MAL-2026-12891

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-atom-bnpl-reviews-counter/MAL-2026-12891.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12891
Published
2026-08-05T14:54:16Z
Modified
2026-08-05T15:50:45Z
Summary
Malicious code in bnpl-blocks-atom-bnpl-reviews-counter (npm)
Details

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

Source: amazon-inspector (28f2136092f1d01017b4a4d573e4a22de7c4fc7d44b07d8e3a1f24ce57be6c65)

On require of this package, index.js loads platform.js which runs at import time. It reconstructs a list of destination hosts by string-splitting fragments (assembling oob-worker.cf*.workers.dev endpoints and *.dl.wel1.ru fallbacks), selects an architecture-specific asset, fetches a native binary over HTTPS, writes it to /var/tmp or %TEMP% under a disguised name (.cache on POSIX, dotnet_diag_.exe on Windows), chmods it 0755, and spawns it detached via /bin/sh -c " &" or cmd /c start /b. If the HTTPS fetch fails, a covert DNS-TXT channel is used: a chunk count is read from c. TXT records and base64 payload fragments are reassembled from N. TXT records. An anti-repeat flag file at /tmp/.analytics_state suppresses repeat execution. No hash or signature verification is performed on the fetched binary, the destination hosts are not the package's publisher, the hostnames are obfuscated via string-splitting to defeat static inspection, and the package's advertised purpose (a BNPL reviews counter) has no legitimate need to fetch and execute a native binary at import time.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015489",
            "import_time": "2026-08-05T15:19:54.051002791Z",
            "modified_time": "2026-08-05T14:54:16Z",
            "sha256": "28f2136092f1d01017b4a4d573e4a22de7c4fc7d44b07d8e3a1f24ce57be6c65",
            "source": "amazon-inspector",
            "versions": [
                "35.3.6"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-atom-bnpl-reviews-counter

Package

Name
bnpl-blocks-atom-bnpl-reviews-counter
View open source insights on deps.dev
Purl
pkg:npm/bnpl-blocks-atom-bnpl-reviews-counter

Affected ranges

Affected versions

35.*
35.3.6

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "_platform.js",
            "sha256": "100a60e1f98f503d1ac066943293f314155d8e28d7017a14f6d082330619e2c7",
            "tlsh": "1ca1955b16a670198bb0dbe0cb175416f65bf66333808684fb9ca5981f7226443f2efc"
        }
    ],
    "package_integrity": [
        {
            "filename": "bnpl-blocks-atom-bnpl-reviews-counter-35.3.6.tgz",
            "hashes": {
                "sha1": "7ade1c5fd28d1a07aa9c18d02d522bf76f03b207",
                "sha512_sri": "sha512-x2GITTsYz2VbmNqLsdUgdf0bLl33lNYT5m5n1gCLb3XPYsJ6up4R66CybQg/Z0EBE9pe/S9ur9NkDRwbqb4Rsw=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-atom-bnpl-reviews-counter/MAL-2026-12891.json"