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Part of a larger attack: @asyncapi published 36 malicious packages. See the full campaign →
Malicious package

@asyncapi/generator-react-sdknpm

Advisory published Updated

@asyncapi/generator-react-sdk is a confirmed malicious npm package (MAL-2025-190637) that steals credentials and exfiltrates sensitive data (malicious versions 1.1.4, 1.1.5). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in @asyncapi/generator-react-sdk (npm)

MAL-2025-190637
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @asyncapi/generator-react-sdk

What this malware does

The package @asyncapi/generator-react-sdk was found to contain malicious code.

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.

This package was compromised by the Sha1-Hulud: The Second Coming NPM worm. The malicious payload steals tokens and credentials and publishes them to GitHub. The worm will propogate itself to NPM packages the user owns and establish persistence is a GitHub action. The package may also destroy the user's home directory.

Malicious versions

2 flagged
1.1.41.1.5

Indicators of compromise (SHA-256)

57298d30405e0c326d67747654e2c97e8e5d73a9c174774708c3acc7c107690f
7b0dadd48783af136a9dcf3f65cf9f24675841f02c7d1a5b6dc60709b392bf98
16a741180bcd4873788f2a3dc830215b66a7cba4be226d8b9bd798e290f358a0
848a08808a62b9a28b4e4c3783169e627449fe1e952acd21172adc571d044b00

Detection & response playbook

Credential / info stealer

  1. Find it

    Search your lockfiles and build artifacts for @asyncapi/generator-react-sdk (2 malicious versions).

  2. If you installed it — respond

    @asyncapi/generator-react-sdk 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 @asyncapi/generator-react-sdk 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. @asyncapi/generator-react-sdk on npm has been identified as a malicious package (versions 1.1.4, 1.1.5 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-j57g-3wpg-r49m

References

Credits

  • Amazon Inspector · finder

Detect & block this

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

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database
@asyncapi/generator-react-sdk (npm) malicious package — MAL-2025-190637 | O3 Security