MAL-2026-12172

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bigops-voximplant/MAL-2026-12172.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12172
Aliases
  • GHSA-r63g-878r-qfjf
Published
2026-08-05T08:47:31Z
Modified
2026-08-06T01:20:03.701861229Z
Summary
Malicious code in bigops-voximplant (npm)
Details

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

Source: amazon-inspector (e20e151930946a17e9bea02eb51c760264c27138792955452acc4231196ceaae)

On require() of bigops-voximplant, index.js loads ext.js which downloads an OS/arch-specific binary from Cloudflare Workers subdomains whose hostnames are reassembled at runtime from split string fragments (oob-worker.cf102-baf.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev), with a DNS-over-TXT base64 chunked fallback resolving from sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru to bypass HTTPS egress filtering. The fetched bytes are written to /tmp/.cache<hex> on Unix (or %TEMP%\dotnetdiag<hex>.exe on Windows), chmod'd 0755 via fs['chmod'+'Sync'], and detached-spawned via /bin/sh -c '<path> &' or cmd /c start /b, with no hash or signature verification and no source-of-truth publisher domain. A second, structurally identical dropper is bundled as lib/telemetry.js under an 'analytics SDK' cover story, using the same base64 chunk assembly, string-concatenated childprocess require, and detached /bin/sh spawn. Hosts and dangerous APIs are constructed via runtime string joins ('child'+'process', split-and-join hostname fragments) to defeat static inspection. The destinations are anonymous Cloudflare Workers and a.ru DNS-TXT channel unrelated to the package's stated Voximplant integration purpose.

Source: ghsa-malware (883fad29cd53f12c99b7191ee77a0400cca0ee0911467b88f5d64f8b3402798a)

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Database specific 
{
    "malicious-packages-origins": [
        {
            "versions": [
                "20.8.5"
            ],
            "sha256": "c67a56841b4588b155f5b2470d87c8d36c476b1a6eddf3f8a75e8fe5d49c9624",
            "import_time": "2026-08-05T09:28:08.952364921Z",
            "id": "IN-MAL-2026-014418",
            "modified_time": "2026-08-05T08:47:31Z",
            "source": "amazon-inspector"
        },
        {
            "versions": [
                "35.4.8"
            ],
            "import_time": "2026-08-05T15:19:55.794554529Z",
            "sha256": "e20e151930946a17e9bea02eb51c760264c27138792955452acc4231196ceaae",
            "id": "IN-MAL-2026-015519",
            "modified_time": "2026-08-05T14:58:42Z",
            "source": "amazon-inspector"
        },
        {
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "883fad29cd53f12c99b7191ee77a0400cca0ee0911467b88f5d64f8b3402798a",
            "id": "GHSA-r63g-878r-qfjf",
            "import_time": "2026-08-06T00:58:53.443505439Z",
            "modified_time": "2026-08-05T18:06:29Z",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / bigops-voximplant

Package

Name
bigops-voximplant
View open source insights on deps.dev
Purl
pkg:npm/bigops-voximplant

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

20.*
20.8.5
35.*
35.4.8

Database specific

indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-K5W6I4BTWlkKTz704Nlb2+6uD+xrS6rhT3+mQy2wYGDIDiE3QAzktdpPc+9iSNuMHRxwXOnme0USKpohHHlyjQ==",
                "sha1": "0794482c74e14fb1f24a4e16260138125716ea31"
            },
            "filename": "bigops-voximplant-20.8.5.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "_support.js",
            "sha256": "48731f8ed9e0d68d191a6bcae0395def02afe784520a649c5f2ead647c2e9e48",
            "tlsh": "84a1a89a15a570198bb0dbe487274416f65bf6633380c294f75ca9985fb213483b3dfc"
        },
        {
            "tlsh": "68835056566a142186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc",
            "sha256": "1dd3a52870160ea403fbb107f381bd660b5e55572851eb97caf40409f2a0dfda",
            "path": "lib/telemetry.js"
        }
    ]
}
cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code"
    },
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code"
    },
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bigops-voximplant/MAL-2026-12172.json"