MAL-2026-12231

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tinkoff-boxy-form-desktop-sme-registration-ooo/MAL-2026-12231.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12231
Published
2026-08-05T08:52:33Z
Modified
2026-08-05T10:06:35.719596424Z
Summary
Malicious code in tinkoff-boxy-form-desktop-sme-registration-ooo (npm)
Details

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

Source: amazon-inspector (bd92a77dddf46c2afa43b4db0127eea04dfde2afa2ba45e7c43965c06249997e)

Package name typosquats Tinkoff's official SME registration form. On require() of the package, index.js loads ext.js, which reconstructs attacker-controlled hostnames from string fragments (e.g. 'oob-worker.cf101-adf.workers.dev' and 'tin.dl.well1.site'), fetches a platform-specific binary over HTTPS, and falls back to reconstructing the payload from base64 chunks served in DNS TXT records under *.dl.well1.site when HTTPS is unavailable. The fetched bytes are written to /tmp or %TEMP% under disguised filenames (dotnetdiag<rand>.exe,.cache<rand>, loader_mac), marked executable with chmod 0755 on Unix, and spawned detached via cp.spawn('/bin/sh', ['-c', fp + ' &']) on Unix or cp.spawn('cmd.exe', ['/c', 'start', '/b', fp]) on Windows. The dropper is unrelated to the package's advertised purpose as a form/SDK.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-08-05T08:52:33Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-014452",
            "import_time": "2026-08-05T09:28:12.724213705Z",
            "sha256": "bd92a77dddf46c2afa43b4db0127eea04dfde2afa2ba45e7c43965c06249997e",
            "versions": [
                "20.4.5"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / tinkoff-boxy-form-desktop-sme-registration-ooo

Package

Name
tinkoff-boxy-form-desktop-sme-registration-ooo
View open source insights on deps.dev
Purl
pkg:npm/tinkoff-boxy-form-desktop-sme-registration-ooo

Affected ranges

Affected versions

20.*
20.4.5

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "tinkoff-boxy-form-desktop-sme-registration-ooo-20.4.5.tgz",
            "hashes": {
                "sha512_sri": "sha512-zEUVtkCHRp7j6m5yN+5lOZxHm6cDoWi3iVrQSSC0xXRzBCywjgzxfbfYhhRK7/i45ACFW95uHzvLHw3tf8Jymw==",
                "sha1": "22de14362a04c0f0f1253beefe7c23ad0a3be0a0"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "eda1b796067970198bb0dbe487174416f65bf6633380c294fbaca9985f76124c3b2efc",
            "sha256": "350ad08e212a5ad48955dd6b878c6ccc6b371e85ff5fbea063fd34c8e3fa5ed7",
            "path": "_ext.js"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tinkoff-boxy-form-desktop-sme-registration-ooo/MAL-2026-12231.json"
cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]