{"id":30078,"date":"2020-08-11T11:13:30","date_gmt":"2020-08-11T11:13:30","guid":{"rendered":"https:\/\/www.retarus.com\/blog\/emotet-est-de-retour\/"},"modified":"2026-08-06T09:04:08","modified_gmt":"2026-08-06T09:04:08","slug":"emotet-est-de-retour","status":"publish","type":"post","link":"https:\/\/www.retarus.com\/blog\/fr\/emotet-est-de-retour\/","title":{"rendered":"Emotet est de retour !"},"content":{"rendered":" <p class=\"wp-block-paragraph\">Le fameux cheval de Troie informatique aux cons\u00e9quences redoutables a plus d&rsquo;un tour dans son sac. Apr\u00e8s seulement six mois de r\u00e9pit, Emotet est d\u00e9j\u00e0 de retour. De nouveau tr\u00e8s actif, il envahit les bo\u00eetes de messagerie d&rsquo;entreprises et d&rsquo;administrations \u00e0 grand renfort d&rsquo;e-mails frauduleux particuli\u00e8rement dangereux sous des dehors pourtant si authentiques.<\/p>   <p class=\"wp-block-paragraph\">Nos coll\u00e8gues de Retarus Threat Intelligence enregistrent depuis fin juillet un v\u00e9ritable bombardement permanent par Emotet. Les e-mails d&rsquo;Emotet sont des plus perfides. A premi\u00e8re vue, les exp\u00e9diteurs correspondent \u00e0 de r\u00e9els coll\u00e8gues, les messages font r\u00e9f\u00e9rence \u00e0 des conversations de messagerie pr\u00e9c\u00e9dentes et incluent m\u00eame depuis peu en pi\u00e8ce jointe des documents en lien avec des \u00e9changes pr\u00e9c\u00e9dents. Suffisant pour mettre totalement en confiance et att\u00e9nuer le niveau vigilance du destinataire et l&rsquo;amener \u00e0 cliquer sur le lien inclus dans le message. Les cons\u00e9quences sont d\u00e9sastreuses.<\/p>   <p class=\"wp-block-paragraph\"><a href=\"https:\/\/fr.wikipedia.org\/wiki\/Emotet\">Emotet<\/a> parvient le plus souvent \u00e0 infecter les syst\u00e8mes au moyen de documents Word contenant des macrovirus. Ces derniers sont stock\u00e9s par les auteurs et les profiteurs du logiciel malveillant sur des serveurs les plus insoup\u00e7onnables, qui sont <a href=\"https:\/\/paste.cryptolaemus.com\/\">constamment \u00e9chang\u00e9s<\/a>. Lorsqu&rsquo;un collaborateur est amen\u00e9 \u00e0 ouvrir un de ces fichiers et \u00e0 activer les macros contenus, le logiciel malveillant parvient \u00e0 lire le carnet d&rsquo;adresses et les e-mails de Microsoft&nbsp;Outlook (ce que l&rsquo;on appelle le \u00ab&nbsp;Outlook&nbsp;Harvesting&nbsp;\u00bb) et g\u00e9n\u00e8re de nouveaux messages frauduleux envoy\u00e9s \u00e0 des destinataires faisant partie du r\u00e9seau de l&rsquo;entreprise attaqu\u00e9e. Emotet peut en outre charger des logiciels malveillants suppl\u00e9mentaires, par exemple pour obtenir des donn\u00e9es d&rsquo;acc\u00e8s ou un acc\u00e8s \u00e0 distance. Le programme malveillant cherche de mani\u00e8re g\u00e9n\u00e9rale \u00e0 paralyser l&rsquo;ensemble de l&rsquo;infrastructure informatique et\/ou \u00e0 soutirer des paiements sous forme de demande de ran\u00e7on.<\/p>   <h2 class=\"wp-block-heading\" id=\"h-comment-se-proteger-efficacement-contre-emotet-nbsp\">Comment se prot\u00e9ger efficacement contre Emotet&nbsp;?<\/h2>   <p class=\"wp-block-paragraph\">Esp\u00e9rer une protection \u00e0 100&nbsp;% efficace face \u00e0 Emotet serait illusoire. En particulier parce que ce logiciel malveillant \u00ab&nbsp;polymorphe&nbsp;\u00bb (identifi\u00e9 \u00e0 l&rsquo;origine en 2014) est en mutation permanente et son d\u00e9veloppement, continu. Une solution de s\u00e9curit\u00e9 de messagerie performante combin\u00e9e \u00e0 une sensibilisation adapt\u00e9e des utilisateurs permet cependant le plus souvent d&rsquo;\u00e9viter une infection ou de limiter l&rsquo;impact d&rsquo;une attaque.