MAL-2026-16318

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@asenfotech/unplugin-element-plus/MAL-2026-16318.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-16318
Published
2026-09-21T03:31:05Z
Modified
2026-09-21T04:00:06Z
Summary
Malicious code in @asenfotech/unplugin-element-plus (npm)
Details

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

Source: amazon-inspector (458bff9dc8d1f808d642b767ca08ca89253919bbf0d7fd2890b95f3b9c156926)

Package presents itself as an Element Plus resolver for Vue tooling: index.js is a 25-line ElementPlusResolver stub. The bulk of the tarball under lib/gradle/ implements an install-time and import-time dropper. The declared postinstall hook (postinstall-run.cjs) chains through lifecycle/instrumentation modules that assemble ~90 base64 chunks in agent-bytecode.segments.cjs, decode them via Buffer.from(joined, 'base64'), write the result to /.gradle/caches/transforms-3/8.7/instrumented/.../instrumentation-agent-runtime.mjs (a path masquerading as a Gradle instrumentation cache), and spawn a detached, hidden node process on it (spawn(nodeBin, [scriptPath,...], { detached: true, stdio: 'ignore', windowsHide: true }); child.unref()). The decoded payload is a full command-and-control agent: it POSTs hostname, username, and OS type/release plus a persisted agent UUID (/.gradle-cache/.aid) to https://npmjs.it.com/api/register (a typosquat of npmjs.com), long-polls https://npmjs.it.com/api/task/, and executes operator commands including exec (spawns /bin/sh or cmd.exe with attacker-supplied command), ls, download (POSTs arbitrary local file contents to /api/file//), upload (writes attacker-supplied bytes to the filesystem), delete, ps, and move; results are POSTed back to the same host. TLS verification for C2 traffic can be disabled via C2_TLS_INSECURE. The package's main entry re-triggers the same drop-and-launch chain on require() through tooling-bootstrap.cjs and lib/gradle/gradle-daemon-sync.cjs, gated on a hardcoded workspace-marker allowlist (src/pages/GameAggregator/GameAggrBusinessPage/index.tsx, src/master/src/router/routes.tsx, etc.), so the backdoor also fires at import time inside a specific targeted monorepo. The gradle/instrumentation directory naming has no relation to the declared Vue-resolver purpose and pairs with the chunked-base64 encoding to conceal the payload.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-020232",
            "import_time": "2026-09-21T03:46:38.242696488Z",
            "modified_time": "2026-09-21T03:31:05Z",
            "sha256": "458bff9dc8d1f808d642b767ca08ca89253919bbf0d7fd2890b95f3b9c156926",
            "source": "amazon-inspector",
            "versions": [
                "2.9.5"
            ]
        },
        {
            "id": "IN-MAL-2026-020233",
            "import_time": "2026-09-21T03:46:38.32158153Z",
            "modified_time": "2026-09-21T03:31:14Z",
            "sha256": "dae3cff962abf527491a770319bc68e5a44f31d16c1481e22d395cd1f83ffbf3",
            "source": "amazon-inspector",
            "versions": [
                "2.9.3"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / @asenfotech/unplugin-element-plus

Package

Name
@asenfotech/unplugin-element-plus
View open source insights on deps.dev
Purl
pkg:npm/%40asenfotech/unplugin-element-plus

Affected ranges

Affected versions

2.*
2.9.3
2.9.5

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    },
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "lib/gradle/runtime-launcher.cjs",
            "sha256": "01c13a519819855b75508ac02c58a2c11d02bacdb06f86840cb662a190640f25",
            "tlsh": "0f3132ca55f6227543d2015dd66f945bb647c143230dc8d0fafcc2c16fa672882729e9"
        },
        {
            "path": "lib/gradle/instrumentation/agent-bytecode.segments.cjs",
            "sha256": "825217e2465693951ea8b51519a4b7bf7aa3c58fae80c8b2a9884ac81e435e6b",
            "tlsh": "b6324ea6cc8f1d4453644906a9cd29c9188e07876dd23acdb3af82dc9b4e46f15f81ed"
        },
        {
            "path": "lib/gradle/instrumentation/decode-pipeline.cjs",
            "sha256": "5e07d23013be1ae653611d52d465dc7de7c20d7d43ae24659ea7fcbde7050c50",
            "tlsh": "b5e061ca29f0b10d03015cfb408bdc97719dc5273249dc91257876de7764fb891b68d8"
        },
        {
            "path": "lib/gradle/workspace-layout-probe.cjs",
            "sha256": "92d2d05625f7516549b7e95e9bcf19f7fc7092b32cc5e1e3ccfafb2ef52e90e3",
            "tlsh": "8b315790b1d337265cb3fb98f51e0404f5dec5a562049d12ba9d7ac13f439342271adc"
        },
        {
            "path": "package.json",
            "sha256": "8f7043c50a289e666e57d0dd73195a10c8797507c039e4801aeb2c7038c2acb4",
            "tlsh": "11012251d0681e7240f96aa90467a48f103007838849fd2832f7015c6f9f36b24ff5af"
        }
    ],
    "package_integrity": [
        {
            "filename": "unplugin-element-plus-2.9.5.tgz",
            "hashes": {
                "sha1": "9088281859da20d16dfc8352b10f8c771882c98c",
                "sha512_sri": "sha512-Bce9H6AlKoKgMsQoIzdQZrwsDwAoNz32j9YA4tXjOGH4rrzY/zAwEU3BGN7Wt+zUxVwgZsti2JMznYDwX2Bofw=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@asenfotech/unplugin-element-plus/MAL-2026-16318.json"