MAL-2026-12280

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tinkoff-terminal-kit-datetime/MAL-2026-12280.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12280
Published
2026-08-05T08:58:53Z
Modified
2026-08-05T10:06:58.023958384Z
Summary
Malicious code in tinkoff-terminal-kit-datetime (npm)
Details

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

Source: amazon-inspector (3ff5d079ddd6e9ef6bd552f3a33ec5d0c87dcad3dce14013cbf28cbaa37a1dc1)

The package's main index.js unconditionally requires runtime.js, which on any require/import selects a platform-specific endpoint and downloads an opaque binary over HTTPS from author-controlled Cloudflare Workers hosts (oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf103-070.workers.dev), with a DNS TXT chunked-base64 fallback via tin.dl.well1.site, tina.dl.well1.site, ldr.dl.well1.site, and win.dl.well1.site. The destination hostnames are assembled from split string fragments (e.g. "oob-worker.cf100-416.wor"+"ke"+"rs.de"+"v") and require is accessed indirectly (require("child"+"process")) to defeat static analysis. The downloaded bytes are written to /tmp or %TEMP% under a disguised name (.cache<hex> on Unix, dotnetdiag<hex>.exe on Windows), chmod 0755, and spawned detached via /bin/sh -c or cmd.exe with unref(). There is no version pinning, no hash or signature verification, and the package's declared purpose is a datetime library with no legitimate need for a native binary. A sibling lib/telemetry.js repeats the same childprocess + base64 + chmod 755 pattern. The name resembles a Tinkoff-adjacent scope, consistent with a typosquat lure delivering an opaque second-stage payload.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-08-05T08:58:53Z",
            "source": "amazon-inspector",
            "sha256": "3ff5d079ddd6e9ef6bd552f3a33ec5d0c87dcad3dce14013cbf28cbaa37a1dc1",
            "import_time": "2026-08-05T09:28:18.578716605Z",
            "id": "IN-MAL-2026-014495",
            "versions": [
                "20.7.2"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / tinkoff-terminal-kit-datetime

Package

Name
tinkoff-terminal-kit-datetime
View open source insights on deps.dev
Purl
pkg:npm/tinkoff-terminal-kit-datetime

Affected ranges

Affected versions

20.*
20.7.2

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "tinkoff-terminal-kit-datetime-20.7.2.tgz",
            "hashes": {
                "sha512_sri": "sha512-pH0QA3nppZHdsvFBDq/jSZouUfkU0DQjrkZKLNCbyVnFzBg8v+aR+aHT2HtjbZ1TBDT0rro8EpWQ5Xjcd7PC/g==",
                "sha1": "d02cb6e5544db12ebf7abde9dbf6f6074974adbb"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "79b1b86a156670194b70d7e1cb17540af667f65333808294fb9c99984fb2224c3f2efc",
            "sha256": "2659db37a9ed2ba715355482b3d56bd764730fec04a4a160d1ed7bc17eb248f4",
            "path": "_runtime.js"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tinkoff-terminal-kit-datetime/MAL-2026-12280.json"
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]