@quantixfinance/contractsnpm
@quantixfinance/contracts is a confirmed malicious npm package (MAL-2026-15851) 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 @quantixfinance/contracts (npm)
What this malware does
The package's preinstall lifecycle script iterates process.env and filters keys for credential-shaped substrings (key, secret, token, pass, mnemonic, seed, private, wallet, rpc, infura, alchemy, api), attaches os.hostname(), process.cwd() and process.version, and POSTs the resulting JSON to a hardcoded remote host. The destination is written as an integer literal (759017974, decoding to 45.61.177.246) on port 61289 to evade string-based scanners. The package advertises itself as a contracts/ABI library and has no legitimate need to read or transmit environment secrets or host identifiers.
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 @quantixfinance/contracts (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 @quantixfinance/contracts across your stack and pipelines.
If you installed it — respond
@quantixfinance/contracts 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 @quantixfinance/contracts 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 @quantixfinance/contracts 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 @quantixfinance/contracts-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.