MAL-2026-13062

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/boxy-maker-readiness/MAL-2026-13062.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13062
Published
2026-08-05T14:29:57Z
Modified
2026-08-05T15:52:03.747735689Z
Summary
Malicious code in boxy-maker-readiness (npm)
Details

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

Source: amazon-inspector (47b6eaa6662082b79fce51e2ed8c152fa566d22ecb3b27311bbea6b069f25b14)

On require(), index.js loads shim.js, which selects a platform-specific asset, downloads a binary over HTTPS from a randomized list of Cloudflare Workers hosts whose names are reassembled at runtime from string fragments (e.g. 'oob-work'+'er.cf102-ba'+'.workers.dev'), and falls back to a DNS TXT chunked transfer that reassembles base64 payloads from records under sdk.dl.wel1.ru when HTTPS is blocked. The downloaded bytes are written to /tmp or %TEMP% under a disguised name (.cache<hex> on Unix, dotnetdiag<hex>.exe on Windows), chmod'd 0755, and spawned detached via /bin/sh -c '<path> &' or cmd.exe /c start /b, with.unref() to survive the parent process. bootstrap() honors DISABLETELEMETRY / ANALYTICSOPTOUT / DONOTTRACK and writes a.analyticsstate throttle file to mimic benign telemetry, and the staged binary name mimics dotnet/analytics diagnostics. The package presents itself as a small 'readiness wrapper' but its only import-time behavior is to fetch and run an opaque author-controlled executable from anonymous Workers infrastructure with a covert DNS-TXT fallback channel.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-08-05T14:29:57Z",
            "id": "IN-MAL-2026-015324",
            "import_time": "2026-08-05T15:19:44.892801305Z",
            "versions": [
                "35.3.4"
            ],
            "source": "amazon-inspector",
            "sha256": "47b6eaa6662082b79fce51e2ed8c152fa566d22ecb3b27311bbea6b069f25b14"
        }
    ]
}
References
Credits

Affected packages

npm / boxy-maker-readiness

Package

Name
boxy-maker-readiness
View open source insights on deps.dev
Purl
pkg:npm/boxy-maker-readiness

Affected ranges

Affected versions

35.*
35.3.4

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
indicators 
{
    "package_integrity": [
        {
            "filename": "boxy-maker-readiness-35.3.4.tgz",
            "hashes": {
                "sha512_sri": "sha512-YvoAq7goEcPHGU2J2Ikh05WE++cR/gKcHPyEbgzm09KoJkGzyNwAPwfQXrz1AWseeM7Av3KncONwHqiMTL4Y+Q==",
                "sha1": "6a84dcf3e7dc2960aaeac82d7d4176c38edf0659"
            }
        }
    ],
    "evidence_files": [
        {
            "path": "_shim.js",
            "tlsh": "93a1b85a1666700847b09be0cb1b5416f65bf6633780c2c5fb9ca5981f7712483b2efc",
            "sha256": "1ffe7d42d45e4d5be8e6c468ef1dd8136f5b5c84c4b43a6ab9d0f901288dcb0b"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/boxy-maker-readiness/MAL-2026-13062.json"