{"id":86699,"date":"2024-09-03T15:44:44","date_gmt":"2024-09-03T07:44:44","guid":{"rendered":"https:\/\/version-2.com\/?p=86699"},"modified":"2024-08-29T15:46:21","modified_gmt":"2024-08-29T07:46:21","slug":"eset-research-spy-group-exploits-wps-office-zero-day-analysis-uncovers-a-second-vulnerability","status":"publish","type":"post","link":"https:\/\/version-2.com\/zh\/2024\/09\/eset-research-spy-group-exploits-wps-office-zero-day-analysis-uncovers-a-second-vulnerability\/","title":{"rendered":"ESET Research: Spy group exploits WPS Office zero day; analysis uncovers a second vulnerability"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"86699\" class=\"elementor elementor-86699\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-71ae5294 post-content elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"71ae5294\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[{&quot;jet_parallax_layout_image&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;_id&quot;:&quot;c4a899f&quot;,&quot;jet_parallax_layout_image_tablet&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_image_mobile&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_speed&quot;:{&quot;unit&quot;:&quot;%&quot;,&quot;size&quot;:50,&quot;sizes&quot;:[]},&quot;jet_parallax_layout_type&quot;:&quot;scroll&quot;,&quot;jet_parallax_layout_direction&quot;:&quot;1&quot;,&quot;jet_parallax_layout_fx_direction&quot;:null,&quot;jet_parallax_layout_z_index&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x&quot;:50,&quot;jet_parallax_layout_bg_x_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y&quot;:50,&quot;jet_parallax_layout_bg_y_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size&quot;:&quot;auto&quot;,&quot;jet_parallax_layout_bg_size_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_animation_prop&quot;:&quot;transform&quot;,&quot;jet_parallax_layout_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;]}]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1e9119cd\" data-id=\"1e9119cd\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4f04f8cb elementor-widget elementor-widget-text-editor\" data-id=\"4f04f8cb\" 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 id=\"content-c10874586\" class=\"frame frame-default frame-type-text frame-layout-0\"><ul><li>South Korea-aligned advanced persistent threat group APT-C-60 weaponized a remote code execution vulnerability in WPS Office for Windows (CVE-2024-7262) in order to target East Asian countries. ESET Research discovered the vulnerability and provides a root cause analysis, along with a description of its weaponization.<\/li><li>A strange spreadsheet document referencing one of the group\u2019s many downloader components pointed to APT-C-60.<\/li><li>The exploit is deceptive enough to trick users into clicking on a legitimate-looking spreadsheet while also being very effective and reliable. The choice of the MHTML file format allowed the attackers to turn a code execution vulnerability into a remote one.<\/li><li>While analyzing the vulnerability, ESET Research discovered another way to exploit it (CVE-2024-7263).<\/li><li>Following our coordinated vulnerability disclosure policy, as Kingsoft acknowledged and patched both vulnerabilities, we provide a detailed analysis.<\/li><\/ul><p><strong>BRATISLAVA, MONTREAL<\/strong> \u2014 <strong>August 28, 2024<\/strong> \u2014 ESET researchers discovered a remote code execution vulnerability in WPS Office for Windows (CVE-2024-7262). It was being exploited by APT-C-60, a South Korea-aligned cyberespionage group, to target East Asian countries. When examining the root cause, ESET discovered another way to exploit the faulty code (CVE-2924-7263). Following a coordinated disclosure process, both vulnerabilities are now patched. The final payload in the APT-C-60 attack is a custom backdoor with cyberespionage capabilities that ESET Research internally named SpyGlace.<\/p><p>\u201cWhile investigating APT-C-60 activities, we found a strange spreadsheet document referencing one of the group\u2019s many downloader components. The WPS Office software has over 500 million active users worldwide, which makes it a good target to reach a substantial number of individuals, particularly in the East Asia region,\u201d says ESET researcher Romain Dumont, who analyzed the vulnerabilities. During the coordinated vulnerability disclosure process between ESET and the vendor, DBAPPSecurity independently published an analysis of the weaponized vulnerability and confirmed that APT-C-60 has exploited the vulnerability to deliver malware to users in China.<\/p><p>The malicious document comes as an MHTML export of the commonly used XLS spreadsheet format. However, it contains a specially crafted and hidden hyperlink designed to trigger the execution of an arbitrary library if clicked when using the WPS Spreadsheet application. The rather unconventional MHTML file format allows a file to be downloaded as soon as the document is opened; therefore, leveraging this technique while exploiting the vulnerability provides for remote code execution.