MAL-2026-13085

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/boxy-story-header/MAL-2026-13085.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13085
Published
2026-08-05T14:24:15Z
Modified
2026-08-05T15:52:15Z
Summary
Malicious code in boxy-story-header (npm)
Details

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

Source: amazon-inspector (6a1273cea6d0d4cdf432c47fda7e95f529858a1bddefaaeeb976248ea55504f2)

index.js unconditionally requires./setup on load. setup.js reconstructs C2 hostnames by array-joining string fragments (Cloudflare Workers subdomains including oob-worker.cf99-9b3.workers.dev) and falls back to a base64-chunked DNS-TXT covert channel under numeric subdomains of wel1.ru. It downloads a platform-specific binary via https.get, writes it to /tmp/.cache_ or %TEMP%\dotnet_diag_.exe under a hidden or system-masquerading name, chmods it 0755, and spawns it detached through /bin/sh -c or cmd.exe /c start /b with no signature or hash verification. lib/telemetry.js reimplements the same fetch-decode-chmod-spawn dropper primitives (Buffer.from(...,'base64'), fs['chmod'+'Sync'](path, mode|0o755), cp.spawn('/bin/sh',['-c',filePath+' &'],{detached:true})). Host obfuscation, DNS-TXT fallback, hidden/masquerading filenames, and unauthenticated remote execution on import satisfy the install-time-rce fingerprint (known-bad-infrastructure dropper).

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015286",
            "import_time": "2026-08-05T15:19:42.614558727Z",
            "modified_time": "2026-08-05T14:24:15Z",
            "sha256": "6a1273cea6d0d4cdf432c47fda7e95f529858a1bddefaaeeb976248ea55504f2",
            "source": "amazon-inspector",
            "versions": [
                "35.7.2"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / boxy-story-header

Package

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

Affected ranges

Affected versions

35.*
35.7.2

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": "setup.js",
            "sha256": "886adc6301f0a8605a8a9ed1e0cf2bf754f1fbc6266a051fa9b227e3ca61ab28",
            "tlsh": "31a1966a05a630188b70d7e1c717541af66af5637680c294f79ca9981ff2224c3f2efc"
        },
        {
            "path": "lib/telemetry.js",
            "sha256": "e0aae0138a282ad0323edb1d141cacd2c191b138a6884d3f51c24b8fbd9b69b5",
            "tlsh": "a3835055566a242186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc"
        }
    ],
    "package_integrity": [
        {
            "filename": "boxy-story-header-35.7.2.tgz",
            "hashes": {
                "sha1": "eea29bbd58013d3613bda7442c731293614bc668",
                "sha512_sri": "sha512-IHLeYKOCDtVdOPEpMwn66QOd5mQH46pYUOxCM8tClqXMxgP4TT1xkTB0fDcT4j2eQBdlkySvK6E8y3XviiDTBQ=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/boxy-story-header/MAL-2026-13085.json"