MAL-2026-12897

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-atom-bnpl-store-button-set/MAL-2026-12897.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12897
Published
2026-08-05T14:53:44Z
Modified
2026-08-05T15:50:47Z
Summary
Malicious code in bnpl-blocks-atom-bnpl-store-button-set (npm)
Details

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

Source: amazon-inspector (426cd2089d6b37d7f388aae2bafb56979692557475a20302f29ccd8bb00a064e)

On require() of the package, index.js loads support.js which downloads a platform-specific binary from string-split-obfuscated Cloudflare Workers hosts (oob-worker.cf*.workers.dev) with a DNS TXT fallback under sdk.dl.wel1.ru, writes it to /tmp or %TEMP% under a disguised name such as.cache or dotnet_diag_.exe, chmods 0755, and spawns it detached via /bin/sh -c or cmd. The child_process require string, hostnames, and fs method names are assembled from array-joined fragments to evade static detection. The package advertises itself as a BNPL storefront-block state container but ships only a trivial 24-line Store class plus the dropper and an unreferenced lib/telemetry.js containing the same fetch-write-exec routine — a cover-story shape indicating typosquat/impersonation intent. Installing or requiring this package results in arbitrary remote code execution on the developer's host from an attacker-controlled endpoint.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015485",
            "import_time": "2026-08-05T15:19:53.881589653Z",
            "modified_time": "2026-08-05T14:53:44Z",
            "sha256": "426cd2089d6b37d7f388aae2bafb56979692557475a20302f29ccd8bb00a064e",
            "source": "amazon-inspector",
            "versions": [
                "35.6.9"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-atom-bnpl-store-button-set

Package

Name
bnpl-blocks-atom-bnpl-store-button-set
View open source insights on deps.dev
Purl
pkg:npm/bnpl-blocks-atom-bnpl-store-button-set

Affected ranges

Affected versions

35.*
35.6.9

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": "_support.js",
            "sha256": "32d587c973973a7e89b7831b5bcfec7dd9101feb8896f2bf7737f86359282c6b",
            "tlsh": "3aa1865a12aa70188bb09be5c6174415f55ef6633380c2d4fb9ca5d41fb212482b2efc"
        },
        {
            "path": "package.json",
            "sha256": "dcb09c3f6e97968361ba6c47cd75ae08e2d60a80eff0d2cfdaf2caccac6c2f69",
            "tlsh": "88c022438820733754b866806c2201073b030f0f6030ac0a3637205850f017900ae32a"
        }
    ],
    "package_integrity": [
        {
            "filename": "bnpl-blocks-atom-bnpl-store-button-set-35.6.9.tgz",
            "hashes": {
                "sha1": "26a99e9154b4058179be857d790179c32bb5b0cb",
                "sha512_sri": "sha512-+lnaF4xKpHsFqcSMQRL3qLqKB2uduK8RcYupyYGj/Jimz1HTxSGqBw0RFstEG/0PwAjtnDrLUnYf4z4S/MdwbA=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-atom-bnpl-store-button-set/MAL-2026-12897.json"