Malicious code in css-nbanqq-polyfill (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (7377a70c94f8fd1719147b2023860926935a70410f672e07411326284f11a69f) The package impersonates Wix thunderbolt internal registry modules (exporting `thunderboltRegistry`, `siteAssetsRegistry`, `editorRegistry`, `corvidRegistry`, etc. and shipping a `registry-manifest.min.json` referencing static.parastorage.com) as a dependency-confusion lure. On require of thunderboltRegistry.js, a top-level IIFE uses child_process.execSync to run `id`, `whoami`, `uname -a`, `ifconfig`/`ip addr`, and `cat /etc/hosts`, URL-encodes the output together with hostname, Node version, platform, and pid, and sends it via fetch to the hardcoded attacker endpoint http://dxpoc.gt.tc/callback.php/bb8968d0f67000433bf7005dd5ad2d1f. Proxy-wrapped stubs make the require() call appear to resolve normally while the exfiltration runs. Any build or runtime that resolves this package name will execute the reconnaissance payload and leak host identity and network configuration to the attacker-controlled host.
MAL-2026-17555
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:MAL-2026-17555
css-nbanqq-polyfill
Source reference: /affected/0/package/name
- Affected versions
- 1.0.0
Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"package": {
"name": "css-nbanqq-polyfill",
"purl": "pkg:npm/css-nbanqq-polyfill",
"ecosystem": "npm"
},
"versions": [
"1.0.0"
],
"database_specific": {
"cwes": [
{
"name": "Embedded Malicious Code",
"cweId": "CWE-506",
"description": "The product contains code that appears to be malicious in nature."
}
],
"source": "https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/css-nbanqq-polyfill/MAL-2026-17555.json",
"indicators": {
"evidence_files": [
{
"path": "thunderboltRegistry.js",
"tlsh": "e87154a5b99df02065c33438cb7f4049b4bbc6672d6caee0744899b01f7985c01be6f8",
"sha256": "a485cb48081ea590cab385a405886cfe6f30af7d415f30bc8d7937ace461b928"
}
],
"package_integrity": [
{
"hashes": {
"sha1": "173ab1b2e46712e9da9269c952e43aca1d2763d6",
"sha512_sri": "sha512-waeHo5RpZ3D01CpUL8ZvjNwC5UUJetTCLMWk7Um5lJViHp0RpW/fQHRF73ZjkO3uw7gaaIP2fTNPlGj45Ovdlg=="
},
"filename": "css-nbanqq-polyfill-1.0.0.tgz"
}
]
}
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #83626 · Revision 1
- Added to Heist Feed
- Publisher date