{"id":17942,"date":"2023-05-04T14:07:03","date_gmt":"2023-05-04T12:07:03","guid":{"rendered":"https:\/\/www.m-q.ch\/?p=17942"},"modified":"2023-05-04T14:23:30","modified_gmt":"2023-05-04T12:23:30","slug":"les-attaques-web-shell-une-nouvelle-menace-de-premier-plan","status":"publish","type":"post","link":"https:\/\/www.m-q.ch\/fr\/les-attaques-web-shell-une-nouvelle-menace-de-premier-plan\/","title":{"rendered":"Les attaques par shell Web, une nouvelle menace majeure"},"content":{"rendered":"<figure id=\"attachment_17943\" aria-describedby=\"caption-attachment-17943\" style=\"width: 680px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-17943\" src=\"https:\/\/www.m-q.ch\/wp-content\/uploads\/2023\/05\/Web-Shell-Angriffe-als-neue-Top-Bedrohung_MQ.jpg\" alt=\"\" width=\"680\" height=\"303\" srcset=\"https:\/\/www.m-q.ch\/wp-content\/uploads\/2023\/05\/Web-Shell-Angriffe-als-neue-Top-Bedrohung_MQ.jpg 680w, https:\/\/www.m-q.ch\/wp-content\/uploads\/2023\/05\/Web-Shell-Angriffe-als-neue-Top-Bedrohung_MQ-18x8.jpg 18w, https:\/\/www.m-q.ch\/wp-content\/uploads\/2023\/05\/Web-Shell-Angriffe-als-neue-Top-Bedrohung_MQ-375x167.jpg 375w\" sizes=\"auto, (max-width: 680px) 100vw, 680px\" \/><figcaption id=\"caption-attachment-17943\" class=\"wp-caption-text\">Cybers\u00e9curit\u00e9 : les principales menaces au premier trimestre 2023 (graphique : Cisco Talos)<\/figcaption><\/figure>\n<p>La soci\u00e9t\u00e9 de renseignement sur les menaces Cisco Talos a publi\u00e9 son analyse trimestrielle sur l'\u00e9tat des menaces pour le premier trimestre 2023. Il en ressort que les applications Web accessibles au public ont \u00e9t\u00e9 l'une des principales cibles des acteurs de la menace au cours de cette p\u00e9riode. Pr\u00e8s de la moiti\u00e9 des attaques (45 %) utilisent ces applications comme vecteur initial pour acc\u00e9der aux syst\u00e8mes. Cela correspond \u00e0 une augmentation de 15 % par rapport au trimestre pr\u00e9c\u00e9dent. Un grand nombre de ces attaques ont utilis\u00e9 des shells web qui ont compromis des serveurs accessibles via Internet. D'une mani\u00e8re g\u00e9n\u00e9rale, un shell web est un script malveillant qui se fait passer pour un fichier l\u00e9gitime et ouvre ainsi une porte d\u00e9rob\u00e9e vers le serveur web. Les shells Web sont g\u00e9n\u00e9ralement \"laiss\u00e9s\" pour d'autres attaques apr\u00e8s une infiltration d\u00e9j\u00e0 r\u00e9ussie. Selon les chercheurs de Talos, les pirates ont profit\u00e9 du fait que de nombreux comptes d'utilisateurs d'applications Web n'\u00e9taient prot\u00e9g\u00e9s que par des mots de passe faibles ou une authentification \u00e0 facteur unique.<\/p>\n<h3><strong>Le renforcement de la d\u00e9fense contre les ransomwares a emp\u00each\u00e9 de plus grands succ\u00e8s<\/strong><\/h3>\n<p>La menace des ransomwares reste \u00e9lev\u00e9e. Bien que Cisco Talos ait observ\u00e9 une baisse g\u00e9n\u00e9rale des cas d'extorsion r\u00e9ussis au premier trimestre 2023, l'activit\u00e9 des ransomwares reste globalement \u00e9lev\u00e9e. Les activit\u00e9s dites \"pr\u00e9-ransomware\" repr\u00e9sentent environ un cinqui\u00e8me de toutes les attaques, de sorte que l'on peut s'attendre \u00e0 une nouvelle augmentation des attaques r\u00e9ussies dans les prochains mois. Cisco Talos a pu attribuer de nombreuses mesures d'attaque pr\u00e9liminaires \u00e0 des groupes de ransomware connus comme Vice Society. Selon les chercheurs, l'intervention rapide des \u00e9quipes de s\u00e9curit\u00e9 des entreprises victimes a contribu\u00e9 \u00e0 endiguer les attaques avant que le chiffrement ne puisse avoir lieu. Au premier trimestre 2023, c'est surtout le secteur de la sant\u00e9 qui a \u00e9t\u00e9 la cible des criminels, suivi de pr\u00e8s par le commerce de d\u00e9tail, l'immobilier et l'h\u00f4tellerie.