solana-web3-forknpm
solana-web3-fork is a confirmed malicious npm package (MAL-2026-10900) 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 solana-web3-fork (npm)
What this malware does
Package name appears to fork or imitate the well-known @solana/web3.js library. Bundled files lib/index.cjs.js and lib/index.esm.js contain co-occurring patterns of child_process usage, fetch/POST/GET calls, and shell utilities (curl, ping) within the same minified bundles. These keyword co-occurrences in a minified Solana SDK fork are concerning but cannot be conclusively distinguished from legitimate SDK behavior (RPC calls, build tooling) without semantic verification of the bundle. Specific hardcoded attacker C2 endpoints, credential-theft paths, or install-time lifecycle hooks have not been confirmed. Given the name-collision with a major crypto SDK and the suspicious pattern stacking in the bundle, manual review is warranted before allowing installer use.
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 solana-web3-fork (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 solana-web3-fork across your stack and pipelines.
If you installed it — respond
solana-web3-fork 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 solana-web3-fork 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 solana-web3-fork 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
- ReversingLabs · finder
Detect & block this
O3 blocks solana-web3-fork-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.