MAL-2023-1491

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/f0-data-constructor/MAL-2023-1491.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2023-1491
Aliases
  • GHSA-42r3-x9wh-9q73
Published
2023-08-19T17:23:08Z
Modified
2026-08-04T23:05:05.936088543Z
Summary
Malicious code in f0-data-constructor (npm)
Details

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

Source: amazon-inspector (23fc7101aab5c7172a2ab40e0e1ce62dbd251d5301f5efb5f4c30cab065bb5cd)

The package's preinstall hook auto-executes index.js on npm install. The script imports https and os, collects os.hostname(), os.platform(), os.arch(), os.homedir(), and dns.getServers(), and POSTs the JSON payload to the hardcoded host rb6etzw0lznpijvfl5m5ujmyrpxhl99y.oastify.com at path /hit. oastify.com is Burp Collaborator out-of-band infrastructure; the subdomain uniquely identifies the operator's Collaborator session. The behavior matches a dependency-confusion / typosquat reconnaissance beacon: no documented package purpose, no consent, and the collected fields exist solely to identify the installer host to the operator.

Source: ghsa-malware (ce363be4d04420ff3e74a29fbcb5807cde29ca45f3e1dfd2b2e1c2aaa35b6c41)

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Source: ossf-package-analysis (203b615a64203063f94994f1dbe5118a11c9543bfc3f4d47322f54aabb61f814)

The OpenSSF Package Analysis project identified 'f0-data-constructor' @ 28.0.0 (npm) as malicious.

It is considered malicious because:

  • The package communicates with a domain associated with malicious activity.
Database specific 
{
    "malicious-packages-origins": [
        {
            "import_time": "2023-08-19T17:34:10.700146611Z",
            "sha256": "9133720bff10d051149c2acb0dcab98768e9badae42fe211352aa258afd49c28",
            "modified_time": "2023-08-19T17:23:08.841551693Z",
            "source": "ossf-package-analysis",
            "versions": [
                "1.0.0"
            ]
        },
        {
            "import_time": "2026-07-25T09:38:34.100793216Z",
            "source": "ossf-package-analysis",
            "modified_time": "2026-07-25T09:24:33Z",
            "sha256": "203b615a64203063f94994f1dbe5118a11c9543bfc3f4d47322f54aabb61f814",
            "versions": [
                "28.0.0"
            ]
        },
        {
            "import_time": "2026-07-28T02:02:02.899096Z",
            "source": "ghsa-malware",
            "modified_time": "2026-07-27T16:15:19Z",
            "sha256": "ce363be4d04420ff3e74a29fbcb5807cde29ca45f3e1dfd2b2e1c2aaa35b6c41",
            "id": "GHSA-42r3-x9wh-9q73",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ]
        },
        {
            "import_time": "2026-08-04T22:30:01.165367979Z",
            "source": "amazon-inspector",
            "modified_time": "2026-08-04T21:37:48Z",
            "sha256": "23fc7101aab5c7172a2ab40e0e1ce62dbd251d5301f5efb5f4c30cab065bb5cd",
            "id": "IN-MAL-2026-011137",
            "versions": [
                "28.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / f0-data-constructor

Package

Name
f0-data-constructor
View open source insights on deps.dev
Purl
pkg:npm/f0-data-constructor

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.0.0
28.*
28.0.0

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/f0-data-constructor/MAL-2023-1491.json"
indicators 
{
    "evidence_files": [
        {
            "sha256": "5168616746efb37936722f7914c0ce52794ecc5538bf85ce925b8ebc64a658e8",
            "tlsh": "23f081d4d6f96a610b7699c0b0b6950a5373e662780bf8e05fc8026607cddfc05b56f4",
            "path": "index.js"
        }
    ]
}
cwes 
[
    {
        "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",
        "description": "The product contains code that appears to be malicious in nature."
    }
]