\u00a0<\/p>\n<h3><strong>Les documents OneNote comme arme<\/strong><\/h3>\n<p>L'ann\u00e9e derni\u00e8re d\u00e9j\u00e0, les logiciels malveillants dits \"de commodit\u00e9\" avaient le vent en poupe. Ils sont tr\u00e8s r\u00e9pandus et peuvent \u00eatre achet\u00e9s ou t\u00e9l\u00e9charg\u00e9s gratuitement. Les logiciels malveillants de base ne sont g\u00e9n\u00e9ralement pas personnalis\u00e9s et sont utilis\u00e9s par les acteurs de la menace \u00e0 diff\u00e9rents stades de leurs activit\u00e9s. Au premier trimestre 2023, les chargeurs de commodit\u00e9s d\u00e9j\u00e0 rep\u00e9r\u00e9s auparavant, comme Qakbot, sont r\u00e9apparus en force. Qakbot utilisait souvent des documents OneNote malveillants. L'utilisation de pi\u00e8ces jointes OneNote malveillantes a \u00e9galement \u00e9t\u00e9 observ\u00e9e dans d'autres tentatives d'attaque. Selon l'analyse de Talos, les acteurs de la menace continuent donc d'exp\u00e9rimenter avec des types de fichiers qui ne d\u00e9pendent pas des macros. Microsoft avait commenc\u00e9 \u00e0 d\u00e9sactiver les macros par d\u00e9faut dans ses applications en juillet 2022. D'autres applications, qui portent et g\u00e8rent d'autres fichiers, sont \u00e9galement concern\u00e9es.<\/p>\n<h3><strong>Plus de r\u00e9sultats<\/strong><\/h3>\n<p>Le premier trimestre 2023 a apport\u00e9 de nouveaux \u00e9l\u00e9ments. Ainsi, dans 30 % des cas d'attaques observ\u00e9s, l'authentification multi-facteurs (MFA) n'\u00e9tait pas activ\u00e9e du tout ou seulement pour quelques comptes et services critiques. En outre, la bo\u00eete \u00e0 outils open source Mimikatz a \u00e9t\u00e9 utilis\u00e9e dans pr\u00e8s de 60 % des ransomwares et pr\u00e9-ransomwares au cours du trimestre. Mimikatz est un outil post-exploitation tr\u00e8s r\u00e9pandu qui permet de voler les identifiants de connexion, les mots de passe et les jetons d'authentification des syst\u00e8mes Windows compromis.<\/p>\n<p>Mais il y a aussi des nouvelles plus r\u00e9jouissantes : Les succ\u00e8s actuels des autorit\u00e9s de poursuite p\u00e9nale pour d\u00e9manteler les grands gangs de ransomware (par ex. Hive) portent leurs fruits. Toutefois, cela laisse la place \u00e0 de nouvelles familles ou \u00e0 la formation de nouveaux partenariats. Ainsi, une nouvelle famille de ransomware-as-a-service (RaaS) est apparue au T1\/2023 avec Daixin Ransomware.<\/p>\n<p><em>Source : <a href=\"https:\/\/www.cisco.com\/c\/de_ch\/index.html\">Cisco<\/a><\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>Le nombre d'attaques via des shells web a augment\u00e9 de mani\u00e8re sup\u00e9rieure \u00e0 la moyenne au cours des trois premiers mois de 2023. Selon les analyses de Cisco Talos, cette forme d'attaque a \u00e9t\u00e9 responsable d'un quart de tous les incidents examin\u00e9s par l'\u00e9quipe de r\u00e9ponse aux incidents au cours du premier trimestre 2023. <\/p>","protected":false},"author":10,"featured_media":17943,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4],"tags":[4492,4594,3501,3362],"class_list":["post-17942","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-risikomanagement","tag-cyberkriminalitaet","tag-cybervorfaelle","tag-it","tag-studie"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Web-Shell-Angriffe als neue Top-Bedrohung - MQ Management und Qualit\u00e4t<\/title>\n<meta name=\"description\" content=\"Laut Analysen von Cisco Talos waren im ersten Quartal 2023 Web-Shell-Angriffe f\u00fcr ein Viertel aller Cyber-Vorf\u00e4lle verantwortlich.