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

{
  "id": "e19fd49442be82dde0304f87ad345787704fea418b0d654596afb535af848728",
  "url": "https://osv.dev/vulnerability/MAL-2026-17714",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Malicious code in @brick-v2/brand (npm)",
    "summary": "@brick-v2/brand 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 (a194395a620ef40055a22d7beccbab1e1ca0c662afe83b9ee2fb23d07ebaedc5) package.json declares a preinstall hook `node index.js || true` that loads a prebuilt native addon at prebuilds/-/metrics.node. The addon reads credential-grade environment variables (AWS_SECRET_ACCESS_KEY and other AWS_*, GITHUB_TOKEN, NPM_TOKEN, NODE_AUTH_TOKEN, SYSTEM_ACCESSTOKEN, ACTIONS_RUNTIME_TOKEN, ACTIONS_ID_TOKEN_REQUEST_TOKEN, AZURE_DEVOPS_EXT_PAT) and host identifiers (hostname via gethostname/GetComputerNameA, username via getpwuid/GetUserNameA, un",
    "evidence": "osv:MAL-2026-17714",
    "products": [
      {
        "name": {
          "value": "@brick-v2/brand",
          "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-2026-17714",
      "aliases": [
        "MAL-2026-17714"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "@brick-v2/brand",
            "purl": "pkg:npm/%40brick-v2/brand",
            "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/brand/MAL-2026-17714.json",
            "indicators": {
              "evidence_files": [
                {
                  "path": "prebuilds/linux-x64/metrics.node",
                  "tlsh": "cf72775bb361ce3bc4dc4334055b5a70b1b29870e77353231b11a1bb3d927885ebae9a",
                  "sha256": "3f8833d49735dfdfe9bdef504bbb53ff069cb48a3953d9af08659d1c5560cf26"
                },
                {
                  "path": "package.json",
                  "tlsh": "58c080705531142314c6dbe58ce249074adb0c6f004574041757552441fd73314ff33c",
                  "sha256": "1a17d809f782d801d813f4a551fe60866bb8ac09855e8df71a7dc8b38ac3b19d"
                }
              ],
              "package_integrity": [
                {
                  "hashes": {
                    "sha1": "2a94637ece2a2f7905fea6375b9cb8ccb8c3cd20",
                    "sha512_sri": "sha512-s/ZulG7hGTvmqtUG7BoFvovsjk6EykZAGUsYgqz6Im+yuEeMUxPBdzlRJWZtFilpWKGXl9G9F3xhuFjMMGXHxw=="
                  },
                  "filename": "brand-999.0.1.tgz"
                }
              ]
            }
          }
        }
      ],
      "modified": "2026-10-12T05:30:07.016876813Z",
      "provider": "osv",
      "references": [
        "https://www.npmjs.com/package/@brick-v2/brand/v/999.0.1",
        "https://www.npmjs.com/package/@brick-v2/brand/v/999.0.3",
        "https://www.npmjs.com/package/@brick-v2/brand/v/999.0.2",
        "https://www.npmjs.com/package/@brick-v2/brand"
      ],
      "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-2026-021313",
            "sha256": "197d8de60092ac86ecda23eedf003121f46b8a7c34c5f60eeabd6c23134e2983",
            "source": "amazon-inspector",
            "versions": [
              "999.0.1"
            ],
            "import_time": "2026-10-09T13:46:19.147946933Z",
            "modified_time": "2026-10-09T13:39:36Z"
          },
          {
            "id": "IN-MAL-2026-021284",
            "sha256": "a194395a620ef40055a22d7beccbab1e1ca0c662afe83b9ee2fb23d07ebaedc5",
            "source": "amazon-inspector",
            "versions": [
              "999.0.3"
            ],
            "import_time": "2026-10-09T13:46:16.693711029Z",
            "modified_time": "2026-10-09T13:35:10Z"
          },
          {
            "id": "IN-MAL-2026-021300",
            "sha256": "f7cfeebad59fc63be0a47be28ded37bfe722bbb39be81bb9d0fe9ba60f9db644",
            "source": "amazon-inspector",
            "versions": [
              "999.0.2"
            ],
            "import_time": "2026-10-09T13:46:18.147710836Z",
            "modified_time": "2026-10-09T13:37:42Z"
          }
        ]
      }
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 298645,
  "published_at": "2026-10-09T00:00:00+00:00"
}