MAL-2026-13203

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dws-frontend-dws-frontend-core/MAL-2026-13203.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13203
Published
2026-08-05T15:07:27Z
Modified
2026-08-05T15:53:11.402369229Z
Summary
Malicious code in dws-frontend-dws-frontend-core (npm)
Details

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

Source: amazon-inspector (7fb73f65c18cf45f29f533ef6b9ab1278412909686c0750018f9d35170ed39f2)

On require() of this package, index.js loads support.js which downloads a platform-specific binary over HTTPS from author-controlled hosts under oob-worker.cf1*.workers.dev (with a DNS TXT-record base64 fallback under c.*.dl.wel1.ru). Destination hostnames are assembled via.join('') on split string fragments to evade static analysis. The fetched bytes are written to /var/tmp/.cache<hex> on Unix or %TEMP%\dotnetdiag<hex>.exe on Windows — filenames disguised as a dotfile cache or a Microsoft.NET diagnostics binary — chmod 0755, and spawned detached via /bin/sh -c or cmd. A /tmp/.analyticsstate marker file throttles re-execution, and the code pretends to honor DISABLETELEMETRY/ANALYTICSOPTOUT/DONOTTRACK as a cover story despite the observed behavior being remote-binary execution rather than telemetry. No hash or signature verification is performed on the downloaded payload; the destination is not a publisher-owned or registry-hosted artifact.

Database specific 
{
    "malicious-packages-origins": [
        {
            "source": "amazon-inspector",
            "modified_time": "2026-08-05T15:07:27Z",
            "sha256": "7fb73f65c18cf45f29f533ef6b9ab1278412909686c0750018f9d35170ed39f2",
            "import_time": "2026-08-05T15:19:58.670679302Z",
            "id": "IN-MAL-2026-015575",
            "versions": [
                "35.4.3"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / dws-frontend-dws-frontend-core

Package

Name
dws-frontend-dws-frontend-core
View open source insights on deps.dev
Purl
pkg:npm/dws-frontend-dws-frontend-core

Affected ranges

Affected versions

35.*
35.4.3

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "dws-frontend-dws-frontend-core-35.4.3.tgz",
            "hashes": {
                "sha512_sri": "sha512-RaLPvrC6QB/MugdnLLpAG6Yz9xLtce0w+9EIp/AIbHAQq3HsIkayfXMRDhcnH9UnYo+KiKwuJD56jqZQKEbAsg==",
                "sha1": "54269b41286b5f9a8b554587306cf9debf4f7b71"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "c5b1a75a1266711c4bb0abe4871b8416f65bf66337c0c5c4fb9c98881fb212483b2efc",
            "sha256": "8b17258b7a49297193bf16b4e2f055d3c28cd52975abba6e1b734cf8aa09e5e5",
            "path": "_support.js"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dws-frontend-dws-frontend-core/MAL-2026-13203.json"
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]