Which versions of chatcc-agent are malicious?

The following npm versions of chatcc-agent are flagged malicious: 0.8.24. Treat any of these as compromised.

How do I remediate chatcc-agent if I installed it?

Remove chatcc-agent from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

I already installed chatcc-agent — how do I know if it already compromised me?

If chatcc-agent was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Is chatcc-agent part of a known attack campaign?

Yes — chatcc-agent is associated with the IN-MAL-2026-015779 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find chatcc-agent across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for chatcc-agent (version 0.8.24).

Malicious package

chatcc-agentnpm

Advisory published Aug 5, 2026Updated Aug 5, 2026

chatcc-agent is a confirmed malicious npm package (MAL-2026-13259) that executes malicious code on install (malicious version 0.8.24). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in chatcc-agent (npm)

MAL-2026-13259

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall chatcc-agent

What this malware does

chatcc-agent runs a daemon that connects to Tencent Cloud IM as a WebSocket client and treats inbound peer messages of type 'terminal_command', 'terminal_input', and 'terminal_pty_*' as instructions to spawn or write to a local shell / PTY on the installer's machine. In src/cclink-studio-remote.js and related handlers, _handleAdvancedCommand calls pty.spawn(shell, ['-lc', command],...) with the command string supplied by the remote IM peer, and handleInput forwards peer-supplied bytes into the active process's stdin. The result is a network-reachable, remote-controlled command-execution channel into the host that installed and runs the agent. Access is gated by JWT / paired-client authentication, but the channel, its bindings to a login shell, and the ability to stream arbitrary stdin exist by design and constitute a remote-shell surface regardless of how the package is described. Separately, the npm install script only performs a local native build (chmod of the shipped node-pty spawn-helper and compilation of a shipped C source with cc) and does not fetch or execute remote content.

Malicious versions

1 flagged

0.8.24

Indicators of compromise (SHA-256)

8a69e686f3f793120840abd296a10a4b1c8d734797607e7dce82a82e90cf7cf0

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for chatcc-agent (version 0.8.24).
If you installed it — respond
Remove chatcc-agent from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If chatcc-agent was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. chatcc-agent on npm has been identified as a malicious package (version 0.8.24 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015779

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks chatcc-agent-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Malware detection Runtime egress monitoring

Explore

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