Which versions of typescirpt-cli are malicious?

The following npm versions of typescirpt-cli are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate typescirpt-cli if I installed it?

typescirpt-cli is a typosquat — you almost certainly intended a legitimately-named package. Remove typescirpt-cli, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.

I already installed typescirpt-cli — how do I know if it already compromised me?

If typescirpt-cli 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.

Is typescirpt-cli part of a known attack campaign?

Yes — typescirpt-cli is associated with the IN-MAL-2026-018186 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 typescirpt-cli across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for typescirpt-cli (version 1.0.0).

Malicious package

typescirpt-clinpm

typescirpt-cli is a confirmed malicious npm package (MAL-2026-14148) that typosquats a legitimate package to trick installs (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in typescirpt-cli (npm)

MAL-2026-14148

Immediate action

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

npm uninstall typescirpt-cli

What this malware does

The package's postinstall script (scripts/postinstall.js) XOR-decodes obfuscated byte arrays using the key 'stf2026' to reconstruct a download URL and a powershell command. On Windows, and on Linux when WSL is detected, it downloads an opaque main.exe from https://github.com/bebraz1/qPzM50V1AKG0rVlH/releases/download/null/main.exe (an unrelated personal GitHub account, no version tag, no hash/signature verification) into TEMP and spawns it detached; from WSL it invokes a decoded powershell.exe bridge to fetch and run the binary on the Windows host. Separately, sendInstallMetrics POSTs a JSON payload containing node/arch/platform to the hardcoded bare IP 193.70.34.101:20099/vote over plain HTTP, with the host reconstructed via array-join to obscure the literal. The package name typosquats 'typescript-cli'.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

09d82fa51e42e6766fe0819517e9fb5be633702a0e22cb4da05d8920cb413c53

Detection & response playbook

Typosquat

Find it
Search your lockfiles and build artifacts for typescirpt-cli (version 1.0.0).
If you installed it — respond
typescirpt-cli is a typosquat — you almost certainly intended a legitimately-named package. Remove typescirpt-cli, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.
Did it already run?
If typescirpt-cli 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. typescirpt-cli on npm has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-018186

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks typescirpt-cli-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

Explore

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