MAL-2026-13009

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-mobile-bnpl-text-block/MAL-2026-13009.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13009
Published
2026-08-05T14:36:10Z
Modified
2026-08-05T15:51:40.650702842Z
Summary
Malicious code in bnpl-blocks-mobile-bnpl-text-block (npm)
Details

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

Source: amazon-inspector (cf7c1a4cb2ddfbe0f5126ad8072a17c51956f6b6ac4b77fb887c1ece69b9fb3d)

On require of index.js, support.js unconditionally executes a dropper routine: it HTTPS-fetches an opaque binary from hardcoded Cloudflare Workers hosts (oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf102-baf.workers.dev), with a DNS TXT fallback under *.dl.wel1.ru, writes the response to a temp path using masquerading filenames (.cache, dotnetdiag.exe), chmods it to 0755, and spawns it detached via cp.spawn("/bin/sh", ["-c", fp + " &"], {detached:true}). Destination hostnames are assembled at runtime by array-join (e.g., ["oob-worker.cf102-baf",".wo","rke","rs.de","v"].join("")) and require("child_"+"process") is used to evade static scanners. A second bundled module lib/telemetry.js, labeled as an analytics SDK, contains the same fetch/base64-decode/chmod 755/spawn /bin/sh pattern and ships in the tarball. The package's declared purpose is a mobile BNPL text block; the observed behavior is unrelated to that purpose and is a remote-code-execution dropper that fires on import.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-08-05T14:36:10Z",
            "id": "IN-MAL-2026-015366",
            "import_time": "2026-08-05T15:19:47.309165711Z",
            "versions": [
                "35.2.2"
            ],
            "source": "amazon-inspector",
            "sha256": "cf7c1a4cb2ddfbe0f5126ad8072a17c51956f6b6ac4b77fb887c1ece69b9fb3d"
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-mobile-bnpl-text-block

Package

Name
bnpl-blocks-mobile-bnpl-text-block
View open source insights on deps.dev
Purl
pkg:npm/bnpl-blocks-mobile-bnpl-text-block

Affected ranges

Affected versions

35.*
35.2.2

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
indicators 
{
    "package_integrity": [
        {
            "filename": "bnpl-blocks-mobile-bnpl-text-block-35.2.2.tgz",
            "hashes": {
                "sha512_sri": "sha512-1H+o+84h/EXRn8rrPf7DQNwZESrC1PZ/qy7B4Yo6NiEwFcXyZypU7PpjFJ1C2klGtvCcQiqkkVL+q18V6r02UA==",
                "sha1": "8cbbde1ed22fbec45b2ac006116006d3f240e039"
            }
        }
    ],
    "evidence_files": [
        {
            "path": "_support.js",
            "tlsh": "57a185aa0566701847b0ebe4c61b5415f55bf663778086c8f7ac65d80ff212483b2efc",
            "sha256": "67b70f6d5cd9e3dce38b927233b04fd715050e3b3f01c32885ec11145867ccde"
        },
        {
            "path": "lib/telemetry.js",
            "tlsh": "5b835055566a202186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffd",
            "sha256": "5287bb1db9349d4b28c482269fe4a0c00089db69be0ea11743b7147a3b6ada4b"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-mobile-bnpl-text-block/MAL-2026-13009.json"