MAL-2026-12295

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/twork-data-services-procedure-engine-api-v1-procedure-info/MAL-2026-12295.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12295
Aliases
  • GHSA-2pmw-74jm-69r8
Published
2026-08-05T09:09:12Z
Modified
2026-08-26T01:18:30Z
Summary
Malicious code in twork-data-services-procedure-engine-api-v1-procedure-info (npm)
Details

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

Source: amazon-inspector (421a0316130197eb768ed2dbdf50c031f5ac8f79c3a58994369257ba70cff036)

On require of the package's main index.js, support.js reconstructs attacker-controlled hostnames from string-split arrays (oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev) with a DNS-TXT fallback under dl.well1.site (tin.dl.well1.site, tina.dl.well1.site, ldr.dl.well1.site, win.dl.well1.site), downloads a platform-specific binary over HTTPS, writes it to /var/tmp/.cache on Unix or %TEMP%/dotnet_diag_.exe on Windows, chmods 0755, and spawns it detached via /bin/sh -c or cmd. No hash or signature verification is performed. Filenames and lock paths (analytics_state, dotnet_diag_*.exe) mimic legitimate telemetry to evade notice, and destination hostnames are split across array literals joined at runtime to defeat static string search.

Source: ghsa-malware (87698a1a34857ea2c3a6a2c6dc0e2a7a88db69ddfd2b3874032e2579558e0b3b)

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": [
        {
            "id": "IN-MAL-2026-014567",
            "import_time": "2026-08-05T09:28:26.32056189Z",
            "modified_time": "2026-08-05T09:09:12Z",
            "sha256": "421a0316130197eb768ed2dbdf50c031f5ac8f79c3a58994369257ba70cff036",
            "source": "amazon-inspector",
            "versions": [
                "20.6.9"
            ]
        },
        {
            "id": "GHSA-2pmw-74jm-69r8",
            "import_time": "2026-08-25T17:25:28.056932956Z",
            "modified_time": "2026-08-25T16:31:31Z",
            "sha256": "87698a1a34857ea2c3a6a2c6dc0e2a7a88db69ddfd2b3874032e2579558e0b3b",
            "source": "ghsa-malware",
            "versions": [
                "20.6.9"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / twork-data-services-procedure-engine-api-v1-procedure-info

Package

Name
twork-data-services-procedure-engine-api-v1-procedure-info
View open source insights on deps.dev
Purl
pkg:npm/twork-data-services-procedure-engine-api-v1-procedure-info

Affected ranges

Affected versions

20.*
20.6.9

Database specific

cwes
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    },
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators
{
    "evidence_files": [
        {
            "path": "_support.js",
            "sha256": "43fb8862df8bcbe69222e00fee7894e12d09ca830e7332a032acfa4cd8d87c3b",
            "tlsh": "a4b1a69a057a30198bb09be58b075415fa5bf26377808284fb9cb5841f7302483b2efc"
        }
    ],
    "package_integrity": [
        {
            "filename": "twork-data-services-procedure-engine-api-v1-procedure-info-20.6.9.tgz",
            "hashes": {
                "sha1": "5f3ebf4d7909f9f6f13bbd26037471404b1c1c83",
                "sha512_sri": "sha512-iDOQkmh+CX5fKgaeOWn+U7IunEkFIibRDb9os5lH5IQE1xibDjZRd0CcTd1rRDW+9xUpH6uvPYtaHQpgcg89JA=="
            }
        }
    ]
}
source
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/twork-data-services-procedure-engine-api-v1-procedure-info/MAL-2026-12295.json"