Malicious code in @brick-v2/tour (npm)

{
  "id": "e8e92c7cb2db6bd181e6ed0de280cf6a45b3ce4f06431cb47da93b9ba87014bc",
  "url": "https://osv.dev/vulnerability/MAL-2026-17719",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Malicious code in @brick-v2/tour (npm)",
    "summary": "@brick-v2/tour is a dependency confusion package published to npm on 2026-10-09 by the account s4yhii__, targeting the internal @galicia-toolkit-* / @brick-v2 package namespaces with inflated versions (e.g. 999.0.x). Early versions resolve ..dc.oob.s4yhii.com via DNS to beacon the victim's hostname. Later versions run `node index.js` from a preinstall hook, which loads a bundled native addon (prebuilds/-/metrics.node, Linux and Windows builds). The addon forks a detached process that collects hostname, username, OS/arch, cwd and the full values of CI/cloud secrets from environment variables (NPM_TOKEN, NODE_AUTH_TOKEN, GITHUB_TOKEN, ACTIONS_RUNTIME_TOKEN, ACTIONS_ID_TOKEN_REQUEST_TOKEN, AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_SESSION_TOKEN, SYSTEM_ACCESSTOKEN, AZURE_DEVOPS_EXT_PAT and others) and sends them as JSON via HTTP POST /native to oob.s4yhii.com:9999. --- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (aabec40c085d56f59b4ca696eefe600f450a03284df0d77f562d861fed091bee) The package presents itself as an Angular-style module exposing forRoot/createLogger stubs and a version field, but these exports are no-ops. The real behavior is in a bundled prebuilt native addon at prebuilds/linux-x64/metrics.node and prebuilds/win32-x64/metrics.node. package.json declares `\"preinstall\": \"node index.js || true\"`, and index.js loads the platform-specific metrics.node via `require(path.join(__dirname,'prebuilds', os.platform()+'-'+os.arch(),'me",
    "evidence": "osv:MAL-2026-17719",
    "products": [
      {
        "name": {
          "value": "@brick-v2/tour",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "999.0.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "999.0.3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "999.0.2",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "MAL-2026-17719",
      "aliases": [
        "MAL-2026-17719"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "@brick-v2/tour",
            "purl": "pkg:npm/%40brick-v2/tour",
            "ecosystem": "npm"
          },
          "versions": [
            "999.0.1",
            "999.0.3",
            "999.0.2"
          ],
          "database_specific": {
            "cwes": [
              {
                "name": "Embedded Malicious Code",
                "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",
                "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."
              }
            ],
            "source": "https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@brick-v2/tour/MAL-2026-17719.json",
            "indicators": {
              "evidence_files": [
                {
                  "path": "prebuilds/linux-x64/metrics.node",
                  "tlsh": "cf72775bb361ce3bc4dc4334055b5a70b1b29870e77353231b11a1bb3d927885ebae9a",
                  "sha256": "3f8833d49735dfdfe9bdef504bbb53ff069cb48a3953d9af08659d1c5560cf26"
                },
                {
                  "path": "package.json",
                  "tlsh": "70c080345531241304c59be45c63490606d70c7f4005b0040b57542443dd63728fd33d",
                  "sha256": "81743667bd97d73aeeb0359560acd5317625c412199771ecc65ebad6519c37ab"
                }
              ],
              "package_integrity": [
                {
                  "hashes": {
                    "sha1": "04a443031d1ae1262211dd016e28c025b01da590",
                    "sha512_sri": "sha512-x71YWX2LxfMIoj4MBVOfQ9GVtyNfEtzDscElWU1w0+agY7ixowgbzR793Q8lWBet8OIUiENGRrCuf+7Zhaa1ag=="
                  },
                  "filename": "tour-999.0.1.tgz"
                }
              ]
            }
          }
        }
      ],
      "modified": "2026-10-12T05:30:05.954920370Z",
      "provider": "osv",
      "references": [
        "https://www.npmjs.com/package/@brick-v2/tour/v/999.0.1",
        "https://www.npmjs.com/package/@brick-v2/tour/v/999.0.3",
        "https://www.npmjs.com/package/@brick-v2/tour/v/999.0.2",
        "https://www.npmjs.com/package/@brick-v2/tour"
      ],
      "provider_metadata": {
        "iocs": {
          "urls": [
            "http://oob.s4yhii.com:9999/native"
          ],
          "files": [
            {
              "note": "Loader: DNS hostname beacon to *.dc.oob.s4yhii.com, or loads the native exfiltration addon (run via preinstall).",
              "paths": [
                "index.js"
              ],
              "source": "PACKAGE_ARCHIVE"
            },
            {
              "note": "Native addon that exfiltrates host info and CI/cloud secret env vars to oob.s4yhii.com:9999.",
              "paths": [
                "prebuilds/linux-x64/metrics.node",
                "prebuilds/win32-x64/metrics.node"
              ],
              "source": "PACKAGE_ARCHIVE"
            }
          ],
          "domains": [
            "oob.s4yhii.com"
          ]
        },
        "malicious-packages-origins": [
          {
            "id": "IN-MAL-2026-021311",
            "sha256": "780830761df5ae1144c409b83bf8bf645927b5ea3dc19173e24c94025c00660b",
            "source": "amazon-inspector",
            "versions": [
              "999.0.1"
            ],
            "import_time": "2026-10-09T13:46:18.983865466Z",
            "modified_time": "2026-10-09T13:39:20Z"
          },
          {
            "id": "IN-MAL-2026-021288",
            "sha256": "aabec40c085d56f59b4ca696eefe600f450a03284df0d77f562d861fed091bee",
            "source": "amazon-inspector",
            "versions": [
              "999.0.3"
            ],
            "import_time": "2026-10-09T13:46:17.100944565Z",
            "modified_time": "2026-10-09T13:35:50Z"
          },
          {
            "id": "IN-MAL-2026-021294",
            "sha256": "f0509f4c0900d40265940d62fa6122c69940a8d101ddb73ed572ea8b1ef6b150",
            "source": "amazon-inspector",
            "versions": [
              "999.0.2"
            ],
            "import_time": "2026-10-09T13:46:17.591352095Z",
            "modified_time": "2026-10-09T13:36:46Z"
          }
        ]
      }
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 298637,
  "published_at": "2026-10-09T00:00:00+00:00"
}