MAL-2026-12240

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tinkoff-fb-app-frame-page-height-dippy/MAL-2026-12240.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12240
Aliases
  • GHSA-4xh9-wm5m-39jp
Published
2026-08-05T09:03:38Z
Modified
2026-08-06T01:21:29.981498999Z
Summary
Malicious code in tinkoff-fb-app-frame-page-height-dippy (npm)
Details

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

Source: amazon-inspector (5db9a5313417dcbe6f8514736de7dd82892ad5cdccc261e0064d8f76f8d9613e)

On require, index.js loads platform.js, which reconstructs C2 hostnames via runtime string concatenation (joining fragments such as 'oob-worker.cf101-adf.workers.de'+'v' and 'tin.dl.well1'+'.si'+'te'), selects a per-OS/architecture binary, and downloads bytes over HTTPS from one of four anonymous Cloudflare Workers subdomains (oob-worker.cf101-adf.workers.dev, cf102-, cf103-, cf104-) with a DNS TXT-record fallback via well1.site. The retrieved payload is written to /tmp as a hidden dot-file (e.g. /tmp/.cache<rand>,.analyticsstate lock file) on POSIX or to %TEMP% as dotnetdiag<rand>.exe on Windows, chmodded 0755, and spawned detached via /bin/sh -c '<path> &' or cmd /c start. A shipped lib/telemetry.js further concatenates 'child'+'process' and 'chmod'+'Sync' to evade static analysis. The package name and description bear no relation to this behavior; the entire on-require code path is a binary dropper executing attacker-controlled native code on the installer's host.

Source: ghsa-malware (352c999918247ad135d65d4ff9da1f6e5e9788b5f574565f59ff30f2b227863e)

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": [
        {
            "modified_time": "2026-08-05T09:03:38Z",
            "id": "IN-MAL-2026-014527",
            "import_time": "2026-08-05T09:28:22.289924051Z",
            "versions": [
                "20.8.4"
            ],
            "source": "amazon-inspector",
            "sha256": "5db9a5313417dcbe6f8514736de7dd82892ad5cdccc261e0064d8f76f8d9613e"
        },
        {
            "modified_time": "2026-08-05T20:06:49Z",
            "id": "GHSA-4xh9-wm5m-39jp",
            "import_time": "2026-08-06T00:58:53.287671601Z",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "source": "ghsa-malware",
            "sha256": "352c999918247ad135d65d4ff9da1f6e5e9788b5f574565f59ff30f2b227863e"
        }
    ]
}
References
Credits

Affected packages

npm / tinkoff-fb-app-frame-page-height-dippy

Package

Name
tinkoff-fb-app-frame-page-height-dippy
View open source insights on deps.dev
Purl
pkg:npm/tinkoff-fb-app-frame-page-height-dippy

Affected ranges

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

Affected versions

20.*
20.8.4

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."
    }
]
indicators 
{
    "package_integrity": [
        {
            "filename": "tinkoff-fb-app-frame-page-height-dippy-20.8.4.tgz",
            "hashes": {
                "sha512_sri": "sha512-+2gLjSnxQBoWnAJp217DFORvK5mewccm/R5wobl9qUYRqRqeCE3R/a03u/5PWXSGrCbbU/SsVnWikExHjkGkFw==",
                "sha1": "4751b90cd8b0b350c906b26111e4c02c8f5956cc"
            }
        }
    ],
    "evidence_files": [
        {
            "path": "_platform.js",
            "tlsh": "36a1a69a1676701987b0abf48b175819f65bf6633380c2d4f76ca5944fb312482b2efc",
            "sha256": "f9b3d90f6f152654966585175c347c75a93a7bd4329d14c316ff051d15a91262"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tinkoff-fb-app-frame-page-height-dippy/MAL-2026-12240.json"