{"id":60444,"date":"2026-04-07T00:00:00","date_gmt":"2026-04-07T00:00:00","guid":{"rendered":"urn:uuid:788d6ca5-c382-1f99-8405-0bbffcfab2af"},"modified":"2026-04-07T00:00:00","modified_gmt":"2026-04-07T00:00:00","slug":"claude-code-packaging-error-remains-a-lure-in-an-active-campaign-what-defenders-should-do","status":"publish","type":"post","link":"https:\/\/www.threatshub.org\/blog\/claude-code-packaging-error-remains-a-lure-in-an-active-campaign-what-defenders-should-do\/","title":{"rendered":"Claude Code Packaging Error Remains a Lure in an Active Campaign: What Defenders Should Do"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/trendmicro.scene7.com\/is\/image\/trendmicro\/claude-code-still-a-lure-fig1-hero:Large?qlt=80\"><\/p>\n<div><img decoding=\"async\" src=\"https:\/\/www.trendmicro.com\/content\/dam\/trendmicro\/global\/en\/research\/thumbnails\/26\/d\/claude-code-still-a-lure-fig1-hero.jpg\" class=\"ff-og-image-inserted\"><\/div>\n<div readability=\"52.990295857988\">\n<p><b>&nbsp;&nbsp;&nbsp;&nbsp;Key takeaways:<\/b><\/p>\n<ul>\n<li><span class=\"rte-red-bullet\">Attackers rapidly&nbsp;leveraged&nbsp;the Claude Code packaging error&nbsp;incident&nbsp;to distribute credential-stealing malware using fake GitHub repositories. This&nbsp;demonstrates&nbsp;how quickly threat actors can exploit public attention following a software supply chain incident.<\/span><\/li>\n<li><span class=\"rte-red-bullet\">Vidar,&nbsp;GhostSocks,\u202fand&nbsp;PureLog\u202fStealer&nbsp;were&nbsp;observed&nbsp;to have been distributed through the malicious GitHub releases; these payloads&nbsp;enable credential theft, cryptocurrency wallet exfiltration, session hijacking, and residential proxy abuse across Windows.<\/span><\/li>\n<li><span class=\"rte-red-bullet\">TrendAI\u202fVision One\u2122 detects and blocks the\u202fIoCs\u202fprovided at the end of this blog.\u202fTrendAI\u2122\u202fcustomers can also access tailored hunting queries, threat insights, and intelligence reports to better understand and proactively defend against this&nbsp;campaign.\u202f<\/span><\/li>\n<\/ul>\n<p>TrendAI\u2122 Research is&nbsp;continuously&nbsp;monitoring&nbsp;an active campaign that continues to&nbsp;leverage&nbsp;the packaging error in \u202f<a href=\"https:\/\/www.trendmicro.com\/en_us\/research\/26\/d\/weaponizing-trust-claude-code-lures-and-github-release-payloads.html\">Anthropic&#8217;s\u202fClaude Code\u202fnpm\u202frelease<\/a>&nbsp;to distribute Vidar,&nbsp;GhostSocks,\u202fand&nbsp;PureLog\u202fStealer payloads.&nbsp;<\/p>\n<p>The distribution hub\u202ffor the\u202fleaked Claude Code\u202fbrand lure campaign&nbsp;was&nbsp;identified as&nbsp;<i>https:\/\/github[.]com\/leaked-claude-code\/leaked-claude-code<\/i>. It is&nbsp;operated&nbsp;by&nbsp;a GitHub account&nbsp;identified as\u202f<i>idbzoomh1<\/i>,\u202fwho&nbsp;used the&nbsp;legitimate Claude Code source map leak&nbsp;incident&nbsp;as a lure to deliver payloads via a release asset.\u202f A previous account,&nbsp;<i>idbzoomh<\/i>, has been blocked by GitHub. As of publishing there are no other identified repositories connected to the campaign;&nbsp;TrendAI\u2122 Research will update this blog&nbsp;in the&nbsp;event of&nbsp;new findings.<\/p>\n<table cellpadding=\"1\" cellspacing=\"0\" border=\"1\" width=\"100%\">\n<tbody readability=\"7.5\">\n<tr>\n<td>Type\u202f<\/td>\n<td>Value\u202f<\/td>\n<\/tr>\n<tr readability=\"2\">\n<td>Threat&nbsp;actor&nbsp;email\u202f<\/td>\n<td>blactethe1061@outlook.com\u202f<\/td>\n<\/tr>\n<tr readability=\"2\">\n<td>Threat actor GitHub account<\/td>\n<td>idbzoomh1\u202f<\/td>\n<\/tr>\n<tr readability=\"5\">\n<td>Current\u202fDownload URL\u202f<\/td>\n<td>hxxps[:]\/\/github[.]com\/leaked-claude-code\/leaked-claude-code\/releases\/download\/leaked-claude-code\/Claude_code_x64[.]7<span class=\"rte-legal-text\">z\u202f<\/span><\/td>\n<\/tr>\n<tr readability=\"2\">\n<td>Payload (replaced)<\/td>\n<td>ClaudeCode_x64.7z&nbsp; (active&nbsp;from&nbsp;2026-03-31 14:05&nbsp;PST&nbsp;to&nbsp;2026-04-04 18:00\u202f&nbsp;UTC+8)<\/td>\n<\/tr>\n<tr readability=\"2\">\n<td>Payload (replaced)<\/td>\n<td>Claude-Code_x64.7z&nbsp;(active&nbsp;from&nbsp;2026-04-04 17:36&nbsp;PST&nbsp;to&nbsp;2026-04-04&nbsp;18:00 UTC+8)\u202f<\/td>\n<\/tr>\n<tr readability=\"2\">\n<td>Payload (current)<\/td>\n<td>Claude_code_x64.7z&nbsp;(533\u202fdownloads&nbsp;as of&nbsp;2026-04-07&nbsp;18:00 UTC+8)\u202f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span class=\"rte-legal-text\">Table 1.