--- title: The Meccha Chameleon Malware Incident | daily.dev description: A malicious Steam Workshop mod for the game Meccha Chameleon was found to contain a hidden remote code execution payload embedded in Unreal Engine asset... canonical: https://daily.dev/posts/the-meccha-chameleon-malware-incident-9sp0v7gim twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: The Meccha Chameleon Malware Incident | daily.dev og:description: A malicious Steam Workshop mod for the game Meccha Chameleon was found to contain a hidden remote code execution payload embedded in Unreal Engine asset... og:url: https://daily.dev/posts/the-meccha-chameleon-malware-incident-9sp0v7gim og:image: https://api.daily.dev/og/posts/9Sp0v7GIm.png og:image:alt: The Meccha Chameleon Malware Incident og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # The Meccha Chameleon Malware Incident **[Eric Parker](https://daily.dev/sources/ericparker)** · 21 min read · 0 upvotes · 0 comments ## Summary A malicious Steam Workshop mod for the game Meccha Chameleon was found to contain a hidden remote code execution payload embedded in Unreal Engine asset registry metadata. The mod dropped a batch file that used PowerShell to fetch a second-stage RAT payload. The developer patched the vulnerability the same day it was reported. Separately, a Discord server associated with the game was compromised and used to spread false claims that the game's official update was malicious — an analysis of the patched game binary found no evidence of tampering, concluding the Discord incident was a hoax designed to harm the game's reputation. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [MECCHA CHAMELEON can't hide from the RCE](https://daily.dev/posts/meccha-chameleon-can-t-hide-from-the-rce-pg0ho2oxw) · Aikido Security · 0 upvotes · 0 comments --- Tags: [#malware](https://daily.dev/tags/malware), [#unreal-engine](https://daily.dev/tags/unreal-engine), [#steam](https://daily.dev/tags/steam), [#reverse-engineering](https://daily.dev/tags/reverse-engineering) [View this post on daily.dev](https://daily.dev/posts/the-meccha-chameleon-malware-incident-9sp0v7gim) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"The Meccha Chameleon Malware Incident","url":"https://daily.dev/posts/the-meccha-chameleon-malware-incident-9sp0v7gim","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/the-meccha-chameleon-malware-incident-9sp0v7gim"},"datePublished":"2026-07-25T19:35:35.613Z","dateModified":"2026-07-25T19:35:55.076Z","description":"A malicious Steam Workshop mod for the game Meccha Chameleon was found to contain a hidden remote code execution payload embedded in Unreal Engine asset...","image":"https://i.ytimg.com/vi/RB9MrJ2fNqE/sddefault.jpg","thumbnailUrl":"https://i.ytimg.com/vi/RB9MrJ2fNqE/sddefault.jpg","isAccessibleForFree":true,"articleSection":"Eric Parker","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Eric Parker","logo":"https://media.daily.dev/image/upload/s--vVcOpkjx--/f_auto/v1724391603/logos/ericparker","url":"https://daily.dev/sources/ericparker"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/the-meccha-chameleon-malware-incident-9sp0v7gim","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"malware,unreal-engine,steam,reverse-engineering","timeRequired":"PT21M","video":{"@type":"VideoObject","name":"The Meccha Chameleon Malware Incident","description":"A malicious Steam Workshop mod for the game Meccha Chameleon was found to contain a hidden remote code execution payload embedded in Unreal Engine asset...","thumbnailUrl":"https://i.ytimg.com/vi/RB9MrJ2fNqE/sddefault.jpg","uploadDate":"2026-07-25T19:35:35.613Z","duration":"PT21M","url":"https://api.daily.dev/r/9Sp0v7GIm","embedUrl":"https://www.youtube.com/embed/RB9MrJ2fNqE"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Eric Parker","item":"https://daily.dev/sources/ericparker"},{"@type":"ListItem","position":3,"name":"The Meccha Chameleon Malware Incident"}]} ```