MAL-2026-12396

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/log-min/MAL-2026-12396.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12396
Published
2026-08-05T12:35:07Z
Modified
2026-08-05T13:35:34Z
Summary
Malicious code in log-min (npm)
Details

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

Source: amazon-inspector (5dc78815e8c40947273929a7224aa04230de911771e62580045fb8bb213468c9)

The package publishes as 'log-min' with a description claiming it is a JavaScript library for the Theta Blockchain, while its README identifies the project as 'chain-sdk-js' — an impersonation of the Theta chain-sdk-js SDK. package.json declares postinstall 'node src', which loads src/providers/BaseProvider.js. That module's top-level IIFE imports an opaque blob 'desKey' from the 'thedata' npm dependency, DES-decrypts it with the hardcoded password 'hydra', spawns a detached 'node' child process with piped stdin and ignored stdio, writes the decrypted code into the child's stdin, and unrefs the child so it survives the installer. The identical decrypt-and-exec pattern is also present at the top level of the shipped CJS bundle dist/log-min.cjs.js, so the dropper fires both at 'npm install' via the postinstall hook and whenever any consumer require()s the package. The executed bytes originate in a separate dependency ('thedata') and are not present in the log-min tarball, giving the author of that dependency arbitrary code execution on any machine that installs or imports log-min.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-014716",
            "import_time": "2026-08-05T13:08:40.245100227Z",
            "modified_time": "2026-08-05T12:35:07Z",
            "sha256": "5dc78815e8c40947273929a7224aa04230de911771e62580045fb8bb213468c9",
            "source": "amazon-inspector",
            "versions": [
                "1.0.13"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / log-min

Package

Name
log-min
View open source insights on deps.dev
Purl
pkg:npm/log-min

Affected ranges

Affected versions

1.*
1.0.13

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": "src/providers/BaseProvider.js",
            "sha256": "760f0299e1f8201b5366de8c37a4df3e4f796c862da4c2eec5431b8a2be05197",
            "tlsh": "8f51fe2536fb613146a770a32bef9011703ad0433a0cce58badc87865fdc86c8da5fa5"
        },
        {
            "path": "dist/log-min.cjs.js",
            "sha256": "8c9ea0104112308525f04b246b549c4e3621812de042385fb3bcda27bc83ac26",
            "tlsh": "6e63939d26e7a060815b70b56fdb94407129e00b68ccd82cbdac53958fd946c9bf2ff8"
        },
        {
            "path": "README.md",
            "sha256": "187a68752ff810e9a95953b762d721943c751f0fbb8713d628bed4a3a1b1646d",
            "tlsh": "9301d0f7970b212531930a5d269256e89e57930699520cec00e933b4d759397c83e745"
        }
    ],
    "package_integrity": [
        {
            "filename": "log-min-1.0.13.tgz",
            "hashes": {
                "sha1": "ec3cd6f6799dc1bc35d0968a7a9d059df43593aa",
                "sha512_sri": "sha512-DDzr/N829I7R4Y5B6N35mjEz3q7pBGkvo9yjJuNStF7MutRyfuKdzRzlLDRkzCLK+Uz4QM2Jt623J73tqrzwFg=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/log-min/MAL-2026-12396.json"