Which versions of elf-stats-cosy-sled-550 are malicious?

The following npm versions of elf-stats-cosy-sled-550 are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate elf-stats-cosy-sled-550 if I installed it?

Remove elf-stats-cosy-sled-550 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 elf-stats-cosy-sled-550 — how do I know if it already compromised me?

If elf-stats-cosy-sled-550 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 elf-stats-cosy-sled-550 part of a known attack campaign?

Yes — elf-stats-cosy-sled-550 is associated with the RLMA-2025-06160 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 elf-stats-cosy-sled-550 across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for elf-stats-cosy-sled-550 (version 1.0.0).

Malicious package

elf-stats-cosy-sled-550npm

Advisory published Dec 5, 2025Updated Dec 23, 2025

elf-stats-cosy-sled-550 is a confirmed malicious npm package (MAL-2025-192328) 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 elf-stats-cosy-sled-550 (npm)

MAL-2025-192328

Immediate action

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

npm uninstall elf-stats-cosy-sled-550

What this malware does

The package elf-stats-cosy-sled-550 was found to contain malicious code.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

1d003b03c0bb71b9501930d50f6b45cd0c91c9b89080bea5d69f04f0b561f3f8

719c7be2c2005e182157469aca67eb8e4ffa9e62961d981030b20b052133354b

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for elf-stats-cosy-sled-550 (version 1.0.0).
If you installed it — respond
Remove elf-stats-cosy-sled-550 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 elf-stats-cosy-sled-550 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. elf-stats-cosy-sled-550 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-2025-06160

Credits

Amazon Inspector · finder
ReversingLabs · finder

Detect & block this

O3 blocks elf-stats-cosy-sled-550-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