MalwarePublished 2 Jul 2026Updated 6 Jul 2026

@marketfront/advertisingdevtool (npm) · Malicious Code

Affects @marketfront/advertisingdevtoolSource GCVE Database

Malicious package : remove @marketfront/advertisingdevtool and rotate any secrets on hosts that installed it.

Data as of 6 Jul 2026, 23:41 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-6764

What to do

Remove @marketfront/advertisingdevtool from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.

Affected software

Product	Affected	Fixed in
npm@marketfront/advertisingdevtool	Affected =7.0.0	Fixed in–

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Description

The @marketfront/advertisingdevtool npm package version 7.0.0 is part of a malicious campaign involving 25 packages published within a short time frame. It contains a heavily obfuscated postinstall script that executes automatically during npm install, harvesting sensitive credentials from the host system. The harvested data includes SSH keys, AWS credentials, Kubernetes configs, Docker configs, npm tokens, Git credentials, environment files, and shell history. The stolen data is exfiltrated via encrypted HTTPS POST requests and DNS tunneling to a concealed command-and-control server. The package uses anti-analysis techniques to evade detection and presents a false cover story targeting organizations using private npm scopes.

Impact

The impact is the unauthorized collection and exfiltration of a wide range of sensitive credentials and environment data from infected hosts. This can lead to credential compromise, unauthorized access to cloud services, source code repositories, container registries, and other critical infrastructure. The anti-analysis features increase the difficulty of detection and analysis, potentially allowing prolonged undetected compromise.

Defensive guidance

The package should be considered malicious and removed immediately if found in any environment. Users and organizations should audit their dependencies for the presence of @marketfront/advertisingdevtool version 7.0.0 and any other packages from the @marketfront scope published on 2026-07-01 at version 7.0.0. Avoid installing or using these packages. Implement strict supply chain security practices such as verifying package provenance and using trusted registries. Monitor for suspicious network activity related to exfiltration channels described. Since this is a malicious package, remediation involves removal and credential rotation for any potentially compromised secrets.

Summary

This threat involves a malicious npm package, @marketfront/advertisingdevtool version 7.0.0, which executes an obfuscated postinstall script upon installation. The script collects extensive host reconnaissance data and reads approximately 20 sensitive credential files from the user's home directory. It encrypts and exfiltrates this data via two channels: an HTTPS POST with a custom X-Secret header and a DNS tunnel using encrypted subdomain labels. The package employs anti-debugging and anti-analysis checks to avoid detection. This campaign shares infrastructure and tooling with a previous campaign (@emcd-vue), indicating a recurring threat actor rotating scopes and maintainer identities. The package masquerades as an internal configuration loader with fake internal URLs to mislead victims.

References

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What to do

Affected software

Description

AI analysisMachine-generated, updated 6 Jul 2026, 23:41 UTC

Technical details

References

Community reviews