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Malicious package

configcat-trello-powerupnpm

Malicious code in configcat-trello-powerup (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-4535
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall configcat-trello-powerup

What this malware does

package.json declares "preinstall": "node index.js", which fires automatically on npm install. index.js collects host identifiers (os.hostname, os.userInfo, homedir, DNS servers) and reads sensitive system files (/etc/passwd, /etc/hosts) plus package metadata, then HTTPS POSTs the bundle to a hardcoded Burp Collaborator subdomain hzklpyrf8gdhgtycz16veroqihobc10q.oastify.com. The package ships no real functionality — empty description, empty author, and a name resembling a plausible internal Trello/ConfigCat integration — fingerprint of a dependency-confusion squat whose only purpose is to beacon installer-side data to the attacker for follow-on targeting.

Malicious versions

1 flagged
1.0.0

Indicators of compromise (SHA-256)

408ece81736dc366c6b5bbe4bb43186d622df67d9c0b675ace108f1b74439a08
5365489bc7a763096bf4be47f80bd47e4513917d8b37ba2754e33ae11983872b

Detection & response playbook

Backdoor / remote access
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for configcat-trello-powerup (version 1.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging configcat-trello-powerup across your stack and pipelines.

  2. If you installed it — respond

    configcat-trello-powerup 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 configcat-trello-powerup 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.

  4. How O3 protects you

    O3 blocks configcat-trello-powerup 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. configcat-trello-powerup 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-2026-004021IN-MAL-2026-004020

References

Credits

  • Amazon Inspector · finder

Detect & block this

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

configcat-trello-powerup (npm) malicious package — MAL-2026-4535 | O3 Security