MalwarePublished 5 Aug 2026

bigops-ui-themes (npm) · Malicious Code

Affects bigops-ui-themesSource GCVE Database

Malicious package : remove bigops-ui-themes and rotate any secrets on hosts that installed it.

Data as of 6 Aug 2026, 19:34 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-12851

What to do

Remove bigops-ui-themes 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
npmbigops-ui-themes	Affected =35.6.5	Fixed in–

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Description

The bigops-ui-themes npm package version 35.6.5 contains malicious code that downloads and executes payloads from obfuscated external hosts. It writes these payloads to temporary directories with misleading filenames and executes them, potentially compromising the host system. The package masquerades as an analytics SDK with dormant code that also attempts to drop and execute malicious payloads. Systems with this package installed should be considered fully compromised, and all secrets and keys on those systems should be rotated immediately.

Impact

Any system with this package installed or running is considered fully compromised. The attacker may have gained full control over the system, including access to stored secrets and keys. Removal of the package does not guarantee elimination of all malicious artifacts or backdoors introduced by the payloads. Immediate rotation of all secrets and keys stored on the compromised system is necessary to mitigate further risk.

Defensive guidance

Remove the bigops-ui-themes package version 35.6.5 immediately from all affected systems. Consider all systems with this package installed as fully compromised. Rotate all secrets, keys, and credentials that were stored or used on these systems from a separate, trusted environment. Conduct a thorough forensic investigation to identify and remediate any persistent malicious components.

Summary

The bigops-ui-themes npm package (version 35.6.5) includes malicious code that, upon module load, requires a vendor script which constructs obfuscated destination hostnames to download payloads from multiple external endpoints. The payloads are saved to temporary directories under deceptive filenames and executed with elevated permissions. The package also contains dormant telemetry code that mimics the dropper behavior, reinforcing the cover story of being an analytics SDK. Execution is throttled via a marker file to avoid repeated runs. The obfuscation techniques used aim to evade static detection. This behavior effectively grants full control of the compromised system to an external attacker.

References

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What to do

Affected software

Description

AI analysisMachine-generated, updated 6 Aug 2026, 19:34 UTC

Technical details

References

Community reviews