streak-math-calcnpm
streak-math-calc is a confirmed malicious npm package (MAL-2026-12115) that steals credentials and exfiltrates sensitive data (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in streak-math-calc (npm)
What this malware does
The package's main entry dist/index.mjs runs a top-level IIFE that chmod +x's a bundled ELF at dist/math-calc.bin and spawns it detached with piped stdio on any import/require. A hardcoded sha256 comparison is decorative — both branches proceed to spawn the binary. The ELF is a remote-access implant that beacons to 217.60.77.63: it downloads additional ELFs and shellcode from http://217.60.77.63/Others/<file> and /SC/<file> and executes them via mktemp+chmod+x or memfd_create, dispatches arbitrary shell commands via /bin/sh and /bin/bash, harvests SSH private keys, stored credentials, and database configs via /ssh_keys, /creds, /dbfind commands, and streams collected data chunked over POST /api/extract-receive to the C2 with additional exfiltration to litterbox.catbox.moe. A /persist command writes ~/.config/systemd/user/svc-update.service (labeled 'System Update Service') pointing at /proc/self/exe with Restart=always and enables it via systemctl --user for reboot persistence. The 'math accelerator' framing in the package description does not disclose the bundled ELF or its execution on import.
Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for streak-math-calc (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 streak-math-calc across your stack and pipelines.
If you installed it — respond
streak-math-calc is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If streak-math-calc 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 streak-math-calc 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 streak-math-calc-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.