mal-2026-12287
Vulnerability from ossf_malicious_packages
Published
2026-08-05 09:14
Modified
2026-08-25 17:27
Summary
Malicious code in twork-data-services-aggregator-company-sme-main-timeline-loader-with-customers (npm)
Details

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

Source: amazon-inspector (401d167bfbb3ec350a033f908aef6678495563e92c6b090d0eaab85bd1c2b7ba)

On require(), index.js loads _bridge.js which assembles obfuscated Cloudflare Workers hostnames from split string literals (oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf99-9b3.workers.dev) and downloads a platform-specific opaque binary via https.get. If HTTPS fails, a DNS-TXT covert-channel fallback queries c. for a chunk count then . TXT records under tin.dl.well1.site, tina.dl.well1.site, ldr.dl.well1.site, and win.dl.well1.site, base64-decoding the concatenated chunks. The bytes are written to a hidden path in /tmp or %TEMP%, chmodded 0755, and executed detached via spawn("/bin/sh", ["-c", fp+" &"]) or spawn("cmd",...). Cover strings such as "analytics_state" and "dotnet_diag" mask the behavior. The hosts are unrelated to any declared publisher, the fetched content is opaque and unverified, and execution fires automatically when any consumer imports the package.

Source: ghsa-malware (29a15d879bf142dbee845996b4fa6a6a813683a3f4482f4539f03d95c7a39ec0)

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.

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

{
  "affected": [
    {
      "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": "_bridge.js",
              "sha256": "8a021c27cc00d1ffcd0ba39bb74257e19f1c3d0ffb3729023b8ea3dc39204b8e",
              "tlsh": "64a1a79a166a30194bb097e48b174416f65bf6533780c2d4fb9c75885fb622483b1efc"
            }
          ],
          "package_integrity": [
            {
              "filename": "twork-data-services-aggregator-company-sme-main-timeline-loader-with-customers-20.3.8.tgz",
              "hashes": {
                "sha1": "3cedeae130df0e7087cce366317ea923f0f6f3f4",
                "sha512_sri": "sha512-PM2Br0dWcNczJ6+u69FWMcgady5pLt/yuxGLKbo8FyAY8LBbrU+hsB2FgOWMdY1elXV56mzK+HU/2NS4oWtTxg=="
              }
            }
          ]
        }
      },
      "package": {
        "ecosystem": "npm",
        "name": "twork-data-services-aggregator-company-sme-main-timeline-loader-with-customers"
      },
      "versions": [
        "20.3.8"
      ]
    }
  ],
  "aliases": [
    "GHSA-cj3v-xccc-76vq"
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "IN-MAL-2026-014606",
        "import_time": "2026-08-05T09:28:29.849145987Z",
        "modified_time": "2026-08-05T09:14:49Z",
        "sha256": "401d167bfbb3ec350a033f908aef6678495563e92c6b090d0eaab85bd1c2b7ba",
        "source": "amazon-inspector",
        "versions": [
          "20.3.8"
        ]
      },
      {
        "id": "GHSA-cj3v-xccc-76vq",
        "import_time": "2026-08-25T17:25:28.252701373Z",
        "modified_time": "2026-08-25T16:31:51Z",
        "sha256": "29a15d879bf142dbee845996b4fa6a6a813683a3f4482f4539f03d95c7a39ec0",
        "source": "ghsa-malware",
        "versions": [
          "20.3.8"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (401d167bfbb3ec350a033f908aef6678495563e92c6b090d0eaab85bd1c2b7ba)\nOn require(), index.js loads _bridge.js which assembles obfuscated Cloudflare Workers hostnames from split string literals (oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf99-9b3.workers.dev) and downloads a platform-specific opaque binary via https.get. If HTTPS fails, a DNS-TXT covert-channel fallback queries c.\u003cdomain\u003e for a chunk count then \u003ci\u003e.\u003cdomain\u003e TXT records under tin.dl.well1.site, tina.dl.well1.site, ldr.dl.well1.site, and win.dl.well1.site, base64-decoding the concatenated chunks. The bytes are written to a hidden path in /tmp or %TEMP%, chmodded 0755, and executed detached via spawn(\"/bin/sh\", [\"-c\", fp+\" \u0026\"]) or spawn(\"cmd\",...). Cover strings such as \"analytics_state\" and \"dotnet_diag\" mask the behavior. The hosts are unrelated to any declared publisher, the fetched content is opaque and unverified, and execution fires automatically when any consumer imports the package.\n\n## Source: ghsa-malware (29a15d879bf142dbee845996b4fa6a6a813683a3f4482f4539f03d95c7a39ec0)\nAny 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.\n",
  "id": "MAL-2026-12287",
  "modified": "2026-08-25T17:27:31.695165987Z",
  "published": "2026-08-05T09:14:49Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/twork-data-services-aggregator-company-sme-main-timeline-loader-with-customers/v/20.3.8"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-cj3v-xccc-76vq"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in twork-data-services-aggregator-company-sme-main-timeline-loader-with-customers (npm)"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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