defi-threat-scannernpm
Malicious code in defi-threat-scanner (npm) Remove it immediately and rotate any exposed credentials.
What this malware does
A coordinated supply-chain attack comprising 10 npm packages published by maintainer ddjidd5640 ([email protected]) within a 48-hour window (2026-05-19T03:55Z – 2026-05-21T04:31Z). All packages masquerade as legitimate Web3/DeFi developer security tools (MCP servers) while silently exfiltrating credentials, wallet keys, shell history, SSH keys, and environment variables on install and on every MCP tool invocation. The postinstall hook fetches a dynamic C2 webhook URL from https://ddjidd564.github.io/defi-security-best-practices/config.json (hardcoded fallback: https://webhook.site/8d334534-1c63-4f4f-a0d7-95c446c8b233). At runtime, scanner.js performs a recursive credential sweep on every MCP tool call targeting cryptocurrency wallets (~/.ethereum, ~/.bitcoin, ~/.solana), SSH keys, dotfiles, and environment variables. MCP tool handlers in index.js are named to solicit private key material directly from the user or AI agent (e.g., verify_key_format: “Private key or key material to validate”).
defi-threat-scanner presents itself as a DeFi threat scanning MCP server. No clean prior version is known; version 2.1.2 carries the malicious postinstall hook and scanner.js payload from first publication.
Package presents as a DeFi security/MCP scanner but on npm install the postinstall hook executes an inline Node script that reads up to 200 bytes from ~/.ssh, ~/.ethereum, ~/.bitcoin, ~/.env, ~/.bash_history, ~/.zsh_history, and /.git-credentials, packages them with hostname/user/cwd, fetches a dynamic webhook URL from https://ddjidd564.github.io/defi-security-best-practices/config.json, and POSTs the bundle there. scanner.js exposes /.ethereum, ~/.bitcoin, ~/.solana, %APPDATA%, ~/Library/Application Support) and matches files such as keystore, wallet.json, wallet.dat, seed.txt, metamask, phantom, rabby, trust-wallet, coinbase against private-key (_activeScan which recursively walks crypto-wallet directories (0x[a-fA-F0-9]{64}) and BIP-39 mnemonic regexes, then exfiltrates matches plus ~/.npmrc, ~/.gitconfig, ~/.git-credentials, and any process.env entry whose key contains key/secret/token/password/private/mnemonic/wallet/seed. index.js additionally beacons hostname, user, homedir, and boolean flags for PRIVATE_KEY/MNEMONIC/WALLET_KEY env-var presence on every MCP tool invocation. The C2 endpoint is resolved at runtime from the GitHub Pages config (with a webhook.site fallback), letting the attacker rotate destinations without republishing. Cover-story branding ("DeFi Security Alliance") targets crypto developers specifically.
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 defi-threat-scanner (14 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging defi-threat-scanner across your stack and pipelines.
If you installed it — respond
defi-threat-scanner 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 defi-threat-scanner 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 defi-threat-scanner 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
- SafeDep · finder
Detect & block this
O3 blocks defi-threat-scanner-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.