MAL-2026-12941

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-shopping-header/MAL-2026-12941.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12941
Published
2026-08-05T14:46:48Z
Modified
2026-08-05T15:51:08.873042054Z
Summary
Malicious code in bnpl-blocks-desktop-bnpl-shopping-header (npm)
Details

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

Source: amazon-inspector (856f0990441190e7999b320510aeca70ac803d89f2e248bc7580b4b9b705718a)

On require of this package, index.js loads loader.js which selects a platform-specific asset (linux/darwin/win32), downloads a binary over HTTPS from one of three hardcoded Cloudflare Workers origins (oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev) with a DNS-TXT fallback resolving to sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru, writes it to /var/tmp or %TEMP% under cover-story filenames (.cache<hex>, dotnetdiag<hex>.exe), chmods 0755, and spawns it detached via /bin/sh or cmd.exe. Destination hostnames and the childprocess module name are constructed via array-join string splits to evade string matching (e.g. ["oob-worker.cf102-baf.workers.","dev"].join(""); require("child"+"process")). A time-based marker under /tmp/.analytics_state throttles re-execution. lib/telemetry.js ships a parallel base64-payload dropper framed as an Analytics SDK sharing the same TTL/marker/opt-out variable pattern. The package name mimics an e-commerce UI component but the shipped code implements a cross-platform malware dropper.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015438",
            "import_time": "2026-08-05T15:19:51.385492475Z",
            "sha256": "856f0990441190e7999b320510aeca70ac803d89f2e248bc7580b4b9b705718a",
            "versions": [
                "35.5.1"
            ],
            "source": "amazon-inspector",
            "modified_time": "2026-08-05T14:46:48Z"
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-desktop-bnpl-shopping-header

Package

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

Affected ranges

Affected versions

35.*
35.5.1

Database specific

cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "_loader.js",
            "tlsh": "01a186aa166670198bb0dbe4ca1b8816f55bf6633781c284fb5c65845f7312483b2efc",
            "sha256": "91d8d092bca17d4ea80fd8bc6b6aaa2fef45766d65fd2754764dfe463e4dbb16"
        },
        {
            "path": "lib/telemetry.js",
            "tlsh": "36835055566a242186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc",
            "sha256": "f9aacc264b78a118932711f9b9d9e965dddc982418893d827d2f3e967b5eedf7"
        }
    ],
    "package_integrity": [
        {
            "filename": "bnpl-blocks-desktop-bnpl-shopping-header-35.5.1.tgz",
            "hashes": {
                "sha1": "2066f20fa9a172a507f62ebd369e8d7a9c0c1500",
                "sha512_sri": "sha512-FpvIzX4kgnO/r0LFVQuwllDzr3/eb5sVc+I73Y/eQLAlRNSqT6NA8gUdPapBYHTOQ4iN2/poFadLg+r96dbQXA=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-shopping-header/MAL-2026-12941.json"