Which versions of raectjs are malicious?

The following npm versions of raectjs are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate raectjs if I installed it?

Remove raectjs 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 raectjs — how do I know if it already compromised me?

If raectjs 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 raectjs part of a known attack campaign?

Yes — raectjs is associated with the IN-MAL-2026-018255 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 raectjs across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for raectjs (version 1.0.0).

Malicious package

raectjsnpm

raectjs is a confirmed malicious npm package (MAL-2026-14187) 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 raectjs (npm)

MAL-2026-14187

Immediate action

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

npm uninstall raectjs

What this malware does

scripts/postinstall.js runs on npm install and performs two attacker-beneficial actions. First, it POSTs a JSON platform snapshot to the hardcoded bare-IP endpoint http://193.70.34.101:20099/vote, with the host string reconstructed at runtime by joining ['193','70','34','101'] to evade static hostname matching. Second, it XOR-decodes (key 'stf2026') an embedded byte array (ADDON_ENC) into a URL pointing at a GitHub releases/download/.../main.exe under an attacker-controlled account, fetches the payload into %TEMP%\main.exe, and spawns it detached with stdio:'ignore' and windowsHide:true. On WSL/virtualized Linux it XOR-decodes a PowerShell bridge command and script (BRIDGE_LAUNCHER_ENC, BRIDGE_SCRIPT_PRE_ENC, BRIDGE_SCRIPT_POST_ENC) to invoke the same payload on the Windows host. The fetched binary has no pinning, no hash or signature verification, and the package name uses a cover story ('addon', 'TELEMETRY.addon') while shipping no native source consistent with a real addon (index.js exports {}). Package has no legitimate purpose beyond delivering the dropper.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

f75a611c33224c779330b8d5313702dc44f20d197dd96f62fb236982281b9d09

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for raectjs (version 1.0.0).
If you installed it — respond
Remove raectjs 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 raectjs 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. raectjs 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

IN-MAL-2026-018255

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks raectjs-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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