Which versions of @montanatonytest/app.web are malicious?

Every published version of @montanatonytest/app.web on npm is considered malicious. Remove the package entirely.

How do I remediate @montanatonytest/app.web if I installed it?

Remove @montanatonytest/app.web from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

I already installed @montanatonytest/app.web — how do I know if it already compromised me?

If @montanatonytest/app.web was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

Is @montanatonytest/app.web part of a known attack campaign?

Yes — @montanatonytest/app.web is associated with the GHSA-g938-5928-2j43 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find @montanatonytest/app.web across my projects, lockfiles, and CI pipelines?

Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for @montanatonytest/app.web (all published versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging @montanatonytest/app.web across your stack and pipelines.

Malicious package

@montanatonytest/app.webnpm

Malicious code in @montanatonytest/app.web (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-3321

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall @montanatonytest/app.web

What this malware does

The package @montanatonytest/app.web 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.

Malicious versions

all versions

Every published version of this package is considered malicious — remove it entirely.

Indicators of compromise (SHA-256)

db49c57a4d9461203197e033d4626d4d52f1eb447151ada4d5bd849616ab67a1

ae7604e0d0f1f42d621917113451c0b0583f2c74d4bbe59d92db2cf68101c674

Detection & response playbook

Malicious package

Find it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for @montanatonytest/app.web (all published versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging @montanatonytest/app.web across your stack and pipelines.
If you installed it — respond
Remove @montanatonytest/app.web from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If @montanatonytest/app.web was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks @montanatonytest/app.web before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. @montanatonytest/app.web on npm has been identified as a malicious package (all published versions flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-g938-5928-2j43

References

github.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks @montanatonytest/app.web-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Malware detection Runtime egress monitoring