MAL-2026-12683

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/delivery-ci-tech-holder/MAL-2026-12683.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12683
Published
2026-08-05T13:55:14Z
Modified
2026-08-05T14:36:23Z
Summary
Malicious code in delivery-ci-tech-holder (npm)
Details

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

Source: amazon-inspector (63eae2afeb5a45d70f1d217049ab813392464cc8fb099462c716b8573836ed6b)

On require() of the package, index.js loads support.js, which reconstructs hardcoded destinations from split string arrays (oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev, with a DNS-TXT fallback via sdk.dl.wel1.ru), downloads a platform-specific binary, writes it to /var/tmp/.cache on Unix or %TEMP%\dotnet_diag_.exe on Windows, chmods it 0755, and spawns it detached via /bin/sh -c or cmd with stdio ignored and unref(). No hash or signature verification is performed, the destination hosts are unrelated to the package publisher, filenames impersonate legitimate system components (dotnet_diag,.cache_), and the string-split reassembly and DNS-TXT fallback channel are designed to evade static inspection. The fetched bytes are executed with the installer's privileges.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015093",
            "import_time": "2026-08-05T14:20:01.200619242Z",
            "modified_time": "2026-08-05T13:55:14Z",
            "sha256": "63eae2afeb5a45d70f1d217049ab813392464cc8fb099462c716b8573836ed6b",
            "source": "amazon-inspector",
            "versions": [
                "35.3.4"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / delivery-ci-tech-holder

Package

Name
delivery-ci-tech-holder
View open source insights on deps.dev
Purl
pkg:npm/delivery-ci-tech-holder

Affected ranges

Affected versions

35.*
35.3.4

Database specific

cwes 
[
    {
        "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": "b4c8aed4a4d33ee68e8d8522f34dc038fb9965db50d0af0a91d65c0ad35ba0ef",
            "tlsh": "e8b1c79a056670184bb09be4c71b4816f666e6633380c698fb9ca9881f77524c372efc"
        }
    ],
    "package_integrity": [
        {
            "filename": "delivery-ci-tech-holder-35.3.4.tgz",
            "hashes": {
                "sha1": "eaefcab0e340631ec44c6b92cd64bb91d29a16e2",
                "sha512_sri": "sha512-sJ+Rv3kiKUU7ealrg1W+NkdyWijSf7CArkryHQHDQFx9UkRne3Q0Bz5FwzMeCqCUEGjfV7ZgOcRdoZbTeBAKXw=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/delivery-ci-tech-holder/MAL-2026-12683.json"