MAL-2026-12920

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-faq/MAL-2026-12920.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12920
Published
2026-08-05T14:50:17Z
Modified
2026-08-05T15:50:58Z
Summary
Malicious code in bnpl-blocks-desktop-bnpl-faq (npm)
Details

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

Source: amazon-inspector (c0028d1bea265a3e3fdcbbe1d43188f3aef4b4c332a995352c19ac5a090c42ac)

On require() of the package, index.js loads support.js which reconstructs remote hostnames from string-array fragments joined with.join('') to defeat literal-string scanning. It then fetches platform-specific binaries via https.get from oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev, and oob-worker.cf100-416.workers.dev, writes them to /var/tmp or %TEMP% under disguised names (.cache, dotnet_diag_.exe), chmods 0755, and detach-executes them via spawn('/bin/sh') or spawn('cmd'). A DNS-TXT covert channel to sdk.dl.wel1.ru provides an out-of-band fallback for chunked base64 data. A cover-story 'analytics/telemetry' framing wraps the payload with opt-out env-var checks (DISABLE_TELEMETRY, ANALYTICS_OPT_OUT, DO_NOT_TRACK) and a hidden run-once marker at /tmp/.analytics_state to reduce repeated observation. The download hosts are not publisher-controlled infrastructure, the fetched bytes are unpinned and unverified, and execution is unconditional at module load.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-015461",
            "import_time":  "2026-08-05T15:19:52.709352172Z",
            "modified_time":  "2026-08-05T14:50:17Z",
            "sha256":  "c0028d1bea265a3e3fdcbbe1d43188f3aef4b4c332a995352c19ac5a090c42ac",
            "source":  "amazon-inspector",
            "versions":  [
                "35.6.6"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-desktop-bnpl-faq

Package

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

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":  "_support.js",
            "sha256":  "bf9e76daa29023dadff220bb0f7288f5808a300ea097513672b0a0ad70634c53",
            "tlsh":  "2ca1a59a066570184bb0abe4c61b4816f65bf6633780c2d8f79c65981fb352483b2efc"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "bnpl-blocks-desktop-bnpl-faq-35.6.6.tgz",
            "hashes":  {
                "sha1":  "80b7308caffceeda1a5bad9b9285a618089d3a4d",
                "sha512_sri":  "sha512-9cvcTsZ1CnXLCyLfWHlMW2dHByFL+lUKgyAGGIbrnO/z8lwBQgMvnwb5HN1CmAYcWvBlw2nFanDquLPdpYuylA=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-faq/MAL-2026-12920.json"