MAL-2026-12287

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/twork-data-services-aggregator-company-sme-main-timeline-loader-with-customers/MAL-2026-12287.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12287
Published
2026-08-05T09:14:49Z
Modified
2026-08-05T10:07:01.299999447Z
Summary
Malicious code in twork-data-services-aggregator-company-sme-main-timeline-loader-with-customers (npm)
Details

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

Source: amazon-inspector (401d167bfbb3ec350a033f908aef6678495563e92c6b090d0eaab85bd1c2b7ba)

On require(), index.js loads bridge.js which assembles obfuscated Cloudflare Workers hostnames from split string literals (oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf99-9b3.workers.dev) and downloads a platform-specific opaque binary via https.get. If HTTPS fails, a DNS-TXT covert-channel fallback queries c.<domain> for a chunk count then <i>.<domain> TXT records under tin.dl.well1.site, tina.dl.well1.site, ldr.dl.well1.site, and win.dl.well1.site, base64-decoding the concatenated chunks. The bytes are written to a hidden path in /tmp or %TEMP%, chmodded 0755, and executed detached via spawn("/bin/sh", ["-c", fp+" &"]) or spawn("cmd",...). Cover strings such as "analyticsstate" and "dotnet_diag" mask the behavior. The hosts are unrelated to any declared publisher, the fetched content is opaque and unverified, and execution fires automatically when any consumer imports the package.

Database specific 
{
    "malicious-packages-origins": [
        {
            "sha256": "401d167bfbb3ec350a033f908aef6678495563e92c6b090d0eaab85bd1c2b7ba",
            "source": "amazon-inspector",
            "versions": [
                "20.3.8"
            ],
            "id": "IN-MAL-2026-014606",
            "import_time": "2026-08-05T09:28:29.849145987Z",
            "modified_time": "2026-08-05T09:14:49Z"
        }
    ]
}
References
Credits

Affected packages

npm / twork-data-services-aggregator-company-sme-main-timeline-loader-with-customers

Package

Name
twork-data-services-aggregator-company-sme-main-timeline-loader-with-customers
View open source insights on deps.dev
Purl
pkg:npm/twork-data-services-aggregator-company-sme-main-timeline-loader-with-customers

Affected ranges

Affected versions

20.*
20.3.8

Database specific

cwes 
[
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
indicators 
{
    "evidence_files": [
        {
            "sha256": "8a021c27cc00d1ffcd0ba39bb74257e19f1c3d0ffb3729023b8ea3dc39204b8e",
            "tlsh": "64a1a79a166a30194bb097e48b174416f65bf6533780c2d4fb9c75885fb622483b1efc",
            "path": "_bridge.js"
        }
    ],
    "package_integrity": [
        {
            "filename": "twork-data-services-aggregator-company-sme-main-timeline-loader-with-customers-20.3.8.tgz",
            "hashes": {
                "sha1": "3cedeae130df0e7087cce366317ea923f0f6f3f4",
                "sha512_sri": "sha512-PM2Br0dWcNczJ6+u69FWMcgady5pLt/yuxGLKbo8FyAY8LBbrU+hsB2FgOWMdY1elXV56mzK+HU/2NS4oWtTxg=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/twork-data-services-aggregator-company-sme-main-timeline-loader-with-customers/MAL-2026-12287.json"