{"id":"MAL-2026-6767","summary":"Malicious code in @marketfront/basemarkettemplate (npm)","details":"The @marketfront/basemarkettemplate package is part of a 25-package malicious campaign batch-published to the @marketfront npm scope by npm user 'marketfront' (marketfront@tutamail.com) within a roughly 3-minute window on 2026-07-01. All packages in the campaign were published at version 7.0.0 and use e-commerce/marketing frontend component names as cover.\n\nThe package declares a postinstall hook (node scripts/postinstall.js) that executes heavily obfuscated (obfuscator.io-style) code automatically at npm install time. Static analysis of the decoded payload revealed a credential harvester that dynamically requires fs, os, http, https, zlib, path and dns, then reads approximately 20 sensitive credential files including ~/.ssh, ~/.aws/credentials, ~/.kube/config, ~/.docker/config.json, ~/.npmrc, ~/.netrc, ~/.pgpass, ~/.git-credentials, ~/.env and ~/.bash_history. Collected data is exfiltrated via a gzip-compressed HTTPS POST with a custom X-Secret header to the path /api/v1/events, alongside a DNS resolver beacon. The command-and-control host is concealed behind an additional RC4+XOR encryption layer around an embedded configuration blob and was not statically resolved.\n\nThe decoded behavioral payload (module requires, credential-file target list, exfiltration headers and endpoint) is byte-for-byte identical across sampled packages in the campaign. The campaign shares tooling and infrastructure patterns (obfuscated postinstall credential harvester, X-Secret header, /api/v1/events exfiltration path, RC4-concealed C2) with the earlier @emcd-vue campaign, indicating the same actor rotating scopes and disposable maintainer emails.\n\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (66d3e4ea5397dbe076b14c24ec39301f31e7c1c3587b3aa98a1cadb9f3e89aa7)\nThe package ships an obfuscated scripts/postinstall.js (RC4 + shuffled string-array obfuscation, NODE_OPTIONS/argv inspector-flag check, random startup delay) that npm runs automatically on install via package.json's `postinstall: node scripts/postinstall.js` hook. When executed, the decoded payload collects host identifiers (hostname, username, homedir, platform, npm_config_user_agent), Windows environment variables (USERDOMAIN, COMPUTERNAME, APPDATA, LOCALAPPDATA, TEMP, PROGRAMDATA), and reads installer-owned secret files the package never wrote — shell history (.bash_history,.zsh_history), ~/.ssh, ~/.aws, ~/.netrc, and browser profile directories — using readFileSync/readdirSync helpers over byte-array-decoded path strings. The collected data is JSON-serialized, XOR-encrypted, and transmitted over two channels: an HTTPS POST to a runtime-selected hostname, and a DNS-tunnel that base32-encodes the payload into subdomain labels resolved via node's `dns` module. The package is scoped `@marketfront/*` and presents itself as an internal HTTP client with fabricated corporate URLs (github.marketfront.io, jira.marketfront.io) and `private: false` — the classic dependency-confusion shape targeting an organization that uses that scope internally. No real library functionality is shipped; the package is a pure delivery vehicle for the postinstall payload.\n","modified":"2026-07-06T05:16:47.796750310Z","published":"2026-07-02T00:00:00Z","database_specific":{"malicious-packages-origins":[{"versions":["7.0.0"],"id":"IN-MAL-2026-008023","import_time":"2026-07-06T04:58:10.581847076Z","source":"amazon-inspector","modified_time":"2026-07-06T03:19:54Z","sha256":"66d3e4ea5397dbe076b14c24ec39301f31e7c1c3587b3aa98a1cadb9f3e89aa7"}]},"references":[{"type":"REPORT","url":"https://safedep.io/marketfront-dependency-confusion-campaign/"},{"type":"PACKAGE","url":"https://www.npmjs.com/package/@marketfront/basemarkettemplate/v/7.0.0"}],"affected":[{"package":{"name":"@marketfront/basemarkettemplate","ecosystem":"npm","purl":"pkg:npm/%40marketfront%2Fbasemarkettemplate"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"versions":["7.0.0"],"database_specific":{"cwes":[{"description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code","cweId":"CWE-506"},{"cweId":"CWE-506","name":"Embedded Malicious Code","description":"The product contains code that appears to be malicious in nature."}],"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@marketfront/basemarkettemplate/MAL-2026-6767.json","indicators":{"evidence_files":[{"path":"scripts/postinstall.js","tlsh":"c3f3db892740d457d85fdfbfbe61e6f4e1197cc6c3c1284af714b92cf89852a9a48b80","sha256":"5207b9369b835735785ca13d2fc6bde3184fa62af8a118f2fb8e28da01ecc319"},{"path":"package.json","tlsh":"2a118c31c6218d3363d015aaed746e45f5350d1b0986fc1e23c3416c4b8e1aa21fda7e","sha256":"9112656534aeee20e4e322a9fb6c6a2a5b0f4f6137ef733d53cbee922d4dfb7e"}],"package_integrity":[{"hashes":{"sha1":"d3e72bda6453966cdc6a6ec7c60f1fdbf2345f82","sha512_sri":"sha512-iP37a8eAB7wSKcKmvEgPCX8rBW+PMgC5h8aZgYBHf6J6WyxFoC5J2GnIG3kxS2aaLhaixdaG38kYYvVTpoe0CQ=="},"filename":"basemarkettemplate-7.0.0.tgz"}]}}}],"schema_version":"1.7.5","credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"},{"name":"SafeDep","contact":["https://safedep.io"],"type":"FINDER"}]}