MAL-2026-12278

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tinkoff-statist-browser-typed-client-test.softwarecenter.metrics/MAL-2026-12278.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12278
Published
2026-08-05T08:57:52Z
Modified
2026-08-05T10:06:57.163379460Z
Summary
Malicious code in tinkoff-statist-browser-typed-client-test.softwarecenter.metrics (npm)
Details

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

Source: amazon-inspector (d9027d7179ebd421765074cbde727f3a3e358eb677a9a9125fb22ff6638fd799)

The package's index.js requires./setup on module load. setup.js selects a platform-specific output path (/var/tmp/.cache<hex> on unix, %TEMP%/dotnetdiag<hex>.exe on Windows), fetches bytes over HTTPS from Cloudflare Workers hosts whose names are assembled at runtime from split-string fragments joined together (oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev), with DNS TXT-record fallback destinations (tin.dl.well1.site, tina.dl.well1.site, ldr.dl.well1.site, win.dl.well1.site). The fetched payload is written to disk, chmod 0755 on unix, and spawned detached via /bin/sh -c or cmd.exe /c start. There is no hash or signature verification, no publisher relationship to the destination hosts, and no relationship between the fetched binary and any advertised functionality. Cover-story naming (analyticsstate identifier, dotnetdiag*.exe filename, DISABLE_TELEMETRY env-var opt-out) is used to mimic legitimate telemetry, and the package name typosquats a Tinkoff internal scope. The hostname obfuscation via.join("") on split fragments is a deliberate evasion pattern.

Database specific 
{
    "malicious-packages-origins": [
        {
            "versions": [
                "20.1.3"
            ],
            "import_time": "2026-08-05T09:28:17.98951962Z",
            "sha256": "d9027d7179ebd421765074cbde727f3a3e358eb677a9a9125fb22ff6638fd799",
            "modified_time": "2026-08-05T08:57:52Z",
            "id": "IN-MAL-2026-014489",
            "source": "amazon-inspector"
        }
    ]
}
References
Credits

Affected packages

npm / tinkoff-statist-browser-typed-client-test.softwarecenter.metrics

Package

Name
tinkoff-statist-browser-typed-client-test.softwarecenter.metrics
View open source insights on deps.dev
Purl
pkg:npm/tinkoff-statist-browser-typed-client-test.softwarecenter.metrics

Affected ranges

Affected versions

20.*
20.1.3

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-bKeE2ccvWAapq+pTBJJ1mLXr4TCQx+tM8MA5WQIEeyc1jVRbSPYZWdsJC2FzQOosuKFcLtNU+qc80jZKX0AxWA==",
                "sha1": "90edeace82fc9f0c620c7504adc453f2a3d1d06d"
            },
            "filename": "tinkoff-statist-browser-typed-client-test.softwarecenter.metrics-20.1.3.tgz"
        }
    ],
    "evidence_files": [
        {
            "sha256": "a51f93849031ea85fa367e04bd495975dc01b6d941fac0b03c8a8b47088c59b2",
            "path": "setup.js",
            "tlsh": "58a1a75a166a312947b0e7e4c717441af56ae7633780c2d4f76ca5881fb252483b2dfc"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tinkoff-statist-browser-typed-client-test.softwarecenter.metrics/MAL-2026-12278.json"