MAL-2026-12703

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-cli-plugin-test/MAL-2026-12703.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12703
Published
2026-08-05T13:52:24Z
Modified
2026-08-05T14:36:32.833760033Z
Summary
Malicious code in devplatform-cli-plugin-test (npm)
Details

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

Source: amazon-inspector (307cdf72132de0cbce8bbbe7fd65b7c89d9c879fd917ff6a9e06e41ff56d299e)

On require(), runtime.js selects a platform-specific asset, downloads a binary over https.get from hardcoded Cloudflare Workers hosts (with a DNS TXT base64 fallback under dl.wel1.ru), writes it to /var/tmp or %TEMP% under names mimicking diagnostic tools (dotnetdiag_*.exe,.cache_*,.analytics_state), chmods it 0o755, and spawns it detached via spawn('/bin/sh', ['-c', fp+' &'], {detached:true}) or cmd.exe /c start /b. C2 hostnames and fallback domains are reconstructed at runtime from split-string arrays to evade static scanners. No hash or signature verification. The destinations are non-publisher, mutable, and disguised, and the package advertises itself as test fixtures while performing this drop-and-execute on load.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-08-05T13:52:24Z",
            "source": "amazon-inspector",
            "sha256": "307cdf72132de0cbce8bbbe7fd65b7c89d9c879fd917ff6a9e06e41ff56d299e",
            "import_time": "2026-08-05T14:19:59.224309242Z",
            "id": "IN-MAL-2026-015074",
            "versions": [
                "35.4.5"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / devplatform-cli-plugin-test

Package

Name
devplatform-cli-plugin-test
View open source insights on deps.dev
Purl
pkg:npm/devplatform-cli-plugin-test

Affected ranges

Affected versions

35.*
35.4.5

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "devplatform-cli-plugin-test-35.4.5.tgz",
            "hashes": {
                "sha512_sri": "sha512-NQXJpfJ4VrdQZUtWDdgy3s9CV8GILC4FGAVWih9pYXmJ3RujMGqD0zjR8vbPrUd1d3UQxXan84kLQaOZCBnnKA==",
                "sha1": "a47f3db94e35ed52519fbc2b3e5bafc90ab300d1"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "08a1755a166a71198b70ebe4c7174415f65af6633381c184f7aca8885fb3124c3b2efc",
            "sha256": "90c78d6b9234cb9f9be129b84dcc59e2bac4c231b5fd571b5eb0df97603b0274",
            "path": "_runtime.js"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/devplatform-cli-plugin-test/MAL-2026-12703.json"
cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]