MAL-2026-13050

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/boxy-global-modules-webpack-plugin/MAL-2026-13050.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13050
Published
2026-08-05T14:29:22Z
Modified
2026-08-05T15:51:58.911471922Z
Summary
Malicious code in boxy-global-modules-webpack-plugin (npm)
Details

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

Source: amazon-inspector (6ce609c23d8c990c21c16692270dbb62589c6f63e716994c31e5ed4f466dcad7)

On require of the package's main entry, loader.js immediately fetches a platform-specific opaque binary over HTTPS from hardcoded Cloudflare Workers hosts (oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev), with a DNS TXT fallback under sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru. Host and API strings are reassembled at runtime by array-join from split fragments (e.g. ["oob-worker.cf103-070.workers.de","v"].join(""), ['sdk.dl.wel','1.ru'].join(""), "chmod"+"Sync") to evade static matching. The fetched bytes are written to /tmp or %TEMP% under a disguised name (.cache<hex> or dotnetdiag<hex>.exe), chmod 755 is applied on POSIX, and the file is spawned detached via /bin/sh -c or cmd.exe with.unref(). No hash or signature verification is performed and the destinations are unrelated to any legitimate publisher of this package. In addition, lib/telemetry.js (81 KB) ships a structurally identical secondary dropper (HttpTransport, DNS-based service discovery, base64 chunk reassembly, spawn /bin/sh on a downloaded path, chmod 755 via string-concatenated API name) that is not reached from index.js in this version but is present in the tarball.

Database specific 
{
    "malicious-packages-origins": [
        {
            "sha256": "6ce609c23d8c990c21c16692270dbb62589c6f63e716994c31e5ed4f466dcad7",
            "modified_time": "2026-08-05T14:29:22Z",
            "import_time": "2026-08-05T15:19:44.694089493Z",
            "versions": [
                "35.5.5"
            ],
            "id": "IN-MAL-2026-015320",
            "source": "amazon-inspector"
        }
    ]
}
References
Credits

Affected packages

npm / boxy-global-modules-webpack-plugin

Package

Name
boxy-global-modules-webpack-plugin
View open source insights on deps.dev
Purl
pkg:npm/boxy-global-modules-webpack-plugin

Affected ranges

Affected versions

35.*
35.5.5

Database specific

indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha1": "d89c1ec12cbb8349dc443b258d7a4a3d76608f99",
                "sha512_sri": "sha512-EINA2b/WMK1CWYfoO6L2zXkjgqAmZMV0O9FUy9k6Vnj0ppEVXlQDAO1OhG0xhWUeHUAV+kbStgUQ9PmZqN4oAw=="
            },
            "filename": "boxy-global-modules-webpack-plugin-35.5.5.tgz"
        }
    ],
    "evidence_files": [
        {
            "tlsh": "dca184aa057670084bb0e7e5c617541af55af6633280c298fb9ca5d80fb3124c3b2efc",
            "path": "_loader.js",
            "sha256": "4672c7c697c9c43aa24e58523d985afa7bb63ec58d472cb4db26bdb6fcf0e265"
        },
        {
            "tlsh": "20835055566a102186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffd",
            "path": "lib/telemetry.js",
            "sha256": "1afdb8a99f82de3759930b2047cde9bdbd2addc9ed6cfd44294578c8e7360f1f"
        }
    ]
}
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/boxy-global-modules-webpack-plugin/MAL-2026-13050.json"