-= Per source details. Do not edit below this line.=-
The package registers a preinstall hook (node index.js) that runs on npm install and harvests installer-side data: os.hostname(), OS username, home directory, local IPv4, public IP resolved via https://api.ipify.org / https://icanhazip.com / https://ifconfig.me, DNS resolver info, INIT_CWD, parent project package.json fields, CI context (GitHub Actions/GitLab/Jenkins/Azure DevOps repo, actor, run id), AWS_REGION, npm registry URL, git user.email domain, and the output of gh api user --jq.login and npm whoami — using the installer's authenticated gh/npm CLI sessions to attribute the install to a real developer account. The collected JSON is hex-encoded, split into 60-character chunks, and exfiltrated via DNS resolutions of the form <i>-<hex>.u-<uuid>.da51rv0hb2uc72tg4gvgdepinjcallbk1.oast.fun (an OAST/interactsh callback host) as well as HTTPS/HTTP POSTs to /poc/ at the same host. A source comment describes the DNS channel as designed to survive corporate egress filtering. The version number 999.9.15 is a dependency-confusion overshoot intended to win private-name resolution against an internal package of the same name.
The OpenSSF Package Analysis project identified '@temptation.js/utils' @ 999.9.16 (npm) as malicious.
It is considered malicious because:
{
"malicious-packages-origins": [
{
"import_time": "2026-08-24T13:51:35.952648601Z",
"modified_time": "2026-08-24T13:50:49Z",
"sha256": "c8d0cfc44fc0fd8c597831c7da133a0e02ba0f1644f9777edb7629099bb367b8",
"source": "ossf-package-analysis",
"versions": [
"999.9.16"
]
},
{
"id": "IN-MAL-2026-018627",
"import_time": "2026-08-24T16:49:13.316680299Z",
"modified_time": "2026-08-24T16:38:40Z",
"sha256": "b729ceb1ad2301a684d94c580ee75c4d6b352fd05061b84076e959975645777b",
"source": "amazon-inspector",
"versions": [
"999.9.16"
]
},
{
"id": "IN-MAL-2026-018631",
"import_time": "2026-08-24T16:49:13.596551896Z",
"modified_time": "2026-08-24T16:39:22Z",
"sha256": "3b8ac41747a5c926627c28c9f1a651df91cd3447b07ca4cafabc1916004d1e70",
"source": "amazon-inspector",
"versions": [
"999.9.15"
]
}
]
}[
{
"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"
}
]
{
"evidence_files": [
{
"path": "index.js",
"sha256": "f77db9c8f574d32a28c10108a6a19b4f1e6885e06f5644f595f7cfd6ea8f8f6a",
"tlsh": "2412c79702f6243013e265682e8784c4776bd517374aebf0b94d47605fee26883b37ea"
}
],
"package_integrity": [
{
"filename": "utils-999.9.16.tgz",
"hashes": {
"sha1": "e1dfb52779eae91993df2ab36f3f571f91cd89eb",
"sha512_sri": "sha512-lFhEBJBR/FYinqeqjIrizSC/Zjy7/MO5dPbXD913aig3g6hZ9o/2V6gDHYIw0W38/OMZbeVLZ/musQ1JaxYPEA=="
}
}
]
}
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@temptation.js/utils/MAL-2026-14410.json"