super-titular","tag-tecnologia"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u00a1Cuidado! 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