MAL-2026-12296

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/twork-data-services-product-design-data/MAL-2026-12296.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12296
Aliases
  • GHSA-hw9w-9435-w32f
Published
2026-08-05T09:14:42Z
Modified
2026-08-06T01:21:41.618175779Z
Summary
Malicious code in twork-data-services-product-design-data (npm)
Details

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

Source: amazon-inspector (1a86edfca41ff32a7b044ecb921977944dbdc5cf5d2a3ccae4e5ca001a851816)

On require of the package's main module, loader.js downloads a platform-specific binary from a set of obfuscated Cloudflare Workers subdomains (oob-worker.cf103-070.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev) — reconstructed at runtime from split string arrays — with a DNS TXT chunked-base64 fallback over *.dl.well1.site (tin.dl.well1.site, tina.dl.well1.site, ldr.dl.well1.site, win.dl.well1.site). The fetched bytes are written to /var/tmp or %TEMP% under cover names such as.cache<hex> and dotnetdiag<hex>.exe, chmodded 0755, and spawned detached via /bin/sh -c or cmd.exe /c start /b. A parallel dropper implementation is bundled at lib/telemetry.js dressed as an APM/telemetry SDK, using base64 chunk assembly (Buffer.from(chunks,'base64')), string-concatenated fs['chmod'+'Sync'] to set 0755, and cp.spawn('/bin/sh', ['-c', filePath+' &']). The string-split concealment of C2 hostnames, DNS exfil domains, and the child_process module name is deliberate static-analysis evasion.

Source: ghsa-malware (2d6e86c90eaa21bd4c4f13544a862940ad6abab638be66015cfb227b9a178c4d)

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": [
                "20.1.5"
            ],
            "sha256": "1a86edfca41ff32a7b044ecb921977944dbdc5cf5d2a3ccae4e5ca001a851816",
            "import_time": "2026-08-05T09:28:29.714973769Z",
            "id": "IN-MAL-2026-014605",
            "modified_time": "2026-08-05T09:14:42Z",
            "source": "amazon-inspector"
        },
        {
            "sha256": "2d6e86c90eaa21bd4c4f13544a862940ad6abab638be66015cfb227b9a178c4d",
            "import_time": "2026-08-06T00:58:53.393089076Z",
            "id": "GHSA-hw9w-9435-w32f",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "modified_time": "2026-08-05T14:59:49Z",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / twork-data-services-product-design-data

Package

Name
twork-data-services-product-design-data
View open source insights on deps.dev
Purl
pkg:npm/twork-data-services-product-design-data

Affected ranges

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

Affected versions

20.*
20.1.5

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "twork-data-services-product-design-data-20.1.5.tgz",
            "hashes": {
                "sha512_sri": "sha512-5abta7qgV+OqFlH0c6CQG8BzEq3oQsYryZgESizu64vpg+mHkEyRTEJ9vIdXHChqnNQgyGQFlIQSwMd93PwEpg==",
                "sha1": "0de2916d57405fa60370fafee4b07bb65902aa87"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "35b1949a15b6301d87b0a7f48b174419fa5bf66333808294fb5ca9981f7352483b2efc",
            "sha256": "784838fd7dc0fbcf59bb4e99828ec1024837fd4e391ec747b6599cbee1e0dce3",
            "path": "_loader.js"
        },
        {
            "path": "lib/telemetry.js",
            "sha256": "5f9e1f7e3b692e58b39af1d1f28fce8bb4b873d10af85df3d44f33801ba444ff",
            "tlsh": "21835055566a242186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc"
        }
    ]
}
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.",
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/twork-data-services-product-design-data/MAL-2026-12296.json"