mal-2026-13654
Vulnerability from ossf_malicious_packages
Published
2026-08-08 00:44
Modified
2026-08-08 00:44
Summary
Malicious code in sme-rko-finance-front-payments-allowed-tariffs-filter (npm)
Details

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

Source: amazon-inspector (6d957fec8c08e1dcadbcd6e4b6933a1c1482356e79adbfe1f6ceb6d64a68855f)

On require() of the package, bootstrap.js selects a platform-specific path from a hardcoded map, downloads an opaque binary from one of three Cloudflare Workers hosts whose names are reassembled at runtime from string-array fragments (oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev), with DNS TXT-record fallback to sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The downloaded bytes are written to /tmp or %TEMP% under cover-story filenames (.cache, dotnet_diag_.exe), chmod'd to 0755, and spawned detached via /bin/sh -c or cmd.exe /c start. lib/telemetry.js — reached via index.js re-exporting it as the package main — contains a duplicate fetch/base64-decode/chmod/spawn chain that obfuscates API access by string-concatenating require("child_"+"process") and fs["chmod"+"Sync"], branded as an "Analytics SDK". There is no version pin, no hash or signature check, and no configuration surface for the destination. The package name suggests a finance-tariff-filter UI component; the actual behavior on install/import is unrelated full-host code execution.

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": "_bootstrap.js",
              "sha256": "d49eefe6e7afe85683f48d8e6635eec8ebed5b75340f2b865dad8da35df0eb03",
              "tlsh": "7fa1935a16fe701806a2e0d4851f581ab19bf99332c5d9d4fb4c66849faa234c3b39fc"
            },
            {
              "path": "lib/telemetry.js",
              "sha256": "bafc52724dd8935b8fdd358ad681cac817ae17f787c7bfd32762d30b944557ec",
              "tlsh": "eb73304966fb10214263b0685fbb40437635c4072a4aed5dba9c43ec9f8db3896f1fb9"
            }
          ],
          "package_integrity": [
            {
              "filename": "sme-rko-finance-front-payments-allowed-tariffs-filter-35.8.1.tgz",
              "hashes": {
                "sha1": "c99508c83bad9cbf04e22b78bb1cedadb909fde2",
                "sha512_sri": "sha512-TTLkHxA96qIUU/gKxl55kTzhGqVToejFlEzmFf8fEOUacD0/CzHJ7M05AWn+Tex4oxGwEdaCAv/TN1sQ+b+eMA=="
              }
            }
          ]
        }
      },
      "package": {
        "ecosystem": "npm",
        "name": "sme-rko-finance-front-payments-allowed-tariffs-filter"
      },
      "versions": [
        "35.8.1"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "IN-MAL-2026-017147",
        "import_time": "2026-08-08T00:53:06.865845466Z",
        "modified_time": "2026-08-08T00:44:39Z",
        "sha256": "6d957fec8c08e1dcadbcd6e4b6933a1c1482356e79adbfe1f6ceb6d64a68855f",
        "source": "amazon-inspector",
        "versions": [
          "35.8.1"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (6d957fec8c08e1dcadbcd6e4b6933a1c1482356e79adbfe1f6ceb6d64a68855f)\nOn require() of the package, _bootstrap.js selects a platform-specific path from a hardcoded map, downloads an opaque binary from one of three Cloudflare Workers hosts whose names are reassembled at runtime from string-array fragments (oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev), with DNS TXT-record fallback to sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The downloaded bytes are written to /tmp or %TEMP% under cover-story filenames (.cache_\u003chex\u003e, dotnet_diag_\u003chex\u003e.exe), chmod\u0027d to 0755, and spawned detached via /bin/sh -c or cmd.exe /c start. lib/telemetry.js \u2014 reached via index.js re-exporting it as the package main \u2014 contains a duplicate fetch/base64-decode/chmod/spawn chain that obfuscates API access by string-concatenating require(\"child_\"+\"process\") and fs[\"chmod\"+\"Sync\"], branded as an \"Analytics SDK\". There is no version pin, no hash or signature check, and no configuration surface for the destination. The package name suggests a finance-tariff-filter UI component; the actual behavior on install/import is unrelated full-host code execution.\n",
  "id": "MAL-2026-13654",
  "modified": "2026-08-08T00:44:39Z",
  "published": "2026-08-08T00:44:39Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/sme-rko-finance-front-payments-allowed-tariffs-filter/v/35.8.1"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in sme-rko-finance-front-payments-allowed-tariffs-filter (npm)"
}



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