\" \/>\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.m-q.ch\/fr\/les-attaques-web-shell-une-nouvelle-menace-de-premier-plan\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Web-Shell-Angriffe als neue Top-Bedrohung\" \/>\n<meta property=\"og:description\" content=\"Laut Analysen von Cisco Talos waren im ersten Quartal 2023 Web-Shell-Angriffe f\u00fcr ein Viertel aller Cyber-Vorf\u00e4lle verantwortlich.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.m-q.ch\/fr\/les-attaques-web-shell-une-nouvelle-menace-de-premier-plan\/\" \/>\n<meta property=\"og:site_name\" content=\"MQ Management und Qualit\u00e4t\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/ManagementUndQualitaet\" \/>\n<meta property=\"article:published_time\" content=\"2023-05-04T12:07:03+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-05-04T12:23:30+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.m-q.ch\/wp-content\/uploads\/2023\/05\/Web-Shell-Angriffe-als-neue-Top-Bedrohung_MQ.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"680\" \/>\n\t<meta property=\"og:image:height\" content=\"303\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Thomas Berner\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"#Web-Shell-Angriffe als neue #Top-Bedrohung\" \/>\n<meta name=\"twitter:description\" content=\"Laut Analysen von Cisco Talos waren im ersten Quartal 2023 #Web-Shell-Angriffe f\u00fcr ein Viertel aller #Cyber-Vorf\u00e4lle verantwortlich.\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/www.m-q.ch\/wp-content\/uploads\/2023\/05\/Web-Shell-Angriffe-als-neue-Top-Bedrohung_MQ.jpg\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Thomas Berner\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.m-q.ch\/web-shell-angriffe-als-neue-top-bedrohung\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.m-q.ch\/web-shell-angriffe-als-neue-top-bedrohung\/\"},\"author\":{\"name\":\"Thomas Berner\",\"@id\":\"https:\/\/www.m-q.ch\/fr\/#\/schema\/person\/a8711938b1cfb3f056dec70eaa0b42ab\"},\"headline\":\"Web-Shell-Angriffe als neue Top-Bedrohung\",\"datePublished\":\"2023-05-04T12:07:03+00:00\",\"dateModified\":\"2023-05-04T12:23:30+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.m-q.ch\/web-shell-angriffe-als-neue-top-bedrohung\/\"},\"wordCount\":529,\"publisher\":{\"@id\":\"https:\/\/www.m-q.ch\/fr\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.m-q.ch\/web-shell-angriffe-als-neue-top-bedrohung\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.m-q.ch\/wp-content\/uploads\/2023\/05\/Web-Shell-Angriffe-als-neue-Top-Bedrohung_MQ.jpg\",\"keywords\":[\"Cyberkriminalit\u00e4t\",\"Cybervorf\u00e4lle\",\"IT\",\"Studie\"],\"articleSection\":[\"Risikomanagement\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.m-q.ch\/web-shell-angriffe-als-neue-top-bedrohung\/\",\"url\":\"https:\/\/www.m-q.ch\/web-shell-angriffe-als-neue-top-bedrohung\/\",\"name\":\"Web-Shell-Angriffe als neue Top-Bedrohung - 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