MAL-2026-13512

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-tabsblock/MAL-2026-13512.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13512
Published
2026-08-07T12:13:57Z
Modified
2026-08-07T12:35:17.834243954Z
Summary
Malicious code in dolyame-ui-tabsblock (npm)
Details

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

Source: amazon-inspector (7b1de03bd78472fa85163160c48af5b0ef0dd14fd1b49bc60e66a3ef10bb8ef2)

On require, index.js loads./compat and./lib/telemetry, both of which reconstruct hostnames at runtime from string fragments (e.g. ["oob-worker.c","f102-baf",".wor","kers",".dev"].join("")) and fetch an opaque platform-specific binary from Cloudflare Workers subdomains oob-worker.cf99-9b3.workers.dev, oob-worker.cf102-baf.workers.dev, and oob-worker.cf101-adf.workers.dev. The bytes are written to /tmp or the Windows temp directory under randomized names such as.cacheXX or dotnetdiagXX.exe, made executable via fs"chmod"+"Sync", and launched detached with cp.spawn("/bin/sh", ["-c", filePath+" &"], {detached:true}).unref(). A time-gated flag in /tmp suppresses re-run within roughly six hours. If HTTPS delivery fails, compat.js falls back to dns.resolveTxt against sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru: it reads a counter TXT record at c.<domain>, then batches queries for numbered subdomains, concatenates the TXT contents, and base64-decodes the result into the executable payload. lib/telemetry.js contains a parallel fetch->write->chmod 755->spawn path camouflaged as a Sentry-lookalike "apm.node" SDK. childprocess, chmodSync, and hostname API names are split-string obfuscated to evade static scanners. The package name mimics a Russian BNPL brand while its actual behavior is retrieving and executing attacker-controlled native code on every import.

Database specific 
{
    "malicious-packages-origins": [
        {
            "source": "amazon-inspector",
            "modified_time": "2026-08-07T12:13:57Z",
            "id": "IN-MAL-2026-016893",
            "import_time": "2026-08-07T12:23:26.052463598Z",
            "sha256": "7b1de03bd78472fa85163160c48af5b0ef0dd14fd1b49bc60e66a3ef10bb8ef2",
            "versions": [
                "35.8.1"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / dolyame-ui-tabsblock

Package

Name
dolyame-ui-tabsblock
View open source insights on deps.dev
Purl
pkg:npm/dolyame-ui-tabsblock

Affected ranges

Affected versions

35.*
35.8.1

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "dolyame-ui-tabsblock-35.8.1.tgz",
            "hashes": {
                "sha512_sri": "sha512-MG1fi9HTpEFtWlF/DEMAYlgLRFClJ3R0n9xhWGg9VxBfsXK/iQV2dCEU+iSfQ3AaQPI7VNZbq6JTcSwSxDQAGg==",
                "sha1": "1e08cc7fbd20d578505afddca1d263fa41169557"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "7da1c95a1afa701803a2e1d8842f5416b1afe69332c5d5d4fb4c66984f9717883b39fc",
            "sha256": "b3670687712a51071f4e297bbc9d442f4757726a35c3c468a71608a92aca879c",
            "path": "_compat.js"
        },
        {
            "tlsh": "0b733f4966fb10214263b0685fbb40437635c4072a4aed5dba9c43ec9f8db3896f1fb9",
            "sha256": "ad7bc7409cfc1af69d802a69c30d92034b4c5b7180eabd2ea39dc0bfd3e8a670",
            "path": "lib/telemetry.js"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-tabsblock/MAL-2026-13512.json"
cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]