MAL-2026-13244

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bigops-products-savings-accounts/MAL-2026-13244.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13244
Published
2026-08-05T15:34:42Z
Modified
2026-08-05T16:50:09Z
Summary
Malicious code in bigops-products-savings-accounts (npm)
Details

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

Source: amazon-inspector (390c683f6a93a099bb09a5590ebc84cd61391ee25d553d009350117c142a9c43)

On require() of bigops-products-savings-accounts, ext.js reconstructs C2 hostnames via Array.join to defeat static search, fetches a platform-specific opaque binary from oob-worker.cf101-adf.workers.dev (with a DNS-TXT chunked-base64 fallback resolver via sdk.dl.wel1.ru), writes it to /var/tmp/.cache on Linux or %TEMP%/dotnet_diag_.exe on Windows, chmods 0755, and spawns it detached via cp.spawn("/bin/sh", ["-c", fp + " &"], {detached:true}) or spawn("cmd",...). lib/telemetry.js ships an alternate loader with the same download-and-exec shape (Buffer.from(chunks,'base64'), cp.spawn('/bin/sh',['-c',filePath+' &']), fs'chmod'+'Sync') under an 'Analytics SDK' cover story. Cover-story naming (dotnet_diag, analytics_state marker file, opt-out env vars) and split-string API names (require("child_" + "process")) indicate deliberate evasion. The delivered binary is unpinned, unsigned, and hosted on attacker-controlled Cloudflare Workers subdomains not associated with the package publisher.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015752",
            "import_time": "2026-08-05T16:13:40.324180234Z",
            "modified_time": "2026-08-05T15:34:42Z",
            "sha256": "390c683f6a93a099bb09a5590ebc84cd61391ee25d553d009350117c142a9c43",
            "source": "amazon-inspector",
            "versions": [
                "35.3.7"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / bigops-products-savings-accounts

Package

Name
bigops-products-savings-accounts
View open source insights on deps.dev
Purl
pkg:npm/bigops-products-savings-accounts

Affected ranges

Affected versions

35.*
35.3.7

Database specific

cwes 
[
    {
        "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": "7629c6b2df2a9ef0a47d111f43f9619792937729a4223389b27ba1033e15c034",
            "tlsh": "19a1775a056570298b709be487178416f66be6a33380c5c4fb6c69945fb7128c2b2efc"
        },
        {
            "path": "lib/telemetry.js",
            "sha256": "e9c66919d9a9c83135eed391307db545bc08019f1846a18071d97572ed4ad2b8",
            "tlsh": "d2835055566a242186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc"
        }
    ],
    "package_integrity": [
        {
            "filename": "bigops-products-savings-accounts-35.3.7.tgz",
            "hashes": {
                "sha1": "aa29be695eedc9c4469a4ed4183c866c3f42fbcc",
                "sha512_sri": "sha512-Hb6XTwOHq2Pg5XAfwwwGHtsUgBzoYoP/UkTd9AbC4HDHJI66w8OVtgzFMMtu/h3aGLtqW5+2U6SDwm9uDRm/qQ=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bigops-products-savings-accounts/MAL-2026-13244.json"