MAL-2026-13251

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bigops-status-selection/MAL-2026-13251.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13251
Aliases
  • GHSA-r2qr-xq83-5p7q
Published
2026-08-05T15:34:12Z
Modified
2026-08-06T01:19:52.912979612Z
Summary
Malicious code in bigops-status-selection (npm)
Details

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

Source: amazon-inspector (00ac52845dd473e3c39d37b9f3916ed67f48cabfb276bc8cc2e9ca2dca401ce5)

On require(), bootstrap.js selects a platform-specific path, fetches a binary from one of three hardcoded *.workers.dev hosts (oob-worker.cf103-070.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf99-9b3.workers.dev) with a DNS TXT-record fallback channel over *.dl.wel1.ru subdomains, writes it to /tmp or %TEMP% under a disguised name (.cache<tag> / dotnetdiag<tag>.exe), chmods 0755, and detached-spawns it via /bin/sh -c or cmd /c start (_bootstrap.js line 119, 121, 125). Destination hostnames are split across array joins to evade static string search, and a secondary loader reassembles a base64 payload from indexed DNS TXT records (count from c.<domain>, chunks from <i>.<domain>). Cover-story comments frame the behavior as analytics/telemetry.

Source: ghsa-malware (9e7caf9639d9018e9b2d1b267b2ac9aa3910b7c1554c960ac992a948d435b7ae)

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": [
        {
            "import_time": "2026-08-05T16:13:39.882260317Z",
            "modified_time": "2026-08-05T15:34:12Z",
            "id": "IN-MAL-2026-015749",
            "sha256": "00ac52845dd473e3c39d37b9f3916ed67f48cabfb276bc8cc2e9ca2dca401ce5",
            "versions": [
                "35.3.2"
            ],
            "source": "amazon-inspector"
        },
        {
            "import_time": "2026-08-06T00:58:53.44086655Z",
            "modified_time": "2026-08-05T18:30:37Z",
            "id": "GHSA-r2qr-xq83-5p7q",
            "sha256": "9e7caf9639d9018e9b2d1b267b2ac9aa3910b7c1554c960ac992a948d435b7ae",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / bigops-status-selection

Package

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

Affected ranges

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

Affected versions

35.*
35.3.2

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    },
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bigops-status-selection/MAL-2026-13251.json"
indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-dvif1c62/VVi0x4WtddNTvpotwr1RWrJg7rHRzcICfT8KRR6OdsPjlaYVAMPeorwu9vcVHzG4MBxhTrNvGTQeA==",
                "sha1": "57efa35a3c5d97d50763f59965e11d44f57ee224"
            },
            "filename": "bigops-status-selection-35.3.2.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "_bootstrap.js",
            "tlsh": "b2a18696166670194bb0a7e4c617441af65bf6633780c294fb9ca8981f72128c3b2eec",
            "sha256": "13f67797061ce99c982a12755ee18751e7c14ab81cce1a343f0ab0b11a14e646"
        }
    ]
}