MAL-2026-13597

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-scrollblock/MAL-2026-13597.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13597
Published
2026-08-07T12:32:46Z
Modified
2026-08-07T13:20:54Z
Summary
Malicious code in dolyame-ui-scrollblock (npm)
Details

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

Source: amazon-inspector (242ef9ba3c44f135b08ae34b89045c494ab2a94f3642eeb2a6e164e858561cb9)

On require() of the package, index.js loads helpers.js and lib/telemetry.js, which reassemble Cloudflare Workers hostnames from split string fragments (['oob-worker.cf100','-416.work','ers','.de','v'].join('')) and download a platform-specific binary via https.get. The payload is written to /tmp under a hidden dot-file name (or to Windows Temp as dotnet_diag*.exe), chmod'd 0755 via fs['chmod'+'Sync'], and spawned detached with cp.spawn('/bin/sh', ['-c', filePath+' &'], {detached:true}) or the cmd.exe equivalent. A secondary delivery path resolves DNS TXT records under *.dl.wel1.ru (c. for chunk count, N. for each chunk), concatenates the base64 payload, and executes it the same way. Sensitive API names (child_process, chmodSync) and destination hostnames are split-string-obfuscated to evade static analysis. The 'Analytics SDK' framing in lib/telemetry.js duplicates the same fetch-write-chmod-exec chain. Installing and importing the package fetches and runs opaque attacker-controlled native code on the developer's machine with no pinning or signature verification.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-017024",
            "import_time": "2026-08-07T12:51:22.698823589Z",
            "modified_time": "2026-08-07T12:32:46Z",
            "sha256": "242ef9ba3c44f135b08ae34b89045c494ab2a94f3642eeb2a6e164e858561cb9",
            "source": "amazon-inspector",
            "versions": [
                "35.8.1"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / dolyame-ui-scrollblock

Package

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

Affected ranges

Affected versions

35.*
35.8.1

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "_helpers.js",
            "sha256": "87f07d44b04cf04347b917af05d5ef66e7587696b6abc139f45faa5549078a41",
            "tlsh": "eaa1b55916fa30180792e1d8c11f681671aef2537684e8d4fb4ca6985fd722583f36fc"
        },
        {
            "path": "lib/telemetry.js",
            "sha256": "7f190ea4ac1c53044e1a353c2c96d2dd593262b3f1002fb387171c2cdfc8c684",
            "tlsh": "6073304966fb10214263b0685fab40437635c4072a4eed5dba9c43ec9f8db3896f1fb9"
        }
    ],
    "package_integrity": [
        {
            "filename": "dolyame-ui-scrollblock-35.8.1.tgz",
            "hashes": {
                "sha1": "fd7d552cbea493d87e424b7df10e2870586208db",
                "sha512_sri": "sha512-lkiK/ezczdq/Nkr2LPSJKtdZ5B4dY1Q9H65+nq6uAXXuPpWMDetMdovJgih2q9syOmkQAjijpZlyTpzWmeILUQ=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-scrollblock/MAL-2026-13597.json"