&nbsp;Threat&nbsp;actor identifiers and distribution&nbsp;artifacts<\/span><\/p>\n<p>The social engineering threat&nbsp;became&nbsp;a part&nbsp;of a broader malware distribution campaign&nbsp;that has been&nbsp;active since&nbsp;February&nbsp;2026.&nbsp;We have observed&nbsp;cycling through more than 25 software brands (e.g., AI tools, crypto bots, and creative software) across\u202ftrojanized\u202farchives, delivering&nbsp;a&nbsp;Rust-compiled dropper payload.&nbsp;<\/p>\n<p><span class=\"body-subhead-title\">Payloads delivered&nbsp;and impact scope<\/span><\/p>\n<p>Different malware payloads were&nbsp;observed&nbsp;to have been distributed through the malicious GitHub releases:<\/p>\n<ul>\n<li><span class=\"rte-red-bullet\"><a href=\"https:\/\/www.trendmicro.com\/en_us\/research\/25\/j\/how-vidar-stealer-2-upgrades-infostealer-capabilities.html\">Vidar\u202f<\/a><span>is a stealer\u202fknown to perform multi-threaded data theft targeting browser-stored credentials, cryptocurrency wallets, session tokens, and system information. Stolen data is exfiltrated to attacker-controlled C&amp;C infrastructure resolved through dead drop profiles on Steam Community and Telegram.\u202f<\/span><\/span><\/li>\n<li><span class=\"rte-red-bullet\"><a href=\"https:\/\/www.trendmicro.com\/en_us\/research\/25\/k\/lumma-stealer-browser-fingerprinting.html\">GhostSocks<\/a>\u202f<span>has been&nbsp;observed&nbsp;in&nbsp;previous&nbsp;campaigns to&nbsp;establish&nbsp;a SOCKS5 proxy on the victim&#8217;s machine, allowing the\u202fthreat\u202factors to tunnel network traffic through compromised hosts. This effectively turns infected machines into residential proxy infrastructure for further operations.\u202f<\/span><\/span><\/li>\n<li><span class=\"rte-red-bullet\"><a href=\"https:\/\/www.trendmicro.com\/en_us\/research\/26\/c\/copyright-lures-mask-a-multistage-purelog-stealer-attack.html\">PureLog\u202fStealer\u202f<\/a><span>is a .NET information stealer&nbsp;known to&nbsp;harvest&nbsp;Chrome credentials, browser extensions, cryptocurrency wallets, and system information. It executes entirely in memory using a multi-stage fileless loader chain to evade detection.\u202f<\/span><\/span><\/li>\n<\/ul>\n<p>The&nbsp;combined&nbsp;functionality of the malware payloads&nbsp;enables credential theft, cryptocurrency wallet exfiltration, session hijacking, and residential proxy abuse across Windows, giving the operators multiple monetization paths from a single infection.<\/p>\n<p>As&nbsp;of\u202fApril&nbsp;7, 2026, 18:00 UTC+8, there&nbsp;are\u202f838 stars,\u202f1,060 forks,\u202fand 533\u202fconfirmed&nbsp;downloads\u202fof&nbsp;the\u202fnew\u202fpayload archive.\u202fIt should be noted that there have been&nbsp;previous&nbsp;download links that have been&nbsp;deleted&nbsp;or&nbsp;replaced;&nbsp;the download counts for which cannot be retrieved anymore. The actual download numbers will likely continue to rise.&nbsp;<\/p>\n<\/p><\/div>\n<p> Read More <a href=\"https:\/\/www.trendmicro.com\/en_us\/research\/26\/d\/claude-code-remains-a-lure-what-defenders-should-do.html\">HERE<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Threat actors leveraged Anthropic\u2019s Claude Code npm release packaging error to distribute Vidar, GhostSocks,\u202fand PureLog\u202fStealer. This blog details immediate steps organizations can take and best practices to prevent further risk. Read More HERE&#8230;<\/p>\n","protected":false},"author":2,"featured_media":60445,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_layout":"default_layout","footnotes":""},"categories":[61],"tags":[9510,10938,9513,9509],"class_list":["post-60444","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-trendmicro","tag-trend-micro-research-articles-news-reports","tag-trend-micro-research-artificial-intelligence-ai","tag-trend-micro-research-malware","tag-trend-micro-research-research"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Claude Code Packaging Error Remains a Lure in an Active Campaign: What Defenders Should Do 2026 | ThreatsHub Cybersecurity News<\/title>\n<meta name=\"description\" content=\"ThreatsHub Cybersecurity News | ThreatsHub.org | Cloud Security &amp; Cyber Threats 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