MAL-2026-16320

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## Source: amazon-inspector (4ed929a2d8cbd15860eaafb9eb773ad02f9b31f361514b47987eca8dfa1ae695) Package @siriusbeyond/auth@99.0.0 registers both preinstall and postinstall lifecycle scripts that execute callback.js on every `npm install`. callback.js collects installer host identifiers (hostname, username, platform, cwd, homedir, CI/cloud indicators, npm registry) together with a filtered list of environment variable names matching token/secret/key/password/aws/npm/git patterns, and POSTs a Markdown report to https://api.telegram.org/bot<token>/sendMessage using a hardcoded bot token and chat_id 1064260758 embedded in the source. The lifecycle commands are wrapped in `2>/dev/null || true` to suppress errors and hide the beacon from install output. The version number 99.0.0 and private-scope name are the standard dependency-confusion shape targeting the `@siriusbeyond` scope, causing internal builds that reference that scope to resolve to this public package and beacon out. The package's self-description as a 'Dependency Confusion PoC / security research' does not change the runtime behavior: installer-owned data leaves every machine that installs it to an author-controlled Telegram channel.

## Source: ossf-package-analysis (1d6b359a24803199b8b8cbc77aed1c8ceac0706a76db4ec00a9964bf1f8b1e37) The OpenSSF Package Analysis project identified '@siriusbeyond/auth' @ 99.0.0 (npm) as malicious.

It is considered malicious because:

- The package communicates with a domain associated with malicious activity.