MAL-2026-12677

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/delivery-ci-notify/MAL-2026-12677.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12677
Published
2026-08-05T13:55:34Z
Modified
2026-08-05T14:36:21.191819452Z
Summary
Malicious code in delivery-ci-notify (npm)
Details

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

Source: amazon-inspector (ebf92bb7d56497b7cc6eb6b7b04a210fb531faa624a9c1b97e830fbf745d6258)

On require() of delivery-ci-notify, index.js loads shim.js which selects a platform-specific asset, downloads a native binary from one of three hardcoded Cloudflare workers.dev hosts (oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev) with hostnames assembled at runtime via Array.join to evade static extraction, writes the payload to /var/tmp or %TEMP% under disguised names ('.cache<hex>' on Unix, 'dotnetdiag<hex>.exe' on Windows), chmods it 0755, and spawns it detached via /bin/sh -c or cmd.exe. If the HTTPS fetch fails, the shim falls back to a DNS TXT covert channel under *.dl.wel1.ru (sdk/ext/pkg/net subdomains), retrieving a chunk count from c.<domain> and reassembling numbered TXT records via base64 into the same executable. Execution is gated by a TTL state file '.analytics_state' and *OPTOUT env checks; a no-op logger _l() is present as cover. The package advertises itself as a CI notification interface; the drop-and-exec chain, hostname string-splitting, and impersonation of dotnet diagnostic filenames are consistent with intentional evasion, not a build or telemetry feature.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-08-05T13:55:34Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-015095",
            "import_time": "2026-08-05T14:20:01.429937302Z",
            "sha256": "ebf92bb7d56497b7cc6eb6b7b04a210fb531faa624a9c1b97e830fbf745d6258",
            "versions": [
                "35.2.5"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / delivery-ci-notify

Package

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

Affected ranges

Affected versions

35.*
35.2.5

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "delivery-ci-notify-35.2.5.tgz",
            "hashes": {
                "sha512_sri": "sha512-CjUVmIP8RSRH8CAKox4L44hzYECIQ49QCH7lqSjClQRmmrEDH632Md30tbdOqv7hh4D1KbZHG+g2gld/nmgpKg==",
                "sha1": "3f714b6455b24816eb67913d7b71083de6334fba"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "36a1b75616a670198bb09be58717441af65bf6633380c288fb5ca5981f7262483b2efc",
            "sha256": "f44346e66d2196684de37c27a18d8364cd1ecb314828d6bb167b1bd6b97cc3bb",
            "path": "_shim.js"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/delivery-ci-notify/MAL-2026-12677.json"
cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]