backpack-iosnpm
Malicious code in backpack-ios (npm) Remove it immediately and rotate any exposed credentials.
What this malware does
package.json declares "preinstall": "node index.js", causing index.js to execute automatically on npm install. The script collects host identifiers (os.hostname, os.userInfo, homedir, DNS servers, cwd, full package.json) and reads /etc/passwd and /etc/hosts via fs.readFileSync, then HTTPS POSTs the JSON payload to xopalguac3nk3bb10x9r4t6q7hdd13ps.oastify.com — a Burp Collaborator (OAST) subdomain used for out-of-band data exfiltration. The package name mirrors Skyscanner's Backpack iOS design-system package while shipping a ~2KB exfil-only payload with empty author/description fields, consistent with a dependency-confusion / typosquat lure. Installing this package directly leaks installer host identity and local user account data to an attacker-controlled endpoint.
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 backpack-ios (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 backpack-ios across your stack and pipelines.
If you installed it — respond
backpack-ios 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 backpack-ios 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 backpack-ios 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 backpack-ios-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.