Which versions of kmf-cookieservice are malicious?

The following npm versions of kmf-cookieservice are flagged malicious: 999.999.999. Treat any of these as compromised.

How do I remediate kmf-cookieservice if I installed it?

Remove kmf-cookieservice 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 kmf-cookieservice — how do I know if it already compromised me?

If kmf-cookieservice 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 kmf-cookieservice part of a known attack campaign?

Yes — kmf-cookieservice is associated with the RLMA-2025-06393 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 kmf-cookieservice across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for kmf-cookieservice (version 999.999.999).

Malicious package

kmf-cookieservicenpm

Advisory published Dec 1, 2025Updated Dec 24, 2025

kmf-cookieservice is a confirmed malicious npm package (MAL-2025-191498) that executes malicious code on install (malicious version 999.999.999). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in kmf-cookieservice (npm)

MAL-2025-191498

Immediate action

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

npm uninstall kmf-cookieservice

What this malware does

The package kmf-cookieservice was found to contain malicious code.

Malicious versions

1 flagged

999.999.999

Indicators of compromise (SHA-256)

fb0651437cb2370149f89a07f151cb2a6138c1929a7497e823a20b3afa768212

7d629d9e7e93dab21e2621b0bd95f3bfeb8f9ae262f3befb0aafeab8426a6b06

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for kmf-cookieservice (version 999.999.999).
If you installed it — respond
Remove kmf-cookieservice 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 kmf-cookieservice 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. kmf-cookieservice on npm has been identified as a malicious package (version 999.999.999 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-06393

Credits

Amazon Inspector · finder
ReversingLabs · finder

Detect & block this

O3 blocks kmf-cookieservice-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