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Malicious package

elf-stats-merry-cookiejar-915npm

Advisory published Updated

elf-stats-merry-cookiejar-915 is a confirmed malicious npm package (MAL-2025-192087) 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-merry-cookiejar-915 (npm)

MAL-2025-192087
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall elf-stats-merry-cookiejar-915

What this malware does

The package elf-stats-merry-cookiejar-915 was found to contain malicious code.

Malicious versions

1 flagged
1.0.0

Indicators of compromise (SHA-256)

9f816169c0d13a22ac2867c91607294f171e6cb6bdfde6abbf95ac0e907c561a
587e08bec56cf1e1f2cc807396c032f5abb8ef1e4a9d0386717f837e44e8eba1

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for elf-stats-merry-cookiejar-915 (version 1.0.0).

  2. If you installed it — respond

    Remove elf-stats-merry-cookiejar-915 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.

  3. Did it already run?

    If elf-stats-merry-cookiejar-915 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-merry-cookiejar-915 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-2025-06231

Credits

  • Amazon Inspector · finder
  • ReversingLabs · finder

Detect & block this

O3 blocks elf-stats-merry-cookiejar-915-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.

Explore

elf-stats-merry-cookiejar-915 (npm) malicious package — MAL-2025-192087 | O3 Security