{"answers":{"affected":"1 open source package ship an affected version, including @marketfront/customdealsfeed.","exploited":"There is no known exploitation of MAL-2026-6772 in the wild and no public exploit code.","fix":"Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.","what":"MAL-2026-6772 is a malicious package in @marketfront/customdealsfeed, published on 2 Jul 2026."},"fix_prompt":"MAL-2026-6772 is a malicious package: @marketfront/customdealsfeed (npm). Every version was published to cause harm.\n\nTask:\n1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.\n2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.\n3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.\n4. If the package is not used anywhere, say so and change nothing.\n\nReference: https://insights.sbomify.com/MAL-2026-6772/ (Markdown: https://insights.sbomify.com/MAL-2026-6772/index.md)","id":"MAL-2026-6772","markdown":"https://insights.sbomify.com/MAL-2026-6772/index.md","name":"MAL-2026-6772","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"The @marketfront/customdealsfeed 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\nThe package has no legitimate runtime surface: package.json 'main' re-exports../src/index.js which is not shipped in the tarball, so require() throws. The only executed code is scripts/postinstall.js, a ~165KB obfuscator.io-style payload that runs automatically on npm install. It uses a string-array decoder plus RC4 and XOR routines to hide its behavior, and contains a sandbox-evasion guard that suppresses execution when NODE_OPTIONS or the package name match hardcoded analysis-environment values. At install time the decoded payload collects host and account identity (os.userInfo, hostname, platform, arch, network interfaces), enumerates environment variables (including USERDOMAIN, COMPUTERNAME, APPDATA, LOCALAPPDATA, TEMP, PROGRAMDATA, npm_config_user_agent and a full process.env dump), executes shell commands via child_process, and reads candidate credential/wallet/keystore files under APPDATA/LOCALAPPDATA/TEMP/PROGRAMDATA using a JSON key/value walker. The collected data is bundled into an encrypted JSON blob and transmitted over HTTPS to a hardcoded endpoint, with a DNS side-channel that splits ciphertext into ~50-character chunks encoded as sub.sub.HOST queries to bypass egress filtering. The @marketfront scope and README instruction to add 'registry=https://npm.marketfront.io' to.npmrc — pointing at non-existent infrastructure — is a dependency-confusion lure targeting organizations that have not correctly pinned an internal scope, with a fake 'anonymous telemetry to telemetry.marketfront.io' cover story pre-authorizing the observed network activity.","ecosystems":["npm"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":false,"headline":"Malicious code in @marketfront/customdealsfeed (npm)","id":"MAL-2026-6772","indexable":true,"kev":null,"kind":"malicious","links":{"ecosystem":"npm","product":null,"products":[],"type":null,"year":"2026"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":[],"package":"@marketfront/customdealsfeed","purl":"pkg:npm/%40marketfront%2Fcustomdealsfeed","source":"MAL-2026-6772"}],"products":null,"published":"2026-07-02","related":[],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"OpenSSF Malicious Packages","prefix":"MAL"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":null,"url":"https://insights.sbomify.com/MAL-2026-6772/"}