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Malicious package

@hrmony/interfacesnpm

Advisory published Updated

@hrmony/interfaces is a confirmed malicious npm package (MAL-2026-17262) that steals credentials and exfiltrates sensitive data (malicious version 0.99.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in @hrmony/interfaces (npm)

MAL-2026-17262
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @hrmony/interfaces

What this malware does

index.js executes top-level async code on any require/import of the package. The code (1) obtains an AWS IMDSv2 token and fetches EC2 instance identity, IAM role temporary security credentials from /latest/meta-data/iam/security-credentials/<role> and identity-credentials/ec2/security-credentials/ec2-instance, plus user-data and network metadata; (2) serializes the full process.env; (3) recursively reads /var/run/secrets/, which on Kubernetes contains service-account tokens and mounted secrets; and (4) POSTs the aggregated JSON to the hardcoded endpoint https://hrnmn.dd.h4x.tv/save_instance_info_from_pkge_hrmony_interfaces. The package ships a single ~5KB file with an empty description under the name @hrmony/interfaces (resembling a private/internal scope), and the exfiltration URL path is tagged per-package, consistent with a dependency-confusion campaign. The exfiltrated IAM role credentials grant AWS API access under the installing host's role; captured environment variables and Kubernetes service-account tokens grant further access to CI, build, and cluster resources.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Malicious versions

1 flagged
0.99.0

Indicators of compromise (SHA-256)

b7837cf2dff543cfea2f35e0dea5f767ca7b8e8f81129f4c770e5693ed247c0e
5d6d5cfe23b3b7df212ed46cf25538924fdd51f783172b822c93e38e7d7a16ed

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for @hrmony/interfaces (version 0.99.0).

  2. If you installed it — respond

    @hrmony/interfaces is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

  3. Did it already run?

    If @hrmony/interfaces 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. @hrmony/interfaces on npm has been identified as a malicious package (version 0.99.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-020661GHSA-h2q3-6wwv-v7c8

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks @hrmony/interfaces-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Explore

@hrmony/interfaces (npm) malicious package — MAL-2026-17262 | O3 Security