{"id":232728,"date":"2026-11-05T12:54:26","date_gmt":"2026-11-05T12:54:26","guid":{"rendered":"https:\/\/www.intrinsec.com\/?p=232728"},"modified":"2026-11-05T14:42:31","modified_gmt":"2026-11-05T14:42:31","slug":"malicious-browser-extensions-ecosystem-overview","status":"publish","type":"post","link":"https:\/\/www.intrinsec.com\/en\/malicious-browser-extensions-ecosystem-overview\/","title":{"rendered":"Malicious browser extensions ecosystem overview"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"232728\" class=\"elementor elementor-232728\" data-elementor-settings=\"{&quot;element_pack_global_tooltip_width&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;element_pack_global_tooltip_width_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;element_pack_global_tooltip_width_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;element_pack_global_tooltip_padding&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;element_pack_global_tooltip_padding_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;element_pack_global_tooltip_padding_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;element_pack_global_tooltip_border_radius&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;element_pack_global_tooltip_border_radius_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;element_pack_global_tooltip_border_radius_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true}}\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dd5dbd2 e-flex e-con-boxed e-con e-parent\" data-id=\"dd5dbd2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-220d3be elementor-widget elementor-widget-text-editor\" data-id=\"220d3be\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f8d6114 elementor-widget elementor-widget-text-editor\" data-id=\"f8d6114\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\"><div class=\"elementor-widget-container\"><h4>Key findings<\/h4><div>\u00a0<\/div><div><ul><li>Recent public campaigns involving malicious browser extensions. Several common features were identified among the campaigns, such as the release of &#039;clean&#039; extensions to gain trust, silent updates containing the malware, advanced evasion techniques and a focus on the theft of cryptocurrencies and authenticated sessions.<\/li><li>Known threat actors that actively develop and manage malware masquerading as legitimate extensions. Discussions inside the forums highlight the quest for \u201csilent\u201d extension installation. We also noticed some talks about moderation and long-term stability for extensions on browser stores.<\/li><li>Details on an incident investigated by our SOC and CTI related to malicious extensions. No evidence of malicious activity was evident at this time, but we managed to identify a list of \u201csuspicious\u201d browser extensions.<\/li><li>Infrastructure analysis and pivots available to detect known malware that can be disguised as legitimate extensions, including Needle and Lunex. IP addresses exposing panels for these malware were identified.<\/li><\/ul><p><span lang=\"EN-GB\">\u00a0<\/span><\/p><\/div><\/div><\/div><div class=\"elementor-element elementor-element-310e4ce elementor-widget elementor-widget-text-editor\" data-id=\"310e4ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\"><div class=\"elementor-widget-container\"><h4>Intrinsec&#039;s CTI services<\/h4><div>\u00a0<\/div><p>Organizations are facing a rise in the sophistication of threat actors and intrusion sets. To address these evolving threats, it is now necessary to take a proactive approach in the detection and analysis of any element deemed malicious. Such a hands-on approach allows companies to anticipate, or at least react as quickly as possible to the compromises they face.<\/p><p>For this report, shared with our clients in March 2026, Intrinsec relied on its Cyber Threat Intelligence service, which provides its customers with high value-added, contextualized and actionable intelligence to understand and contain cyber threats. Our CTI team consolidates data &amp; information gathered from our security monitoring services (SOC, MDR, etc.), our incident response team (CERT-Intrinsec) and custom cyber intelligence generated by our analysts using custom heuristics, honeypots, hunting, reverse-engineering &amp; pivots.<\/p><p>Intrinsec also offers various services around Cyber Threat Intelligence:<\/p><ul><li>Risk anticipation: which can be leveraged to continuously adapt the detection &amp; response capabilities of our clients&#039; existing tools (EDR, XDR, SIEM, \u2026) through:<ul><li>an operational feed of IOCs based on our exclusive activities.<\/li><li>threat intel notes &amp; reports, TIP-compliant.<\/li><\/ul><\/li><\/ul><ul><li>Digital risk monitoring:<ul><li>data leak detection &amp; remediation<\/li><li>external asset security monitoring (EASM)<\/li><li>brand protection<\/li><\/ul><\/li><\/ul><p>For more information, go to\u00a0<a href=\"http:\/\/www.intrinsec.com\/en\/cyber-threat-intelligence\/\">intrinsec.com\/en\/cyber-threat-intelligence\/<\/a>.<\/p><p>Follow us on\u00a0<a href=\"https:\/\/www.linkedin.com\/company\/intrinsec\/\">LinkedIn<\/a>\u00a0and\u00a0<a href=\"https:\/\/twitter.com\/Intrinsec\">X<\/a><\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9cdb767 elementor-widget elementor-widget-button\" data-id=\"9cdb767\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/www.intrinsec.com\/wp-content\/uploads\/2026\/11\/TLP-CLEAR-20261105-Malicious-extensions.pdf\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Download the full report<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Key findings \u00a0 Recent public campaigns involving malicious browser extensions. Several common features were identified [&hellip;]<\/p>\n","protected":false},"author":43,"featured_media":232734,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,11],"tags":[160],"class_list":["post-232728","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cyber-threat-intelligence","category-threat-intelligence-report","tag-cyber-threat-intelligence"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.6 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Malicious browser extensions ecosystem overview - INTRINSEC<\/title>\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.intrinsec.com\/en\/malicious-browser-extensions-ecosystem-overview\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Malicious browser extensions ecosystem overview\" \/>\n<meta property=\"og:description\" content=\"Key findings \u00a0 Recent public campaigns involving malicious browser extensions. Several common features were identified [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.intrinsec.com\/en\/malicious-browser-extensions-ecosystem-overview\/\" \/>\n<meta property=\"og:site_name\" content=\"INTRINSEC\" \/>\n<meta property=\"article:published_time\" content=\"2026-11-05T12:54:26+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-11-05T14:42:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.intrinsec.com\/wp-content\/uploads\/2026\/11\/cover_browser_extensions.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1280\" \/>\n\t<meta property=\"og:image:height\" content=\"720\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Ruben Madar\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@Intrinsec\" \/>\n<meta name=\"twitter:site\" content=\"@Intrinsec\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Ruben Madar\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.intrinsec.com\\\/malicious-browser-extensions-ecosystem-overview\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.intrinsec.com\\\/malicious-browser-extensions-ecosystem-overview\\\/\"},\"author\":{\"name\":\"Ruben Madar\",\"@id\":\"https:\\\/\\\/www.intrinsec.com\\\/#\\\/schema\\\/person\\\/8656db17eff6a4f9a372f5dd5bd08853\"},\"headline\":\"Malicious browser extensions ecosystem overview\",\"datePublished\":\"2026-11-05T12:54:26+00:00\",\"dateModified\":\"2026-11-05T14:42:31+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.intrinsec.com\\\/malicious-browser-extensions-ecosystem-overview\\\/\"},\"wordCount\":369,\"publisher\":{\"@id\":\"https:\\\/\\\/www.intrinsec.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.intrinsec.com\\\/malicious-browser-extensions-ecosystem-overview\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.intrinsec.com\\\/wp-content\\\/uploads\\\/2026\\\/11\\\/cover_browser_extensions.png\",\"keywords\":[\"Cyber Threat Intelligence\"],\"articleSection\":[\"Cyber Threat Intelligence\",\"Threat Intelligence Report\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.intrinsec.com\\\/malicious-browser-extensions-ecosystem-overview\\\/\",\"url\":\"https:\\\/\\\/www.intrinsec.com\\\/malicious-browser-extensions-ecosystem-overview\\\/\",\"name\":\"Malicious browser extensions ecosystem overview - 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