tol8tnpm
Advisory published Updated
tol8t is a confirmed malicious npm package (MAL-2026-16218) that opens a backdoor for remote access (malicious version 14.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in tol8t (npm)
What this malware does
package.json declares preinstall and postinstall lifecycle hooks that use wget to POST installer host identifiers to a hardcoded Discord webhook at https://discord.com/api/webhooks/1413937656697720862/. The preinstall hook sends the installer's current working directory ($(pwd)) and the postinstall hook sends the machine hostname ($(hostname)). Both fire automatically during npm install with no user interaction. The package ships no other functionality; its sole behavior is host reconnaissance beaconing to an attacker-controlled Discord webhook.
The OpenSSF Package Analysis project identified 'tol8t' @ 14.0.0 (npm) as malicious.
It is considered malicious because:
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The package communicates with a domain associated with malicious activity.
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The package executes one or more commands associated with malicious behavior.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Backdoor / remote accessFind it
Search your lockfiles and build artifacts for tol8t (version 14.0.0).
If you installed it — respond
tol8t establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.
Did it already run?
If tol8t 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
- OpenSSF: Package Analysis · finder
Detect & block this
O3 blocks tol8t-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.