MAL-2026-12256

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tinkoff-statist-browser-typed-client-coretech.statist.mobile.ci/MAL-2026-12256.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12256
Aliases
  • GHSA-3frj-gg7c-mc4m
Published
2026-08-05T09:03:04Z
Modified
2026-08-06T01:21:33.595671017Z
Summary
Malicious code in tinkoff-statist-browser-typed-client-coretech.statist.mobile.ci (npm)
Details

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

Source: amazon-inspector (c9d1b853fe0164696ce54aa2550929d727c9ea06d42925934efacf57aeae3ff7)

On require() of the package, index.js loads loader.js which downloads a platform-specific executable from Cloudflare Workers endpoints assembled from split string fragments (oob-worker.cf103-070.workers.dev and related tin.dl.well1.site / tina.dl.well1.site / ldr.dl.well1.site / win.dl.well1.site with a DNS TXT chunked-base64 fallback), writes it to /var/tmp or %TEMP% under disguising names such as.cache<hex> and dotnetdiag<hex>.exe, chmods 0755 on Unix, and spawns it detached via cmd.exe or /bin/sh. Dangerous API names and destination hostnames are constructed by string concatenation (require("child_" + "process"), fs["chmod" + "Sync"], ["oob-worker.","cf10",...].join("")) to evade static analysis. A stamp file at /tmp/.analyticsstate gates re-execution to roughly once per ~20000s, and env vars DISABLETELEMETRY / ANALYTICSOPTOUT / DONOTTRACK provide a cover-story opt-out. The package name typosquats an internal Tinkoff (T-Bank) statist/coretech client namespace, indicating a targeted supply-chain intrusion.

Source: ghsa-malware (314133b8e399ddf0e821fcdb577db6b3b397232f27dc36f5fd949fbb1ed65031)

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": [
        {
            "source": "amazon-inspector",
            "modified_time": "2026-08-05T09:03:04Z",
            "sha256": "c9d1b853fe0164696ce54aa2550929d727c9ea06d42925934efacf57aeae3ff7",
            "id": "IN-MAL-2026-014523",
            "versions": [
                "20.1.2"
            ],
            "import_time": "2026-08-05T09:28:21.904136117Z"
        },
        {
            "import_time": "2026-08-06T00:58:53.268076858Z",
            "modified_time": "2026-08-05T15:02:34Z",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "id": "GHSA-3frj-gg7c-mc4m",
            "sha256": "314133b8e399ddf0e821fcdb577db6b3b397232f27dc36f5fd949fbb1ed65031",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / tinkoff-statist-browser-typed-client-coretech.statist.mobile.ci

Package

Name
tinkoff-statist-browser-typed-client-coretech.statist.mobile.ci
View open source insights on deps.dev
Purl
pkg:npm/tinkoff-statist-browser-typed-client-coretech.statist.mobile.ci

Affected ranges

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

Affected versions

20.*
20.1.2

Database specific

cwes 
[
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    },
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-ZOaR0l1otu5HWDYO/kKSACNAlhUNyPZPOZTyf7JPOs6n6Z0AxHhFrTzB3xJC6NjSqgCPnL5MkoD6Iq5pHs2j9Q==",
                "sha1": "056da15c0f46bd8f223120664bd2aa111f083a65"
            },
            "filename": "tinkoff-statist-browser-typed-client-coretech.statist.mobile.ci-20.1.2.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "_loader.js",
            "sha256": "3fde535890c2c07550b300d956d925e5c7819260a712e719f355e89a621ae306",
            "tlsh": "89a1b79a126931184bb0e7e4c717441af65bf69333808685fb9ca5941f76228c3b2efc"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tinkoff-statist-browser-typed-client-coretech.statist.mobile.ci/MAL-2026-12256.json"