MAL-2026-12889

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-atom-bnpl-range/MAL-2026-12889.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12889
Published
2026-08-05T14:56:15Z
Modified
2026-08-05T15:50:44Z
Summary
Malicious code in bnpl-blocks-atom-bnpl-range (npm)
Details

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

Source: amazon-inspector (0d1d5c6a3a1bb7d8a26a77aada7abbec439922ebceec32b8608909ad2ee8acac)

On require of index.js, shim.js executes immediately and fetches an opaque binary from one of three string-concatenation-obfuscated origins (oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev) with a DNS TXT fallback under *.dl.wel1.ru. The fetched bytes are written to /tmp/.cache on Unix or %TEMP%\dotnet_diag_.exe on Windows, chmod 0755, and spawned detached via /bin/sh -c or cmd. No hash or signature verification is performed. Hostnames, the DNS resolver domain, and the child_process module name are assembled at runtime via array-join concatenation to evade static analysis. The package name/version, masqueraded staging filename (dotnet_diag), dotfile staging path, and covert DNS-TXT fallback channel are consistent with a targeted supply-chain dropper.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015503",
            "import_time": "2026-08-05T15:19:54.928803527Z",
            "modified_time": "2026-08-05T14:56:15Z",
            "sha256": "0d1d5c6a3a1bb7d8a26a77aada7abbec439922ebceec32b8608909ad2ee8acac",
            "source": "amazon-inspector",
            "versions": [
                "35.6.6"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-atom-bnpl-range

Package

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

Affected ranges

Affected versions

35.*
35.6.6

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": "_shim.js",
            "sha256": "15abd7be5dc0c2b1108045153477d821d8eff3edd1be48ed86870bed3a4f8ba8",
            "tlsh": "b7a1a79a16ba71084bb097e4c7174816f65bf66333c0c588fb9ca5885f7252483b2efc"
        }
    ],
    "package_integrity": [
        {
            "filename": "bnpl-blocks-atom-bnpl-range-35.6.6.tgz",
            "hashes": {
                "sha1": "4aa988dc75d0123488a811cb5d1ea7400a20d2b8",
                "sha512_sri": "sha512-tezjpFTSIL8Facz6Kzv4JMGtj5aHDcto3xxcFCwYPvZC4riChaZZDB09th3l3sz/+3plcFoiae8PTJabDoLAvw=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-atom-bnpl-range/MAL-2026-12889.json"