bimi-makernpm
Advisory published Updated
bimi-maker is a confirmed malicious npm package (MAL-2026-10579) that opens a backdoor for remote access (malicious version 8.2.4). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in bimi-maker (npm)
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
Search your lockfiles and build artifacts for bimi-maker (version 8.2.4).
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 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
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.