MAL-2026-13585
Vulnerability from ossf_malicious_packages
Published
2026-08-07 12:34
Modified
2026-08-07 12:34
Summary
Malicious code in dolyame-ui-inputtag (npm)
Details

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

Source: amazon-inspector (b5f7fb3babc69bc0dbb80ecfe5c523d9aee1bbf2476331424ea57290985d0bf8)

On require of the package's main entry, index.js loads init.js which downloads a platform-specific executable from hardcoded oob-worker..workers.dev endpoints, with a DNS-TXT chunked fallback over .dl.wel1.ru sub-domains (sdk/ext/pkg/net.dl.wel1.ru). The fetched binary is written to /tmp or %TEMP% under disguised names (.cache, dotnet_diag_.exe), chmod 755'd, and spawned detached via /bin/sh -c or cmd.exe. Endpoint hostnames and API names are reconstructed at runtime through array-join and string concatenation (['oob-worker.','cf103-070.worker','s.de','v'].join(''), require('child_'+'process'), fs['chmod'+'Sync']) to evade static scanners. A second dropper path with the same shape is present in lib/telemetry.js, loaded via the package main. A time-based lock file rate-limits execution to roughly every 6 hours, and opt-out environment checks are consulted before firing. The package name mimics the Dolyame payment UI namespace; the shipped code is not a UI input-tag component but a fetch-and-execute delivery mechanism for attacker-controlled binaries.

CWE
  • CWE-506 - The product contains code that appears to be malicious in nature.
Credits

{
  "affected": [
    {
      "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": "_init.js",
              "sha256": "798c56493e43c7763788a405aec877ef0d509bbccf46f149fba2b36aff0dba61",
              "tlsh": "50a1a55a1afa70180793e4d8855f4416719af69333c4e9d8fb4c76845f9b238c3b29ec"
            },
            {
              "path": "lib/telemetry.js",
              "sha256": "d5ea368c227a77e5b76697595cd18853582c7ecf8303f18f64541680beb87184",
              "tlsh": "a0733f4966fb10214263b0685fab40437635c4072a4aed5dba9c43ec9f8db3896f1fb9"
            }
          ],
          "package_integrity": [
            {
              "filename": "dolyame-ui-inputtag-35.8.1.tgz",
              "hashes": {
                "sha1": "008d7c31a35abfb9fafefc516ae3fe1b154108c3",
                "sha512_sri": "sha512-OdZgwl6gg9PEUQOa5w6n0VSKjC3yMQ29k85tQBApNI+LstvLqemOPUms6qs5lv9Nq9ZGV/2+fDiLJoY7bnj2LQ=="
              }
            }
          ]
        }
      },
      "package": {
        "ecosystem": "npm",
        "name": "dolyame-ui-inputtag"
      },
      "versions": [
        "35.8.1"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "IN-MAL-2026-017033",
        "import_time": "2026-08-07T12:51:22.985461944Z",
        "modified_time": "2026-08-07T12:34:08Z",
        "sha256": "b5f7fb3babc69bc0dbb80ecfe5c523d9aee1bbf2476331424ea57290985d0bf8",
        "source": "amazon-inspector",
        "versions": [
          "35.8.1"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (b5f7fb3babc69bc0dbb80ecfe5c523d9aee1bbf2476331424ea57290985d0bf8)\nOn require of the package\u0027s main entry, index.js loads _init.js which downloads a platform-specific executable from hardcoded oob-worker.*.workers.dev endpoints, with a DNS-TXT chunked fallback over *.dl.wel1.ru sub-domains (sdk/ext/pkg/net.dl.wel1.ru). The fetched binary is written to /tmp or %TEMP% under disguised names (.cache_\u003chex\u003e, dotnet_diag_\u003chex\u003e.exe), chmod 755\u0027d, and spawned detached via /bin/sh -c or cmd.exe. Endpoint hostnames and API names are reconstructed at runtime through array-join and string concatenation ([\u0027oob-worker.\u0027,\u0027cf103-070.worker\u0027,\u0027s.de\u0027,\u0027v\u0027].join(\u0027\u0027), require(\u0027child_\u0027+\u0027process\u0027), fs[\u0027chmod\u0027+\u0027Sync\u0027]) to evade static scanners. A second dropper path with the same shape is present in lib/telemetry.js, loaded via the package main. A time-based lock file rate-limits execution to roughly every 6 hours, and opt-out environment checks are consulted before firing. The package name mimics the Dolyame payment UI namespace; the shipped code is not a UI input-tag component but a fetch-and-execute delivery mechanism for attacker-controlled binaries.\n",
  "id": "MAL-2026-13585",
  "modified": "2026-08-07T12:34:08Z",
  "published": "2026-08-07T12:34:08Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/dolyame-ui-inputtag/v/35.8.1"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in dolyame-ui-inputtag (npm)"
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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