mal-2026-13669
Vulnerability from ossf_malicious_packages
Published
2026-08-08 17:27
Modified
2026-08-10 11:53
Summary
Malicious code in specials-resources-server (npm)
Details

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

Source: amazon-inspector (07bd295669162565e4b75a82a674ae4ee555bd6e5bd1fab67de3093de939ea30)

specials-resources-server@35.8.1 is a staged remote-code-execution dropper disguised as an 'Analytics SDK'. Both the package main (lib/telemetry.js) and shim.js execute the same payload on require(): they select a platform-specific path, fetch an opaque binary from a rotating list of Cloudflare Workers subdomains (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf103-070.workers.dev) with a DNS TXT fallback under sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru, base64-decode chunks, write to /var/tmp/.cache or %TEMP%/dotnet_diag_.exe, chmod 0755, and detached-spawn via /bin/sh -c or cmd /c start. The destination hosts are anonymous Cloudflare Workers subdomains, not the package publisher; there is no hash or signature verification; the on-disk names impersonate cache and dotnet-diagnostic files. Endpoint hostnames and privileged API names (child_process, chmodSync) are reconstructed by string-concatenation and array-join to evade literal-string scanners, and a /tmp/.analytics_state TTL marker gates re-execution. Any consumer that imports the package triggers the dropper.

Source: ghsa-malware (cbb3887b9c3ca309351d2a82525382a65eecc014f7e5909f4e2d18bd8bd38ab0)

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": "_shim.js",
              "sha256": "46efe7072a8d5172f9fde420b59c947136d9e435bb03dfb536a184e7a116c97a",
              "tlsh": "9ea1a65916ff701806a3e2d4851f581a729ffa5333c4d8d8fb4c66984f9a16883f29ec"
            },
            {
              "path": "lib/telemetry.js",
              "sha256": "a340ef17be816498f0bdf5853f2b836093d079e1ec080c296431a9c855176af6",
              "tlsh": "a3733f4966fb10214263b0685fbb40437635c4072a4aed5dba9c43ec9f8db3896f1fb9"
            }
          ]
        }
      },
      "package": {
        "ecosystem": "npm",
        "name": "specials-resources-server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": [
        "35.8.1"
      ]
    }
  ],
  "aliases": [
    "GHSA-9wh2-7j4m-r43r"
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "GHSA-9wh2-7j4m-r43r",
        "import_time": "2026-08-09T23:21:54.497127Z",
        "modified_time": "2026-08-08T17:27:55Z",
        "ranges": [
          {
            "events": [
              {
                "introduced": "0"
              }
            ],
            "type": "SEMVER"
          }
        ],
        "sha256": "cbb3887b9c3ca309351d2a82525382a65eecc014f7e5909f4e2d18bd8bd38ab0",
        "source": "ghsa-malware"
      },
      {
        "id": "IN-MAL-2026-017207",
        "import_time": "2026-08-10T11:51:54.861878674Z",
        "modified_time": "2026-08-10T11:50:21Z",
        "sha256": "07bd295669162565e4b75a82a674ae4ee555bd6e5bd1fab67de3093de939ea30",
        "source": "amazon-inspector",
        "versions": [
          "35.8.1"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (07bd295669162565e4b75a82a674ae4ee555bd6e5bd1fab67de3093de939ea30)\nspecials-resources-server@35.8.1 is a staged remote-code-execution dropper disguised as an \u0027Analytics SDK\u0027. Both the package main (lib/telemetry.js) and _shim.js execute the same payload on require(): they select a platform-specific path, fetch an opaque binary from a rotating list of Cloudflare Workers subdomains (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf103-070.workers.dev) with a DNS TXT fallback under sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru, base64-decode chunks, write to /var/tmp/.cache_\u003chex\u003e or %TEMP%/dotnet_diag_\u003chex\u003e.exe, chmod 0755, and detached-spawn via /bin/sh -c or cmd /c start. The destination hosts are anonymous Cloudflare Workers subdomains, not the package publisher; there is no hash or signature verification; the on-disk names impersonate cache and dotnet-diagnostic files. Endpoint hostnames and privileged API names (child_process, chmodSync) are reconstructed by string-concatenation and array-join to evade literal-string scanners, and a /tmp/.analytics_state TTL marker gates re-execution. Any consumer that imports the package triggers the dropper.\n\n## Source: ghsa-malware (cbb3887b9c3ca309351d2a82525382a65eecc014f7e5909f4e2d18bd8bd38ab0)\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-2026-13669",
  "modified": "2026-08-10T11:53:50.740498770Z",
  "published": "2026-08-08T17:27:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-9wh2-7j4m-r43r"
    },
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/specials-resources-server/v/35.8.1"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in specials-resources-server (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

Author Source Type Date Other

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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Detection rules are retrieved from Rulezet.

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