MAL-2026-13547

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-spa-plugin-remote-module/MAL-2026-13547.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13547
Published
2026-08-07T12:36:14Z
Modified
2026-08-07T13:20:26.142591308Z
Summary
Malicious code in devplatform-spa-plugin-remote-module (npm)
Details

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

Source: amazon-inspector (995f8b1091ff43f5fae824ef6ac028895003b9a24960b78449cbc7b295aa34fd)

On require of the package, index.js loads support.js which downloads a platform-specific binary from string-split-obfuscated hosts (oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev), with a DNS TXT fallback that reassembles a base64 payload from numbered subdomains under dl.wel1.ru (sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru). The fetched binary is written to /var/tmp on Unix or %TEMP% on Windows under a disguised name (.cache<hex> or dotnetdiag<hex>.exe), chmodded 0o755, and spawned detached via /bin/sh -c or cmd.exe /c start. Host strings and API names are reconstructed at runtime from array-join fragments (e.g., ["oob-worker.cf103-070.work","ers.d","ev"].join("")) to evade static analysis. A second module lib/telemetry.js ships the same dropper primitives with require("child_" + "process") and fs["chmod"+"Sync"] indirection, bundled as a ready-to-wire payload alongside the active dropper.

Database specific 
{
    "malicious-packages-origins": [
        {
            "versions": [
                "35.9.6"
            ],
            "source": "amazon-inspector",
            "sha256": "995f8b1091ff43f5fae824ef6ac028895003b9a24960b78449cbc7b295aa34fd",
            "id": "IN-MAL-2026-017047",
            "import_time": "2026-08-07T12:51:23.777780628Z",
            "modified_time": "2026-08-07T12:36:14Z"
        }
    ]
}
References
Credits

Affected packages

npm / devplatform-spa-plugin-remote-module

Package

Name
devplatform-spa-plugin-remote-module
View open source insights on deps.dev
Purl
pkg:npm/devplatform-spa-plugin-remote-module

Affected ranges

Affected versions

35.*
35.9.6

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-spa-plugin-remote-module/MAL-2026-13547.json"
cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506"
    }
]
indicators 
{
    "evidence_files": [
        {
            "tlsh": "b1a1946a05aa70184b70dbf4c617541af65af66373808698fb9c95c81ff251483b2efc",
            "sha256": "33a2beb5d94d15afefa2ea1fc4d00bf07288bea6d291312e5c38ec0c0daa3380",
            "path": "_support.js"
        },
        {
            "tlsh": "f9835055566a242186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc",
            "sha256": "5e726c0075e2275d041c15f67d8c990ab7626b8f973117e9c9b142ed67d373d0",
            "path": "lib/telemetry.js"
        }
    ],
    "package_integrity": [
        {
            "filename": "devplatform-spa-plugin-remote-module-35.9.6.tgz",
            "hashes": {
                "sha512_sri": "sha512-sNY7df4BAyYCiNOFHpcXOx/8KLGer4Hmm+UvuwpsCkbtPzBWR9sSoVKPErtF2p65+TAOzRaCJzDSQgx5LIRI0w==",
                "sha1": "968ec53267229b1f5d8acb644717c3d2068e379a"
            }
        }
    ]
}