sysbinnpm
Advisory published Updated
sysbin is a confirmed malicious npm package (MAL-2026-3773) that steals credentials and exfiltrates sensitive data (malicious version 1.0.34). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in sysbin (npm)
What this malware does
Package metadata advertises sysbin as a 'System binary configuration tool' but the tarball ships pointer.py, a stealth overlay that runs automatically when index.js executes. index.js calls startApp() unconditionally at the bottom of the main module (triggered by node index.js, the sys-bin bin entry, npm start, or require('sysbin')). If Python is not present, index.js first tries winget install Python.Python.3.12 --silent, and on failure downloads https://www.python.org/ftp/python/3.12.3/python-3.12.3-amd64.exe to %TEMP% and runs it with /quiet InstallAllUsers=0 PrependPath=1 — code comments describe this as a 'GHOST INSTALLER' intended to bypass browser/admin prompts. It then pip-installs pyperclip, keyboard, mss, pyautogui, pywin32, and uiautomation and launches pointer.py. pointer.py polls the clipboard every 300ms via pyperclip.paste() and POSTs every change to the hardcoded URL https://iq-overlay-pointer.vercel.app/api (pointer.py:281). It also binds hotkeys that capture full-screen screenshots via mss/ImageGrab, base64-encodes them as JPEG, and POSTs them to the same endpoint (pointer.py:231). The endpoint is hardcoded with no config surface, no documentation, and no consent prompt. Additional stealth features (panic_exit on Ctrl+Q, Esc-to-hide transparent Tk window, keystroke-replay 'mash-to-type' mode) confirm the tool is designed to hide from the machine's user. This is an intentional supply-chain attack: installing and running sysbin exfiltrates clipboard contents and screenshots to an author-controlled host.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for sysbin (version 1.0.34).
If you installed it — respond
sysbin 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 sysbin was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks sysbin-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.