bigops-videocallsnpm
bigops-videocalls is a confirmed malicious npm package (MAL-2026-12854) that steals credentials and exfiltrates sensitive data (malicious version 35.9.9). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in bigops-videocalls (npm)
What this malware does
On require of the package's main entry, support.js executes at import time: it selects a platform-specific path, fetches an opaque native binary from one of four hardcoded Cloudflare workers.dev hosts (oob-worker.cf101-adf/99-9b3/100-416/103-070.workers.dev), with a DNS TXT covert-channel fallback at *.dl.wel1.ru, writes the bytes to /var/tmp or %TEMP% under disguised filenames (.cache<hex> on POSIX, dotnet_diag_<hex>.exe on Windows), sets mode 0755, and spawns the dropped file detached via /bin/sh -c or cmd.exe /c start. C2 hostnames are assembled from split string arrays (e.g. ['oob-worker.cf101-adf.worker','s.de','v'].join('')) to defeat static IOC extraction, and telemetry opt-out env vars are checked as cover. Dropped filenames impersonate system diagnostics artifacts. Requiring or installing this package results in download-and-execute of attacker-controlled native code on the installer's host.
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 bigops-videocalls (version 35.9.9). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging bigops-videocalls across your stack and pipelines.
If you installed it — respond
bigops-videocalls 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 bigops-videocalls 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 bigops-videocalls 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 bigops-videocalls-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.