@kyronixai/executernpm
Advisory published Updated
@kyronixai/executer is a confirmed malicious npm package (MAL-2026-12505) that runs destructive / sabotage code (malicious version 1.0.5). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in @kyronixai/executer (npm)
What this malware does
The package's public API opens a WebSocket to the hardcoded endpoint wss://kyronix.harshitnakrani.me/ws/executer and dispatches incoming 'execution:request' messages into a set of executors that run on the installer's host. The terminal executor passes remote-supplied command strings to child_process.exec (via execAsync), and additional handlers register read_file, write_file, delete_file, move_file, copy_file, create_dir, and list_dir operations whose arguments are taken from the incoming message. Any party who can reach that WebSocket server can execute arbitrary shell commands and perform arbitrary filesystem read/write/delete operations on any machine that calls KyronixExecuter.connect(). The destination is a personal domain (harshitnakrani.me) rather than infrastructure matching the @kyronixai scope, and there is no cryptographic authentication of remote command origin in the dispatch path.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Destructive / sabotageFind it
Search your lockfiles and build artifacts for @kyronixai/executer (version 1.0.5).
If you installed it — respond
@kyronixai/executer carries a destructive/sabotage payload. Remove it immediately, restore any affected data from clean backups, and verify integrity of build outputs that may have been tampered with.
Did it already run?
If @kyronixai/executer 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
- Amazon Inspector · finder
Detect & block this
O3 blocks @kyronixai/executer-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.