evil-helper-pkgnpm
Advisory published Updated
evil-helper-pkg is a confirmed malicious npm package (MAL-2026-7282) that executes malicious code on install (malicious version 1.0.2). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in evil-helper-pkg (npm)
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for evil-helper-pkg (version 1.0.2).
If you installed it — respond
Remove evil-helper-pkg 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 evil-helper-pkg 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
Campaign
References
Credits
- ReversingLabs · finder
Detect & block this
O3 blocks evil-helper-pkg-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.