MAL-2026-6765

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@marketfront/bannerpopup/MAL-2026-6765.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-6765
Published
2026-07-02T00:00:00Z
Modified
2026-07-08T20:46:56Z
Summary
Malicious code in @marketfront/bannerpopup (npm)
Details

The @marketfront/bannerpopup 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.

The 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.

The 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.

-= Per source details. Do not edit below this line.=-

Source: amazon-inspector (ee3a07add5b7558bdb1e62d55cef72d746c5ac6e86051745dfbf4cf8b3307e3e)

The package was found to contain malicious code or consuming dependency that contains malicious code

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-008582",
            "import_time": "2026-07-08T20:32:47.011091129Z",
            "modified_time": "2026-07-08T20:31:56Z",
            "sha256": "ee3a07add5b7558bdb1e62d55cef72d746c5ac6e86051745dfbf4cf8b3307e3e",
            "source": "amazon-inspector",
            "versions": [
                "7.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / @marketfront/bannerpopup

Package

Name
@marketfront/bannerpopup
View open source insights on deps.dev
Purl
pkg:npm/%40marketfront/bannerpopup

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

7.*
7.0.0

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    },
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "package_integrity": [
        {
            "filename": "bannerpopup-7.0.0.tgz",
            "hashes": {
                "sha1": "0f2a0369906f176b0f58e96de2ca8f1a298fd9ca",
                "sha512_sri": "sha512-NoAg3AX0od6lJ41cLjbCZFZOmKYmXu+cJsVqJCe23ky0o4NOuFGAtGt6gS5xYNZQ5bYLjm/A5lLQjgGnJfNqoQ=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@marketfront/bannerpopup/MAL-2026-6765.json"