<\/p><p>\u201cTo exploit this vulnerability, an attacker would need to store a malicious library somewhere accessible by the targeted computer either on the system or on a remote share, and know its file path in advance. The exploit developers targeting this vulnerability knew a couple of tricks that helped them achieve this,\u201d explains Dumont. \u201cWhen opening the spreadsheet document with the WPS Spreadsheet application, the remote library is automatically downloaded and stored on disk,\u201d he adds.<\/p><p>Since this is a one-click vulnerability, the exploit developers embedded a picture of the spreadsheet\u2019s rows and columns inside to deceive and convince the user that the document is a regular spreadsheet. The malicious hyperlink was linked to the image so that clicking on a cell in the picture would trigger the exploit.<\/p><p>\u201cWhether the group developed or bought the exploit for CVE-2024-7262, it definitely required some research into the internals of the application but also knowledge of how the Windows loading process behaves,\u201d concludes Dumont.<\/p><p>After analyzing Kingsoft\u2019s silently released patch, Dumont noticed that it had not properly corrected the flaw and discovered another way to exploit it due to an improper input validation. ESET Research reported both vulnerabilities to Kingsoft, who acknowledged and patched them. Two high severity CVE entries were created: CVE-2024-7262 and CVE-2024-7263.<\/p><p>The discovery underlines the importance of a careful patch verification process and making sure that the core issue has been addressed in full. ESET strongly advises WPS Office for Windows users to update their software to the latest release.<\/p><p>For more technical information about the WPS Office vulnerabilities and exploits, check out the blog post \u201c<a href=\"https:\/\/www.welivesecurity.com\/en\/eset-research\/analysis-of-two-arbitrary-code-execution-vulnerabilities-affecting-wps-office\/\" target=\"_blank\" rel=\"noopener\">Analysis of two arbitrary code execution vulnerabilities affecting WPS Office<\/a>\u201d on WeLiveSecurity.com. Make sure to follow <a href=\"https:\/\/twitter.com\/ESETresearch\" target=\"_blank\" rel=\"noopener\">ESET Research on Twitter (today known as X)<\/a> for the latest news from ESET Research.<\/p><\/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-1a1b0f4 elementor-widget elementor-widget-shortcode\" data-id=\"1a1b0f4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">\t\t<div data-elementor-type=\"page\" data-elementor-id=\"18103\" class=\"elementor elementor-18103\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-748947f elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"748947f\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[{&quot;jet_parallax_layout_image&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;_id&quot;:&quot;c4f773e&quot;,&quot;jet_parallax_layout_image_tablet&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_image_mobile&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_speed&quot;:{&quot;unit&quot;:&quot;%&quot;,&quot;size&quot;:50,&quot;sizes&quot;:[]},&quot;jet_parallax_layout_type&quot;:&quot;scroll&quot;,&quot;jet_parallax_layout_direction&quot;:&quot;1&quot;,&quot;jet_parallax_layout_fx_direction&quot;:null,&quot;jet_parallax_layout_z_index&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x&quot;:50,&quot;jet_parallax_layout_bg_x_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y&quot;:50,&quot;jet_parallax_layout_bg_y_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size&quot;:&quot;auto&quot;,&quot;jet_parallax_layout_bg_size_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_animation_prop&quot;:&quot;transform&quot;,&quot;jet_parallax_layout_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;]}]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7995c19\" data-id=\"7995c19\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a437045 elementor-widget elementor-widget-image-box\" data-id=\"a437045\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">About Version 2 Digital<\/h3><p class=\"elementor-image-box-description\">Version 2 Digital is one of the most dynamic IT companies in Asia. The company distributes a wide range of IT products across various areas including cyber security, cloud, data protection, end points, infrastructures, system monitoring, storage, networking, business productivity and communication products.\n<br><br>\nThrough an extensive network of channels, point of sales, resellers, and partnership companies, Version 2 offers quality products and services which are highly acclaimed in the market. Its customers cover a wide spectrum which include Global 1000 enterprises, regional listed companies, different vertical industries, public utilities, Government, a vast number of successful SMEs, and consumers in various Asian cities.