MAL-2026-12252

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tinkoff-pwa-confac-types/MAL-2026-12252.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12252
Aliases
  • GHSA-6rh3-gcq9-vmhv
Published
2026-08-05T09:03:45Z
Modified
2026-08-26T01:18:21Z
Summary
Malicious code in tinkoff-pwa-confac-types (npm)
Details

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

Source: amazon-inspector (fdebc9c281924002edabc3f53a796ac4a5a5e78d64fbb70974b2c3597de7f84d)

The package advertises itself as a types interface but its main entry silently requires _adapter.js inside a try/catch. On require, adapter.js assembles obfuscated Cloudflare Workers hostnames by array-join (oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev) with a DNS-TXT chunked base64 fallback across tin.dl.well1.site, tina.dl.well1.site, ldr.dl.well1.site, and win.dl.well1.site, downloads a platform-specific binary, writes it to /var/tmp (hidden dot-file name) or %TEMP% (disguised as dotnet_diag*.exe), chmods it 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. child_process is required lazily inside the activation path and the dropper honors DISABLE_TELEMETRY/ANALYTICS_OPT_OUT/DO_NOT_TRACK as a cover story. No native source ships in the tarball and the behavior is unrelated to any 'types' functionality. An unreferenced 81 KB lib/telemetry.js is present as additional staging.

Source: ghsa-malware (4afd9b0f4251e8f1984300da1467018532f55ae853ac6c5322720329cfefea2f)

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": [
        {
            "id": "IN-MAL-2026-014528",
            "import_time": "2026-08-05T09:28:22.36592508Z",
            "modified_time": "2026-08-05T09:03:45Z",
            "sha256": "fdebc9c281924002edabc3f53a796ac4a5a5e78d64fbb70974b2c3597de7f84d",
            "source": "amazon-inspector",
            "versions": [
                "20.7.7"
            ]
        },
        {
            "id": "GHSA-6rh3-gcq9-vmhv",
            "import_time": "2026-08-25T16:26:05.011911676Z",
            "modified_time": "2026-08-25T15:55:15Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "4afd9b0f4251e8f1984300da1467018532f55ae853ac6c5322720329cfefea2f",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / tinkoff-pwa-confac-types

Package

Name
tinkoff-pwa-confac-types
View open source insights on deps.dev
Purl
pkg:npm/tinkoff-pwa-confac-types

Affected ranges

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

Affected versions

20.*
20.7.7

Database specific

cwes 
[
    {
        "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.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "_adapter.js",
            "sha256": "3eed0559d23827018b0df4b55ccdfd64256dd075b4cbc16b3b503bfacf4a4d79",
            "tlsh": "e9a1a99a12a5701c4bb0ebf4c61b5815f65af26337818294f79c65885f7352483b2efc"
        },
        {
            "path": "index.js",
            "sha256": "252686aafd6d457c3170b80e2ee80f602202f4fba89eb54388f8822170786adc",
            "tlsh": "caf081cb35deb4228370e2e3ce634051f6318d340b5781547acc40ee0fa441442d8fb9"
        }
    ],
    "package_integrity": [
        {
            "filename": "tinkoff-pwa-confac-types-20.7.7.tgz",
            "hashes": {
                "sha1": "27cfd9e7f4c740cd41a2c16d77033193adff2b3d",
                "sha512_sri": "sha512-YsJZ0AlN8Rm/K8GQaT7Qc0LIhnk1LOowd51RTpPrOuSJOjq0eCDfRwrzvtgUuHuqqlQC+91s5Z856iohoW7qvQ=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/tinkoff-pwa-confac-types/MAL-2026-12252.json"