<\/p>   <p class=\"wp-block-paragraph\">Parmi les diff\u00e9rents services propos\u00e9s par Retarus, la solution de Postdelivery Protection <a href=\"https:\/\/www.retarus.com\/fr\/services\/email-security\/tech-specs\/#patient-zero-detection\">Patient Zero Detection<\/a>\u00ae brevet\u00e9e pour tous les march\u00e9s correspondants est particuli\u00e8rement adapt\u00e9e pour faire face. Elle permet de reconna\u00eetre les programmes malveillants et liens hypertexte dangereux m\u00eame dans les e-mails ayant d\u00e9j\u00e0 \u00e9t\u00e9 envoy\u00e9s et d&rsquo;avertir les destinataires et les administrateurs d\u00e8s que les correctifs correspondants sont disponibles pour l&rsquo;un des quatre scanners d&rsquo;AntiVirus MultiScan.<\/p>   <figure data-wp-context=\"{&quot;imageId&quot;:&quot;6aeeb16f5522d&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6aeeb16f5522d\" class=\"wp-block-image size-large wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"1369\" height=\"906\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/www.retarus.com\/blog\/wp-content\/uploads\/sites\/41\/2026\/07\/PZD-Real-Time-Response_Rules-3.png\" alt=\"\" class=\"wp-image-8340\" srcset=\"https:\/\/www.retarus.com\/blog\/wp-content\/uploads\/sites\/41\/2026\/07\/PZD-Real-Time-Response_Rules-3.png 1369w, https:\/\/www.retarus.com\/blog\/wp-content\/uploads\/sites\/41\/2026\/07\/PZD-Real-Time-Response_Rules-3-300x199.png 300w, https:\/\/www.retarus.com\/blog\/wp-content\/uploads\/sites\/41\/2026\/07\/PZD-Real-Time-Response_Rules-3-1024x678.png 1024w, https:\/\/www.retarus.com\/blog\/wp-content\/uploads\/sites\/41\/2026\/07\/PZD-Real-Time-Response_Rules-3-768x508.png 768w, https:\/\/www.retarus.com\/blog\/wp-content\/uploads\/sites\/41\/2026\/07\/PZD-Real-Time-Response_Rules-3-360x239.png 360w\" sizes=\"auto, (max-width: 1369px) 100vw, 1369px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\tdata-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.thisImage.buttonRight\"\n\t\t\tdata-wp-style--top=\"state.thisImage.buttonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>   <p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.retarus.com\/fr\/services\/email-security\/tech-specs\/#pzd-real-time-response\">PZD Real-Time Response<\/a> va encore plus loin&nbsp;: ce logiciel pr\u00e9vu pour les environnements Exchange permet de traiter les r\u00e9sultats de la solution Patient Zero Detection\u00ae sur la base de r\u00e8gles afin de reconna\u00eetre les e-mails potentiellement dangereux dans la bo\u00eete de r\u00e9ception d&rsquo;un utilisateur et de les d\u00e9placer ou supprimer automatiquement. Les deux outils peuvent simplifier de mani\u00e8re significative la mitigation et la forensic lors d&rsquo;une attaque Emotet.<\/p>   <h2 class=\"wp-block-heading\" id=\"h-les-ordinateurs-infectes-a-deconnecter-au-plus-vite-du-reseau\">Les ordinateurs infect\u00e9s \u00e0 d\u00e9connecter au plus vite du r\u00e9seau <\/h2>   <p class=\"wp-block-paragraph\">Dans tous les cas, les ordinateurs infect\u00e9s par Emotet doivent \u00eatre d\u00e9connect\u00e9s d&rsquo;Internet et du r\u00e9seau d&rsquo;entreprise le plus vite possible, afin d\u00e8viter que les clients concern\u00e9s propagens le malware dans l&rsquo;entreprise ou chargens des charges utiles (payload) dangereuses depuis le r\u00e9seau. Le logiciel lui-m\u00eame est programm\u00e9 et install\u00e9 de mani\u00e8re si astucieuse et se cache si profond\u00e9ment dans le syst\u00e8me qu&rsquo;il est pr\u00e9f\u00e9rable de r\u00e9initialiser compl\u00e8tement les PC affect\u00e9s et de les reconfigurer \u00e0 partir de z\u00e9ro.<\/p>   <p class=\"wp-block-paragraph\">Afin d&rsquo;\u00e9viter le plus possible \u00e0 vos utilisateurs d&rsquo;\u00eatre confront\u00e9s \u00e0 ce genre d&rsquo;incident, nous vous invitons \u00e0 d\u00e9couvrir notre <a href=\"https:\/\/www.retarus.com\/fr\/retarus-anti-phishing-guide\">Guide anti-phishing gratuit<\/a> qui regorge de conseils pratiques pour utiliser votre messagerie le plus judicieusement possible. Ce petit mode d&#8217;emploi est disponible <a href=\"https:\/\/www.retarus.com\/wp-content\/uploads\/2022\/04\/retarus_anti-phishing-guide_en-de-fr-it-es_2022.zip\">en cinq langues<\/a> pour \u00eatre t\u00e9l\u00e9charg\u00e9 et transmis \u00e0 vos collaborateurs.