MAL-2026-13253

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bigops-storio-ngrx/MAL-2026-13253.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13253
Aliases
  • GHSA-v9j9-x22c-rgjq
Published
2026-08-05T15:33:01Z
Modified
2026-08-06T01:19:54Z
Summary
Malicious code in bigops-storio-ngrx (npm)
Details

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

Source: amazon-inspector (6eb386f3b0d35ecf71762d0e719f883a3e1e207a2a3a9e1f52e7729de7753ae0)

On require(), index.js loads./ext.js which selects a per-OS asset path and downloads a binary payload from one of three runtime-assembled Cloudflare Workers hosts (oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev), with a DNS TXT covert-channel fallback that reassembles a base64 payload from numbered subdomains under sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched bytes are written to /var/tmp/.cache on Unix or %TEMP%\dotnet_diag_.exe on Windows, chmod 0755, and spawned detached via spawn("/bin/sh", ["-c", path + " &"]) or spawn("cmd",...). Host strings are constructed via array-split.join("") to evade static inspection, and there is no hash or signature verification. Staging paths mimic system diagnostics names to blend in.

Source: ghsa-malware (b9e509d532bb46f434ea0a124cf22b50558357d28e0a316974709d2a7bde00dc)

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.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015741",
            "import_time": "2026-08-05T16:13:38.943967637Z",
            "modified_time": "2026-08-05T15:33:01Z",
            "sha256": "6eb386f3b0d35ecf71762d0e719f883a3e1e207a2a3a9e1f52e7729de7753ae0",
            "source": "amazon-inspector",
            "versions": [
                "35.2.2"
            ]
        },
        {
            "id": "GHSA-v9j9-x22c-rgjq",
            "import_time": "2026-08-06T00:58:53.458217004Z",
            "modified_time": "2026-08-05T18:35:03Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "b9e509d532bb46f434ea0a124cf22b50558357d28e0a316974709d2a7bde00dc",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / bigops-storio-ngrx

Package

Name
bigops-storio-ngrx
View open source insights on deps.dev
Purl
pkg:npm/bigops-storio-ngrx

Affected ranges

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

Affected versions

35.*
35.2.2

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": "_ext.js",
            "sha256": "05712a0f496a166732e3e1e21154a5c3e54675931f88340986058a5d1e55822a",
            "tlsh": "65a1a89a06a6701d4bb0ebe4ca1b4815f55bf55337808284fb5c75985fb36248372efc"
        }
    ],
    "package_integrity": [
        {
            "filename": "bigops-storio-ngrx-35.2.2.tgz",
            "hashes": {
                "sha1": "e127df829b6a6dc49a31c21bf0a4072d52de53d2",
                "sha512_sri": "sha512-EfF2/MyCxbJyzC3sGAlIYoaR+vdWGDOTqbaPS4u+rOH+8T2GwSE9inZFsaEX66dTVIRzADaj55W9G9OOAYgIBw=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bigops-storio-ngrx/MAL-2026-13253.json"