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Malicious package

sourceflow-trackernpm

Advisory published Updated

sourceflow-tracker is a confirmed malicious npm package (MAL-2026-5166) that executes malicious code on install (malicious version 99.91.9). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in sourceflow-tracker (npm)

MAL-2026-5166
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall sourceflow-tracker

What this malware does

package.json declares a dependency ltidisafe resolved directly from a raw tarball URL on a generic Google Cloud Storage bucket (https://storage.googleapis.com/lscunpentest/pack_ux_foundry.tgz). The tarball is unversioned, carries no integrity hash, and is hosted on infrastructure unrelated to any documented publisher; the bucket owner can replace its bytes at any time without changing the URL. On npm install, npm fetches and installs this tarball transitively and runs any lifecycle scripts it ships. The visible package itself is a stub: index.js only contains console.log("hello from lslslslslss"), package metadata is placeholder gibberish (description lspodcc, author lslsls), and the version is set to 99.91.9 — a pattern consistent with dependency-confusion attempts to outrank a legitimate internal package of the same name. The package's only practical effect when installed is to drop attacker-mutable code into the consumer's install graph.

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.

The OpenSSF Package Analysis project identified 'sourceflow-tracker' @ 99.91.9 (npm) as malicious.

It is considered malicious because:

  • The package communicates with a domain associated with malicious activity.

Malicious versions

1 flagged
99.91.9

Indicators of compromise (SHA-256)

1699207dcb748d9894d27585d5e49f48e906eae167d75434c15cd15f1aeb5502
0c32024f2d571ac850d0e9a7240951137c14d1f1529ab3e0f782ff677a5625ea
4590a6ebf9922235f803ec6400b9b804d3f1ea2704c8a2041855fcfd552f1737
02f647beb5bb5cf63b7b836740cc6de000c9a007627f1e013aec42ac359f6f29

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for sourceflow-tracker (version 99.91.9).

  2. If you installed it — respond

    Remove sourceflow-tracker 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.

  3. Did it already run?

    If sourceflow-tracker 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. sourceflow-tracker on npm has been identified as a malicious package (version 99.91.9 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-005013IN-MAL-2026-005014GHSA-c75m-7mcf-hwrg

References

Credits

  • Amazon Inspector · finder
  • OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks sourceflow-tracker-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.

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