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Malicious package

bugexploitnpm

Malicious code in bugexploit (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-10201
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall bugexploit

What this malware does

package.json declares a postinstall script that runs node index.js. On npm install, index.js collects the installer's username (os.userInfo()), hostname (os.hostname()), and current working directory (process.cwd()), then POSTs them as JSON via https.request to the hardcoded endpoint https://webhook.site/cd23dfb8-a0fc-4ff7-818c-f7812fcb4bec. The transmission is unconditional and fires automatically on default install. The destination is a generic webhook-capture service unrelated to any declared package purpose, and the collected fields are host identifiers useful for victim triage / beacon confirmation.

Malicious versions

1 flagged
99.9.9

Indicators of compromise (SHA-256)

745f81b0c53fa121939d4f71680783860795a394eb30308f6e7e2dcf29401c92

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 bugexploit (version 99.9.9). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging bugexploit across your stack and pipelines.

  2. If you installed it — respond

    bugexploit 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 bugexploit 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 bugexploit 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. bugexploit on npm has been identified as a malicious package (version 99.9.9 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-009753

References

Credits

  • Amazon Inspector · finder

Detect & block this

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