mal-2026-17572
Vulnerability from ossf_malicious_packages
checkmate-remediation-assistant@1.0.0 contains no functional code: its only behaviour is a preinstall script that runs node index.js on npm install. index.js collects the install directory, the user's home directory, hostname, username and DNS servers, and the full contents of /etc/passwd and /etc/hosts, then sends them as JSON in an HTTPS POST to 9q0lp9mr6ek7nrnklhzkmbpuglmda4yt.oastify.com, a Burp Collaborator endpoint. The npm account testneo7755 published it on 2026-10-05 and it was unpublished about two minutes later; the same account published with-cte the same day with the same index.js and a different Collaborator subdomain.
-= Per source details. Do not edit below this line.=-
Source: amazon-inspector (c8f55d0ebeea19e228ec6edbb1782df87539c476478d3935559fda90a458b1b4)
The package's package.json declares a preinstall hook that runs index.js on npm install. index.js collects os.hostname(), os.userInfo(), the home directory, DNS server configuration, __dirname, the local package.json, and the contents of /etc/passwd and /etc/hosts, then transmits the collected data over HTTPS to a hardcoded Burp Collaborator (oastify.com) subdomain (9q0lp9mr6ek7nrnklhzkmbpuglmda4yt.oastify.com). The destination is an out-of-band interaction server not associated with any declared publisher or documented package purpose, and the exfiltration fires automatically on default install without user interaction.
{
"affected": [
{
"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": "index.js",
"sha256": "c3b9a6b9837af57b17acac41d279a905d70365d3d9e57284c8c217b7508d78ca",
"tlsh": "5d412395a2c917330dd210c06a1c70843359fa777269a8d076cf42969f869f8b7326f3"
}
],
"package_integrity": [
{
"filename": "checkmate-remediation-assistant-1.0.0.tgz",
"hashes": {
"sha1": "1116b68d5c21ed65ff06b2edc7dfad7181636bf7",
"sha512_sri": "sha512-Svgam2vzDqxOjZDANOlRGP+NDkxy6eyoq3NGdsJt2sUH+9YYxgnL8cxwM5DZG6T86bcT5JUS1tbJtHIYrCIrLw=="
}
}
]
}
},
"package": {
"ecosystem": "npm",
"name": "checkmate-remediation-assistant"
},
"versions": [
"1.0.0"
]
}
],
"credits": [
{
"contact": [
"inspector-research@amazon.com"
],
"name": "Amazon Inspector",
"type": "FINDER"
},
{
"contact": [
"https://www.invisirisk.com",
"mailto:research@invisirisk.com"
],
"name": "InvisiRisk, Inc.",
"type": "FINDER"
}
],
"database_specific": {
"iocs": {
"domains": [
"9q0lp9mr6ek7nrnklhzkmbpuglmda4yt.oastify.com"
],
"files": [
{
"digests": {
"sha256": "2a7881b42271bb9aa87855e0af958857c1b6acaa670150481baef0847dd78f43"
},
"note": "preinstall script runs `node index.js`.",
"paths": [
"package.json"
],
"source": "PACKAGE_ARCHIVE"
},
{
"digests": {
"sha256": "c3b9a6b9837af57b17acac41d279a905d70365d3d9e57284c8c217b7508d78ca"
},
"note": "Executed by the preinstall script of checkmate-remediation-assistant@1.0.0.",
"paths": [
"index.js"
],
"source": "PACKAGE_ARCHIVE"
}
],
"urls": [
"https://9q0lp9mr6ek7nrnklhzkmbpuglmda4yt.oastify.com/"
]
},
"malicious-packages-origins": [
{
"id": "IN-MAL-2026-021081",
"import_time": "2026-10-05T16:22:57.119740865Z",
"modified_time": "2026-10-05T16:15:03Z",
"sha256": "c8f55d0ebeea19e228ec6edbb1782df87539c476478d3935559fda90a458b1b4",
"source": "amazon-inspector",
"versions": [
"1.0.0"
]
}
]
},
"details": "checkmate-remediation-assistant@1.0.0 contains no functional code: its only behaviour is a preinstall script that runs `node index.js` on npm install. index.js collects the install directory, the user\u0027s home directory, hostname, username and DNS servers, and the full contents of /etc/passwd and /etc/hosts, then sends them as JSON in an HTTPS POST to `9q0lp9mr6ek7nrnklhzkmbpuglmda4yt.oastify.com`, a Burp Collaborator endpoint. The npm account testneo7755 published it on 2026-10-05 and it was unpublished about two minutes later; the same account published with-cte the same day with the same index.js and a different Collaborator subdomain.\n\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (c8f55d0ebeea19e228ec6edbb1782df87539c476478d3935559fda90a458b1b4)\nThe package\u0027s package.json declares a preinstall hook that runs index.js on npm install. index.js collects os.hostname(), os.userInfo(), the home directory, DNS server configuration, __dirname, the local package.json, and the contents of /etc/passwd and /etc/hosts, then transmits the collected data over HTTPS to a hardcoded Burp Collaborator (oastify.com) subdomain (9q0lp9mr6ek7nrnklhzkmbpuglmda4yt.oastify.com). The destination is an out-of-band interaction server not associated with any declared publisher or documented package purpose, and the exfiltration fires automatically on default install without user interaction.\n",
"id": "MAL-2026-17572",
"modified": "2026-10-07T06:20:52.903543885Z",
"published": "2026-10-05T09:02:39Z",
"references": [
{
"type": "PACKAGE",
"url": "https://www.npmjs.com/package/checkmate-remediation-assistant/v/1.0.0"
},
{
"type": "PACKAGE",
"url": "https://www.npmjs.com/package/checkmate-remediation-assistant"
}
],
"schema_version": "1.7.4",
"summary": "Malicious code in checkmate-remediation-assistant (npm)"
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.