<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t\n\t\t<div data-elementor-type=\"page\" data-elementor-id=\"18159\" class=\"elementor elementor-18159\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-73b4cd0 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"73b4cd0\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[{&quot;_id&quot;:&quot;c4f773e&quot;,&quot;jet_parallax_layout_image&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_image_tablet&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_image_mobile&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_speed&quot;:{&quot;unit&quot;:&quot;%&quot;,&quot;size&quot;:50,&quot;sizes&quot;:[]},&quot;jet_parallax_layout_type&quot;:&quot;scroll&quot;,&quot;jet_parallax_layout_direction&quot;:&quot;1&quot;,&quot;jet_parallax_layout_fx_direction&quot;:null,&quot;jet_parallax_layout_z_index&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x&quot;:50,&quot;jet_parallax_layout_bg_x_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y&quot;:50,&quot;jet_parallax_layout_bg_y_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size&quot;:&quot;auto&quot;,&quot;jet_parallax_layout_bg_size_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_animation_prop&quot;:&quot;transform&quot;,&quot;jet_parallax_layout_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;]}]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8d19c1e\" data-id=\"8d19c1e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8865cce elementor-widget elementor-widget-text-editor\" data-id=\"8865cce\" 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<p><strong>About ESET<\/strong><br \/>For 30 years, ESET\u00ae has been developing industry-leading IT security software and services for businesses and consumers worldwide. With solutions ranging from endpoint security to encryption and two-factor authentication, ESET\u2019s high-performing, easy-to-use products give individuals and businesses the peace of mind to enjoy the full potential of their technology. ESET unobtrusively protects and monitors 24\/7, updating defenses in real time to keep users safe and businesses running without interruption. Evolving threats require an evolving IT security company. Backed by R&amp;D facilities worldwide, ESET became the first IT security company to earn 100 Virus Bulletin VB100 awards, identifying every single \u201cin-the-wild\u201d malware without interruption since 2003.<\/p>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>South Korea-aligned advanced persistent threat group AP [&hellip;]<\/p>\n","protected":false},"author":149011790,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1273,40,61],"tags":[41,1272],"class_list":["post-86699","post","type-post","status-publish","format-standard","hentry","category-1273","category-eset","category-press-release","tag-eset","tag-1272"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ESET Research: Spy group exploits WPS Office zero day; analysis uncovers a second vulnerability - Version 2<\/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.eset.com\/int\/about\/newsroom\/press-releases\/research\/eset-research-spy-group-exploits-wps-office-zero-day-analysis-uncovers-a-second-vulnerability\/\" \/>\n<meta property=\"og:locale\" content=\"zh_HK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ESET Research: Spy group exploits WPS Office zero day; analysis uncovers a second vulnerability - Version 2\" \/>\n<meta property=\"og:description\" content=\"South Korea-aligned advanced persistent threat group AP [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.eset.com\/int\/about\/newsroom\/press-releases\/research\/eset-research-spy-group-exploits-wps-office-zero-day-analysis-uncovers-a-second-vulnerability\/\" \/>\n<meta property=\"og:site_name\" content=\"Version 2\" \/>\n<meta property=\"article:published_time\" content=\"2024-09-03T07:44:44+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/version-2.com\/wp-content\/uploads\/2020\/04\/blog-v2-logo.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"250\" \/>\n\t<meta property=\"og:image:height\" content=\"70\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"tracylamv2\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"tracylamv2\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9810\u8a08\u95b1\u8b80\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 \u5206\u9418\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.eset.com\\\/int\\\/about\\\/newsroom\\\/press-releases\\\/research\\\/eset-research-spy-group-exploits-wps-office-zero-day-analysis-uncovers-a-second-vulnerability\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/version-2.com\\\/2024\\\/09\\\/eset-research-spy-group-exploits-wps-office-zero-day-analysis-uncovers-a-second-vulnerability\\\/\"},\"author\":{\"name\":\"tracylamv2\",\"@id\":\"https:\\\/\\\/version-2.com\\\/zh\\\/#\\\/schema\\\/person\\\/011bc7c3731c930bcfeecd52fefb6365\"},\"headline\":\"ESET Research: Spy group exploits WPS Office zero day; 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