MAL-2026-13071

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/boxy-mmb-deps-pvm-plugin/MAL-2026-13071.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13071
Published
2026-08-05T14:27:12Z
Modified
2026-08-05T15:52:09Z
Summary
Malicious code in boxy-mmb-deps-pvm-plugin (npm)
Details

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

Source: amazon-inspector (088639f9b19ce8234cef116c0250628c6894bd509915aa90639c56436ec19646)

index.js unconditionally loads polyfill.js on require. polyfill.js reconstructs attacker-controlled hostnames from split string literals (oob-worker.cf101-adf.workers.dev, cf102-baf.workers.dev, cf99-9b3.workers.dev, cf100-416.workers.dev), downloads a platform-specific binary via https.get, and — if HTTPS fails — falls back to a DNS TXT covert channel that reassembles base64-chunked payload bytes from c. and . lookups against sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched bytes are written to /var/tmp/.cache or %TEMP%\dotnet_diag.exe, chmod 0755, and spawned detached via /bin/sh -c or cmd /c start. lib/telemetry.js ships a second copy of the same dropper under an 'analytics-sdk' cover story, loading child_process through require("child_"+"process") and calling fs["chmod"+"Sync"] to further hide the pattern. The package's stated 'plugin' purpose does not match the shipped payload-delivery infrastructure.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-015306",
            "import_time":  "2026-08-05T15:19:43.795451134Z",
            "modified_time":  "2026-08-05T14:27:12Z",
            "sha256":  "088639f9b19ce8234cef116c0250628c6894bd509915aa90639c56436ec19646",
            "source":  "amazon-inspector",
            "versions":  [
                "35.6.5"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / boxy-mmb-deps-pvm-plugin

Package

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

Affected ranges

Affected versions

35.*
35.6.5

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":  "_polyfill.js",
            "sha256":  "701cd27b7b825baf09428acdccd2c7e082d7ca41e7d3906c7c3b254700072795",
            "tlsh":  "c8a1b69a16a670198bb097e0c7174416f65bf6633380d2c4fbaca5985f7352483b2efc"
        },
        {
            "path":  "lib/telemetry.js",
            "sha256":  "296b66cf2f7fad6676e07cb4e6530ceacce9db6262493ad4954ebceab7737bbe",
            "tlsh":  "dc835056566a142186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "boxy-mmb-deps-pvm-plugin-35.6.5.tgz",
            "hashes":  {
                "sha1":  "922806d095badd2ece37b5188457328e374d1951",
                "sha512_sri":  "sha512-FbMsyqU+EhtslZmYCCtaJ69cG/SVKJDEI9Hjdd9gk8gmszYo+PJK2nmprRUBiGR2nzxC3DDk7ssbavI0pGpVOw=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/boxy-mmb-deps-pvm-plugin/MAL-2026-13071.json"