-= Per source details. Do not edit below this line.=-
index.js uses child_process to execute whoami and gather hostname information, then transmits results via https.get to api.telegram.org/bot — a well-known pattern for Telegram-bot-based C2/exfiltration. The package name mimics a corporate UI library but the code performs system reconnaissance and exfiltration of installer host data, with no legitimate UI-library functionality indicated at the entry point. Any installer or build system that pulls this package will leak the machine's user and hostname to an attacker-controlled Telegram bot on require/load. Three independent static detections (child-process + https exfiltration, nodejs system exfiltration, simple sysinfo exfiltration) corroborate a single small file implementing a classic recon beacon.
The OpenSSF Package Analysis project identified '@corpweb-ui/wmkt-library' @ 99.99.11 (npm) as malicious.
It is considered malicious because:
{
"malicious-packages-origins": [
{
"source": "ossf-package-analysis",
"versions": [
"99.99.11"
],
"import_time": "2026-04-03T09:49:15.440649535Z",
"modified_time": "2026-04-03T08:18:07Z",
"sha256": "e04e7522e73249638f1fd02bc8b13369626291222da0a2ba1612bbcba6a14bad"
},
{
"source": "amazon-inspector",
"versions": [
"99.99.11"
],
"import_time": "2026-04-07T14:39:22.783084434Z",
"modified_time": "2026-04-07T14:24:50Z",
"sha256": "7edd228a2ceff9b781a1fa9bf0f6a32f96b742da2d2eee702c009c091ecee3d6"
},
{
"source": "amazon-inspector",
"id": "IN-MAL-2026-002440",
"versions": [
"99.99.11"
],
"import_time": "2026-05-13T20:10:56.906010751Z",
"modified_time": "2026-05-12T19:03:07Z",
"sha256": "bbd8ffd61a62a041699d312b4988f76acecc9d1318b91105bd80c8ae06760dff"
},
{
"source": "amazon-inspector",
"id": "IN-MAL-2026-002441",
"versions": [
"99.99.12"
],
"import_time": "2026-05-13T20:10:57.014058326Z",
"modified_time": "2026-05-12T19:03:07Z",
"sha256": "dfd12ddf708e12b032513bcf667e459df772f642106507d1798d95ee81f6cbe2"
}
]
}"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@corpweb-ui/wmkt-library/MAL-2026-2446.json"
{
"evidence_files": [
{
"path": "index.js",
"tlsh": "45210fda063d5d2222a254c39257b01ffa830913a254fda17caa43a19fd70f183597fa",
"sha256": "f35fd3dd7a6cf30b117683de7a6839c36716340ea00af4b29dc2305dd669d3a5"
}
],
"package_integrity": [
{
"filename": "wmkt-library-99.99.11.tgz",
"hashes": {
"sha1": "ade827fd1bf51dc8446b1a877e1d19db623b6d2f",
"sha512_sri": "sha512-ezIDlk6h17fFD249yujuZU71tPIRHKKN1U6VkFjvRTLPM9E5RGOdzIGe1kv/uMIVA0dEwGLocEeeG6GlttAawg=="
}
}
]
}
[
{
"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",
"cweId": "CWE-506"
}
]