Which versions of stream-chain-xor are malicious?

The following npm versions of stream-chain-xor are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate stream-chain-xor if I installed it?

Remove stream-chain-xor 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 stream-chain-xor — how do I know if it already compromised me?

If stream-chain-xor 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 stream-chain-xor part of a known attack campaign?

Yes — stream-chain-xor is associated with the RLMA-2025-06490 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 stream-chain-xor across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for stream-chain-xor (version 1.0.0).

Malicious package

stream-chain-xornpm

Advisory published Dec 23, 2025Updated Jan 2, 2026

stream-chain-xor is a confirmed malicious npm package (MAL-2025-192864) that executes malicious code on install (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in stream-chain-xor (npm)

MAL-2025-192864

Immediate action

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

npm uninstall stream-chain-xor

What this malware does

The package stream-chain-xor was found to contain malicious code.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

32d56d5412f221a8d3745f12d3008f196c529eed1d615e32485e14fb9fa13b11

be18a835c94965458ba487a88b339ad55c26ca1f3e4785daf6dabb6d60dc3903

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for stream-chain-xor (version 1.0.0).
If you installed it — respond
Remove stream-chain-xor 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 stream-chain-xor 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. stream-chain-xor on npm has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-06490

Credits

Amazon Inspector · finder
ReversingLabs · finder

Detect & block this

O3 blocks stream-chain-xor-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

All malware advisories How O3 detects malware Vulnerability database