bimi-makernpm
Malicious code in bimi-maker (npm) Remove it immediately and rotate any exposed credentials.
What this malware does
On npm install, the package's preinstall hook runs node index.js, which executes whoami and id via child_process and collects os.hostname(), os.userInfo(), os.platform(), homedir, cwd, and related host identifiers. The collected JSON payload is POSTed over HTTPS to a hardcoded Burp Collaborator subdomain, https://mqgby2y4jlp0k06gbpg1ulgjqaw1ks8h.oastify.com/detox56. The package ships no legitimate functionality matching its BIMI-related name; the only observable behavior is an install-time reconnaissance beacon to an attacker-controlled OAST endpoint, consistent with dependency-confusion or typosquat probing.
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 bimi-maker (version 8.2.4). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging bimi-maker across your stack and pipelines.
If you installed it — respond
bimi-maker 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 bimi-maker 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 bimi-maker 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 bimi-maker-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.