MAL-2026-13007

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-mobile-bnpl-tab-buttons/MAL-2026-13007.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13007
Published
2026-08-05T14:37:33Z
Modified
2026-08-05T15:51:39Z
Summary
Malicious code in bnpl-blocks-mobile-bnpl-tab-buttons (npm)
Details

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

Source: amazon-inspector (34cc219a990162733e49aafc255a8abe4c4acd3fc56bce77ae31800fd4791678)

On require() of the package, index.js side-loads adapter.js which selects a platform-specific asset, downloads bytes over HTTPS from hostnames reconstructed at runtime by joining split string fragments (oob-worker.cf10{0..3}-*.workers.dev), writes the bytes to a disguised temp file (/tmp/.cache on POSIX, %TEMP%/dotnet_diag_.exe on Windows), sets mode 0o755, and spawns the file detached via /bin/sh -c or cmd.exe /c start. A DNS-TXT fallback channel queries c. then N. records under *.dl.wel1.ru, base64-decodes the concatenated chunks, and executes the resulting binary when the HTTPS mirrors fail. The package advertises itself as a native bridge with a trivial no-op class in index.js; the dropper logic is hidden in _adapter.js with cover-story variable names (analytics_state, telemetry). Hostname reconstruction from split literals is a deliberate static-scanner evasion technique, and DNS-TXT payload staging is a covert-channel technique to bypass HTTPS egress filtering.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015375",
            "import_time": "2026-08-05T15:19:47.998503964Z",
            "modified_time": "2026-08-05T14:37:33Z",
            "sha256": "34cc219a990162733e49aafc255a8abe4c4acd3fc56bce77ae31800fd4791678",
            "source": "amazon-inspector",
            "versions": [
                "35.7.1"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-mobile-bnpl-tab-buttons

Package

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

Affected ranges

Affected versions

35.*
35.7.1

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": "_adapter.js",
            "sha256": "bf7162ff71962781fee86f486dbf693d84acafd7be42301783907ad6d4bfc16b",
            "tlsh": "98a1885a0595b0084bb0e7e4c61b8825f56af6633681c2d4f75c69885f73524c3b2dfc"
        }
    ],
    "package_integrity": [
        {
            "filename": "bnpl-blocks-mobile-bnpl-tab-buttons-35.7.1.tgz",
            "hashes": {
                "sha1": "4ce4fa38729bdc8b270930c80d1158df555550fa",
                "sha512_sri": "sha512-kFevNY+pDhK81K8qdv/QTKHvv9ANO9Hl8zvT4edbeksuhWimkRHSEhnyerny7jL7oUhrcWQwtfDdpzMDHxMk6Q=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-mobile-bnpl-tab-buttons/MAL-2026-13007.json"