MAL-2026-16436

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/efhthrthrthregerht/MAL-2026-16436.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-16436
Published
2026-09-23T01:36:34Z
Modified
2026-09-23T02:00:06Z
Summary
Malicious code in efhthrthrthregerht (npm)
Details

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

Source: amazon-inspector (4845639223c486cf2d33751ad950cea4c7f70401877929d25c36e7d07655d820)

The package's postinstall hook runs index.js, which collects the installer's OS username, current working directory, hostname, and local IPv4 address and POSTs them as JSON to a hardcoded webhook.site collector URL (https://webhook.site/f9bff304-3053-4d54-be05-86537267514a) on npm install. The package name is a random keyboard-mash string with no documented purpose, and the only on-install behavior is the outbound beacon to an anonymous ephemeral webhook endpoint controlled by whoever created the webhook.site token.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-020322",
            "import_time":  "2026-09-23T01:50:18.729889547Z",
            "modified_time":  "2026-09-23T01:36:34Z",
            "sha256":  "4845639223c486cf2d33751ad950cea4c7f70401877929d25c36e7d07655d820",
            "source":  "amazon-inspector",
            "versions":  [
                "99.9.9"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / efhthrthrthregerht

Package

Name
efhthrthrthregerht
View open source insights on deps.dev
Purl
pkg:npm/efhthrthrthregerht

Affected ranges

Affected versions

99.*
99.9.9

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":  "index.js",
            "sha256":  "a07fd09c2dccd9dcbe917ab7def77cfff55b6f6ea89ab4d6422de1542d12ca1f",
            "tlsh":  "ac11cee58cab10100eb177b14c024805f7225722b51a9781b9bcc19d2fa69a5a271eec"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "efhthrthrthregerht-99.9.9.tgz",
            "hashes":  {
                "sha1":  "f2ddb8db11678f5288f77d5184c22814d04da47a",
                "sha512_sri":  "sha512-YgCWjWp4Bkx43ryQmiLMWXm+wHfo1sgFGe0bpZQOqhsy427JFg4rTCQrmyDh/yt+su5SLqvWln4IXAeds5AsIw=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/efhthrthrthregerht/MAL-2026-16436.json"