MAL-2026-16097
Malicious code in twilio-hackerone-poc-b8f21a (npm)
Details
--- _-= Per source details. Do not edit below this line.=-_
## Source: amazon-inspector (09b67e9bd1be2e2e13aae83616afffcbfdc3fb888b304dc7210be0ee39832aac) On `npm install`, postinstall.js automatically executes and performs host reconnaissance and exfiltration to a hardcoded ephemeral Cloudflare Quick Tunnel at https://encryption-watch-tubes-finger.trycloudflare.com/poc-v101-escape. The script runs `id`, `whoami`, and `uname`; enumerates `/`, `$HOME`, and `/tmp`; reads `/proc/self/cgroup` and `/proc/mounts`; probes the AWS instance-metadata service at 169.254.169.254 and the ECS task-metadata agent at 127.0.0.1:51678 and reports reachability; enumerates other `AC[0-9a-f]{32}` Twilio account SID directories present in `/tmp` (excluding one hardcoded SID) to enumerate co-tenants on shared build workers; and collects `Object.keys(process.env)`. All of the above is POSTed as JSON to the trycloudflare.com tunnel. The tunnel host is anonymous, ephemeral, and unrelated to any legitimate publisher; the package name and self-labeling as a 'HackerOne PoC' do not change the observed installer-side data-exfiltration behavior.
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