MAL-2026-13057

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/boxy-maker/MAL-2026-13057.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13057
Published
2026-08-05T14:30:28Z
Modified
2026-08-05T15:52:06.626601941Z
Summary
Malicious code in boxy-maker (npm)
Details

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

Source: amazon-inspector (1164ada14e000c3802b5766cdd31ef169e8f15a6d132cbe52d88b0c593b03c2a)

On require() of the package, bridge.js downloads a platform-specific binary from obfuscated Cloudflare workers.dev hosts (oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev), writes it to a disguised temp path (e.g. dotnetdiag_*.exe,.cache_*), chmods 0755 on non-Windows, and spawns it detached via /bin/sh -c or cmd. Destination hostnames are reassembled at runtime from split-string arrays (e.g. ['oob-worker.cf102','-baf.workers.d','ev'].join('')) to evade static scanners. If HTTPS fetch fails, bridge.js falls back to a DNS TXT covert channel under wel1.ru subdomains (sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru), reconstructing chunked base64-encoded payload bytes from TXT records, writing them to disk, and executing them. Cover-story framing (DISABLETELEMETRY env var, analyticsstate, dotnetdiag_* file names) misrepresents the behavior as CDN telemetry. Installing or importing this package executes attacker-controlled bytes on the host.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-08-05T14:30:28Z",
            "id": "IN-MAL-2026-015327",
            "import_time": "2026-08-05T15:19:45.05605929Z",
            "versions": [
                "35.4.8"
            ],
            "source": "amazon-inspector",
            "sha256": "1164ada14e000c3802b5766cdd31ef169e8f15a6d132cbe52d88b0c593b03c2a"
        }
    ]
}
References
Credits

Affected packages

npm / boxy-maker

Package

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

Affected ranges

Affected versions

35.*
35.4.8

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-35.4.8.tgz",
            "hashes": {
                "sha512_sri": "sha512-apDkTrC4ofwWhxDCfBfdPgGxgVv1VSTjA8YQawP1erXcSNCyhRPHOx231oGBKNNzBxNCz4jK0/3ERVT6jVrY0w==",
                "sha1": "69e06ae4f46ff2328098656fd19cbe16839f2faa"
            }
        }
    ],
    "evidence_files": [
        {
            "path": "_bridge.js",
            "tlsh": "39a1755a12aa301987b0e7e4c717541af65ae6633780c2d4fb9c69841fb726483b1dfc",
            "sha256": "ba39d855ff4e4fc32eae7ccc9c5f9d74e6d1e9160e9e4b1ef09a15e8edd03713"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/boxy-maker/MAL-2026-13057.json"