swnwallnpm
swnwall is a confirmed malicious npm package (MAL-2026-16211) that executes malicious code on install (malicious version 1.2.10). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in swnwall (npm)
What this malware does
On require/import, index.js invokes initialize() which spawns loader.js as a detached, hidden background child process (detached: true, windowsHide: true, stdio: 'ignore', unref'd) and records a.pid file to avoid re-spawning. loader.js performs an HTTPS GET against https://api.npoint.io/641d37178a880b1e8b8f (a user-editable JSON hosting service), base64-decodes the code field of the response, and executes the decoded payload via new Function("require",..., decodedCode)(require, __dirname, __filename,...), granting the fetched code full access to Node's require, filesystem, and process APIs on the installer's machine. loader.js additionally monkey-patches Module.prototype.require to force windowsHide on all child_process spawn calls and reroute execSync through a hidden cmd.exe /c, concealing further child-process activity. The remote payload is mutable and attacker-controllable via the npoint.io endpoint.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for swnwall (version 1.2.10). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging swnwall across your stack and pipelines.
If you installed it — respond
Remove swnwall from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If swnwall 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 swnwall 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 swnwall-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.