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Malicious package

itc-actors-apinpm

Advisory published Updated

itc-actors-api is a confirmed malicious npm package (MAL-2026-4589) that opens a backdoor for remote access (malicious version 99.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in itc-actors-api (npm)

MAL-2026-4589
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall itc-actors-api

What this malware does

The package contains callback.js which collects host identifiers and user information (os.hostname(), os.userInfo(), os.platform(), cwd) and transmits them via an HTTPS request. The file structures the collected data with fields like hostname, username, and cwd — the canonical reconnaissance-beacon shape used by dependency-confusion / supply-chain reconnaissance campaigns. The package name and 99.0.0 version (a high-version-number pattern typical of dependency-confusion attacks targeting internal package names) further corroborate malicious intent. Installing or loading this package leaks identifying information about the installer's machine to an external endpoint.

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
99.0.0

Indicators of compromise (SHA-256)

22687e1f7601dde1753d3775925d62d040892631394937e56e9b9fba74fb85c6
71febd3f98de8965afd1151fd7d6f363a4747fc8978e0d3a7e82d8f68d5aaf69
ebc90348cabd9b144ed62b3cb167743e43a9daa103d18ca1a528533af051b426

Detection & response playbook

Backdoor / remote access
  1. Find it

    Search your lockfiles and build artifacts for itc-actors-api (version 99.0.0).

  2. If you installed it — respond

    itc-actors-api establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.

  3. Did it already run?

    If itc-actors-api 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. itc-actors-api on npm has been identified as a malicious package (version 99.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-004653IN-MAL-2026-004654GHSA-w2fv-53fr-6qwg

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks itc-actors-api-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.

Explore

itc-actors-api (npm) malicious package — MAL-2026-4589 | O3 Security