MAL-2026-13221

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bigops-legacy-telephony-panel/MAL-2026-13221.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13221
Published
2026-08-05T15:38:35Z
Modified
2026-08-05T16:49:58.728408857Z
Summary
Malicious code in bigops-legacy-telephony-panel (npm)
Details

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

Source: amazon-inspector (610b2084c8573d9a89262f1a4dcd8ff26acdcc0568f7fa29ac5a921a292e390a)

On require of this package, index.js loads init.js which at module load fetches a platform-specific binary from hostnames reassembled at runtime from split string arrays (oob-worker.cf10-1-adf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf99-9b3.workers.dev), with a fallback that reconstructs a base64 payload from numbered DNS TXT records under c.<domain>/<n>.<domain> resolving under *.dl.wel1.ru. The retrieved bytes are written to /var/tmp/.cache<hex> on Unix or %TEMP%\dotnetdiag<hex>.exe on Windows (filename mimicking.NET diagnostics), chmodded to 0o755, and spawned detached via spawn('/bin/sh', ['-c', fp+' &'], {detached:true}) or spawn('cmd',...). Destination hosts are anonymous workers.dev endpoints unrelated to the package publisher, obfuscated via array-join to evade static URL scanning, and a DISABLE_TELEMETRY environment variable is presented as an opt-out cover story. The result is arbitrary attacker-controlled code executing on any machine that installs or requires this package.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-08-05T15:38:35Z",
            "id": "IN-MAL-2026-015777",
            "import_time": "2026-08-05T16:13:44.171592248Z",
            "versions": [
                "35.5.7"
            ],
            "source": "amazon-inspector",
            "sha256": "610b2084c8573d9a89262f1a4dcd8ff26acdcc0568f7fa29ac5a921a292e390a"
        }
    ]
}
References
Credits

Affected packages

npm / bigops-legacy-telephony-panel

Package

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

Affected ranges

Affected versions

35.*
35.5.7

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bigops-legacy-telephony-panel/MAL-2026-13221.json"
indicators 
{
    "package_integrity": [
        {
            "filename": "bigops-legacy-telephony-panel-35.5.7.tgz",
            "hashes": {
                "sha512_sri": "sha512-pGytTt71CKXW1pIj5UrWhIqXI2X0VHBongWMDOQC7PdKUzT3oJ9Uiv46yg7wL+va5FBbXb0gKyj0Eaj0CRNFZw==",
                "sha1": "f99df669b063f8a322015cf034fd9f32066c068c"
            }
        }
    ],
    "evidence_files": [
        {
            "path": "_init.js",
            "tlsh": "6ba1965a12a6b0184f70e7e0c61b4416f66bf6633681c6c4f79c55944fb312483b2efc",
            "sha256": "7567d44b4e7977bebc63450ac0dc840595d5058987511c559a4f6b853055463c"
        }
    ]
}