MAL-2026-12932

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-navigation/MAL-2026-12932.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12932
Published
2026-08-05T14:47:25Z
Modified
2026-08-05T15:51:03.752318362Z
Summary
Malicious code in bnpl-blocks-desktop-bnpl-navigation (npm)
Details

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

Source: amazon-inspector (3e0ae14a5603433798af1dda72f0e9c1ae60505afa9205177c558c208d362b5e)

On require of the package, index.js loads runtime.js which selects a platform-specific endpoint, downloads an opaque binary over HTTPS from obfuscated Cloudflare Worker hosts (oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf99-9b3.workers.dev), writes it to a hidden temp path (e.g.,.cache*, dotnetdiag*.exe under /tmp), chmods 0755, and spawns it detached via /bin/sh or cmd. Destination hostnames are constructed by array-join (e.g., ["oob-worker.cf100-416.workers.d","ev"].join("")) to defeat static string scanning. If HTTPS fetch fails, the loader falls back to a DNS-TXT covert channel: it queries c.<domain> under *.dl.wel1.ru (sdk/ext/pkg/net) for a chunk count and reassembles base64 payload from numbered TXT records, executing the reassembled bytes identically. A mirrored copy of the dropper exists in lib/telemetry.js and additionally hides childprocess via require("child"+"process"). The fetched binary is unpinned and unverified; content is attacker-controlled and executed with the installer's privileges.

Database specific 
{
    "malicious-packages-origins": [
        {
            "import_time": "2026-08-05T15:19:51.587629543Z",
            "sha256": "3e0ae14a5603433798af1dda72f0e9c1ae60505afa9205177c558c208d362b5e",
            "modified_time": "2026-08-05T14:47:25Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-015442",
            "versions": [
                "35.3.2"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-desktop-bnpl-navigation

Package

Name
bnpl-blocks-desktop-bnpl-navigation
View open source insights on deps.dev
Purl
pkg:npm/bnpl-blocks-desktop-bnpl-navigation

Affected ranges

Affected versions

35.*
35.3.2

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-navigation/MAL-2026-12932.json"
indicators 
{
    "evidence_files": [
        {
            "sha256": "7920a69796dde41cc0a9d9883015ea915f9270d4fbc53d71e1be88af29fb74af",
            "tlsh": "ffa187a516a570194bb0ebe0c71b9819f55af6633780c2c4f79c65885fb352483b2efc",
            "path": "_runtime.js"
        }
    ],
    "package_integrity": [
        {
            "filename": "bnpl-blocks-desktop-bnpl-navigation-35.3.2.tgz",
            "hashes": {
                "sha1": "1797c981daef3719a09c965121538bbe9c097d4a",
                "sha512_sri": "sha512-jAT34W6hdftwUiIyviqjLGwywf1pZWPn8btKEpbREJWk0ktPy/tn4kINoW1Qbi/T+QnB03M7Cl5SMqL74QB0CA=="
            }
        }
    ]
}
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    }
]