<\/p>   <figure data-wp-context=\"{&quot;imageId&quot;:&quot;6aeeb16f556e4&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6aeeb16f556e4\" class=\"wp-block-image size-large wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/www.retarus.com\/blog\/wp-content\/uploads\/sites\/41\/2026\/07\/guide_blog_flo-3.jpg\" alt=\"APG Blog Visual\" class=\"wp-image-8246\" srcset=\"https:\/\/www.retarus.com\/blog\/wp-content\/uploads\/sites\/41\/2026\/07\/guide_blog_flo-3.jpg 1280w, https:\/\/www.retarus.com\/blog\/wp-content\/uploads\/sites\/41\/2026\/07\/guide_blog_flo-3-300x169.jpg 300w, https:\/\/www.retarus.com\/blog\/wp-content\/uploads\/sites\/41\/2026\/07\/guide_blog_flo-3-1024x576.jpg 1024w, https:\/\/www.retarus.com\/blog\/wp-content\/uploads\/sites\/41\/2026\/07\/guide_blog_flo-3-768x432.jpg 768w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\tdata-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.thisImage.buttonRight\"\n\t\t\tdata-wp-style--top=\"state.thisImage.buttonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>   <p class=\"wp-block-paragraph\">Vous trouverez davantage d&rsquo;informations sur la <a href=\"https:\/\/www.retarus.com\/fr\/services\/email-security\/\">Secure Email Platform de Retarus<\/a>, y compris sur la solution <a href=\"https:\/\/www.retarus.com\/fr\/services\/email-security\/tech-specs\/\">Patient Zero Detection\u00ae et sur PZD Real-Time Response<\/a> sur notre site Web ou directement aupr\u00e8s de votre <a href=\"https:\/\/www.retarus.com\/fr\/contact\/\">interlocteur<\/a> habituel.<\/p> ","protected":false},"excerpt":{"rendered":"<p>Le fameux cheval de Troie informatique aux cons\u00e9quences redoutables a plus d&rsquo;un tour dans son sac. Apr\u00e8s seulement six mois de r\u00e9pit, Emotet est d\u00e9j\u00e0 de retour.<\/p>\n","protected":false},"author":14,"featured_media":11396,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"ret_read_more_text":"","ret_thumb_border":false,"footnotes":""},"categories":[3051],"tags":[1608,1446],"ret_content_type":[3097],"class_list":["post-30078","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-securite-des-emails","tag-emotet","tag-patient-zero-detection","ret_content_type-actualites-du-secteur"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.8 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Emotet est de retour !<\/title>\n<meta name=\"description\" content=\"Le fameux cheval de Troie informatique aux cons\u00e9quences redoutables a plus d&#039;un tour dans son sac. Apr\u00e8s seulement six mois de r\u00e9pit, Emotet est d\u00e9j\u00e0 de retour.\" \/>\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.retarus.com\/blog\/fr\/emotet-est-de-retour\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Emotet Phishing E-Mails: Wie kann man sich sch\u00fctzen?\" \/>\n<meta property=\"og:description\" content=\"Der Trojaner Emotet flutet die Postf\u00e4cher von Unternehmen und Beh\u00f6rden mit t\u00e4uschend echten Phishing Mails. Kostenloser Anti Phishing Guide.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.retarus.com\/blog\/fr\/emotet-est-de-retour\/\" \/>\n<meta property=\"og:site_name\" content=\"Retarus Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/retarus\" \/>\n<meta property=\"article:published_time\" content=\"2020-08-11T11:13:30+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-06T09:04:08+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.retarus.com\/blog-transfer\/wp-content\/uploads\/sites\/41\/2026\/07\/shutterstock_680078878-5.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1080\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Thomas Cloer\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Emotet Phishing E-Mails: Wie kann man sich sch\u00fctzen?\" \/>\n<meta name=\"twitter:description\" content=\"Der Trojaner Emotet flutet die Postf\u00e4cher von Unternehmen und Beh\u00f6rden mit t\u00e4uschend echten Phishing Mails. 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