MAL-2026-12934

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-notification/MAL-2026-12934.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12934
Published
2026-08-05T14:48:08Z
Modified
2026-08-05T15:51:04.949231926Z
Summary
Malicious code in bnpl-blocks-desktop-bnpl-notification (npm)
Details

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

Source: amazon-inspector (0de35e4aa0a895b91234b28bdbe2413b0c6d855758348954f2a438185165de00)

On require() of this package, index.js loads runtime.js which selects an OS/arch-specific payload URL, downloads an opaque binary from one of several Cloudflare Workers hosts whose hostnames are reassembled at runtime from split string fragments (oob-worker.cf100-416.workers.dev, cf99-9b3, cf102-baf, cf101-adf.workers.dev), with a DNS TXT-record fallback channel over sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru that reassembles base64 chunks from numbered subdomains. The downloaded bytes are written to a hidden path under /tmp or %TEMP% disguised as 'analyticsstate'/'dotnet_diag', chmod'd 0755 on POSIX, and spawned detached via /bin/sh -c or cmd.exe. There is no pinning, no signature check, no publisher relationship between the destination hosts and the package's declared purpose (a 'BNPL notification' library). Execution is gated by a stamp file for rate-limiting and by opt-out environment variables.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015447",
            "import_time": "2026-08-05T15:19:52.001232912Z",
            "sha256": "0de35e4aa0a895b91234b28bdbe2413b0c6d855758348954f2a438185165de00",
            "modified_time": "2026-08-05T14:48:08Z",
            "source": "amazon-inspector",
            "versions": [
                "35.8.9"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-desktop-bnpl-notification

Package

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

Affected ranges

Affected versions

35.*
35.8.9

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": "_runtime.js",
            "tlsh": "eaa197aa156670184bb0dbe4c6075815f65bf6a373c09294f79c659c0ff212483b2efc",
            "sha256": "81813e198041462c421e8b32eada6df20d1e1af8db0707500fe08ec3ed381d41"
        }
    ],
    "package_integrity": [
        {
            "filename": "bnpl-blocks-desktop-bnpl-notification-35.8.9.tgz",
            "hashes": {
                "sha1": "d437c57ee14da83706d57deb41afb4aeb6da9779",
                "sha512_sri": "sha512-/dxbo/aPTTDkRWOIhiSw5wOu5ABRITAG4xKszshXKS1lHOSZ59XTg5OS5aZQjsCHlM1oo8giVQk6DtaupM48dQ=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-notification/MAL-2026-12934.json"