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MAL-2026-12313

Dashboard / Malicious Package / MAL-2026-12313

MAL-2026-12313

Published: 5 Aug 2026Last Modified: 6 Aug 2026

Summary: Malicious code in @ccfly/setup-darwin-x64 (npm)

Details: Source: amazon-inspector (409d11825a61bed068425296e83dcc0c87427579f7b5d724ec52e5e87465f2b5) The package ships a prebuilt darwin/x64 Mach-O binary containing a Go agent (module github.com/ccfly/rescue) that, when executed, connects to a hardcoded remote broker at cc.hn / ccfly over WebSocket (ws://ccfly, wss://, https://cc.hn) using github.com/gorilla/websocket, spawns a pseudo-terminal via github.com/creack/pty, and pipes the WebSocket stream into that PTY. Symbols include agent.serve, agent.startPTY, agent.waitAuthorized, agent.wsBase and unixPTY.Read/Write/Resize/Close, giving the remote party interactive shell control of the host. A second stage (setup.downloadCcfly, setup.fetchAndExtract, setup.npmTarballURL, setup.extractFromTarGz, setup.runCcflyInstall, setup.redeemEnrollToken, setup.(*brokerClient).escalateToRescue, with a rodata reference to https://registry.npmjs.org) fetches and executes a further ccfly npm tarball after the broker approves an enrollment token — the additional code executed on the host is chosen by the remote broker, not the installer. The binary also inspects shell RC files and /etc/hosts (setup.scanShellProfilesForProxy, setup.checkProxyResidue, setup.checkHostsResidue, setup.runEnvChecks, setup.envReport) and POSTs an environment report back to the broker (setup.(*brokerClient).post; rodata latest.zshrc, export.ccfly).

Affected packages

Package

Name: @ccfly/setup-darwin-x64

Purl: pkg:npm/%40ccfly/setup-darwin-x64

Affected ranges

Type: N/A

Events:

Introduced- None

Fixed -None

Affected versions

0.1.7

0.1.16

0.1.6

0.1.0

0.1.14

0.1.1

0.1.9

0.1.3

0.1.13

0.1.8

0.1.15