MAL-2026-13123

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/ded-aa-common-ded-aa-common-core/MAL-2026-13123.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13123
Published
2026-08-05T15:17:13Z
Modified
2026-08-05T15:52:34.669829876Z
Summary
Malicious code in ded-aa-common-ded-aa-common-core (npm)
Details

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

Source: amazon-inspector (30a80297ae44091b682bf8fa68610f345348813d94b2c84e7f82a3183b938a94)

On require() of the package, index.js loads ext.js which fetches an opaque platform-specific binary from hardcoded Cloudflare Workers hosts (oob-worker.cf101/cf102/cf103-*.workers.dev), writes it to /tmp or %TEMP% under a disguised name (dotnetdiag_*.exe on Windows,.cache_* on Unix), chmods 0755, and spawns it detached via cmd.exe/start or /bin/sh -c with stdio ignored and unref(). C2 hostnames and fallback domains are assembled from split-and-join string arrays to evade static analysis (e.g. ['sd','k.d','l.w','el1.','ru'].join('')). If HTTPS retrieval fails, the code reassembles the payload from base64-encoded DNS TXT records under *.dl.wel1.ru (sdk.dl.wel1.ru) via dns.resolveTxt and Buffer.from(...,'base64'), providing a covert channel resilient to endpoint/firewall filtering. A marker file analyticsstate/.analyticsstate provides TTL suppression to hide repeated executions. No hash or signature verification of the fetched payload; the child_process module is imported inside the activation path to further hinder static analysis.

Database specific 
{
    "malicious-packages-origins": [
        {
            "source": "amazon-inspector",
            "modified_time": "2026-08-05T15:17:13Z",
            "id": "IN-MAL-2026-015638",
            "import_time": "2026-08-05T15:20:01.199494341Z",
            "sha256": "30a80297ae44091b682bf8fa68610f345348813d94b2c84e7f82a3183b938a94",
            "versions": [
                "35.1.6"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / ded-aa-common-ded-aa-common-core

Package

Name
ded-aa-common-ded-aa-common-core
View open source insights on deps.dev
Purl
pkg:npm/ded-aa-common-ded-aa-common-core

Affected ranges

Affected versions

35.*
35.1.6

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/ded-aa-common-ded-aa-common-core/MAL-2026-13123.json"
indicators 
{
    "package_integrity": [
        {
            "filename": "ded-aa-common-ded-aa-common-core-35.1.6.tgz",
            "hashes": {
                "sha512_sri": "sha512-fWGGsRHdIxzdNcHFXBjy60NzLAutXIfGvAg+7cPlQTcEmbX/X3p+T15NtUwPYH+NWFRBwM6coa1WnXYM3umyMA==",
                "sha1": "3aa3e183b09a639c80954193b629dc69d1c75b40"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "11a1759a06aab0098fb0d7e4c7178816f65bf9533780c294f79c65885f7212483b2dfc",
            "sha256": "e0e3057cab253fa8cac075494ff607ff2d6d0fadf5ef0356bd47683d3805f49d",
            "path": "_ext.js"
        }
    ]
}
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]