bugexploitnpm
Malicious code in bugexploit (npm) Remove it immediately and rotate any exposed credentials.
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
Indicators of compromise (SHA-256)
Detection & response playbook
Backdoor / remote accessFind 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.
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.
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.
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
Campaign
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.