infrabenchPyPI
Advisory published Updated
infrabench is a confirmed malicious PyPI package (MAL-2026-17469) that steals credentials and exfiltrates sensitive data (malicious versions 0.1.0, 0.1.1, 0.2.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in infrabench (PyPI)
What this malware does
The package's public API harness.run(edge=<host>) downloads two sha256-pinned gzipped native binaries ('inference-core.bin.gz' and 'edge-conn.bin.gz') from https://<edge>/files/, chmods them 0755, and spawns them on the installer's host. The caller-supplied edge argument chooses only the delivery CDN; the binary contents are fixed by the author via the pinned hashes. The surrounding Python code emits a synthetic, deterministic progress trace (fabricated step/loss/tok-s lines) rather than real benchmark data, so the advertised 'evaluation harness' purpose does not match the behavior of the fetched code. The JSON configuration passed to the 'inference-core' binary — pools:[{url,user,pass:'vox',keepalive,tls}], cpu:{enabled,threads,mem-locked}, cache-budget, log-period, autosave — matches the xmrig-family mining-pool client schema rather than any inference or benchmarking worker schema, and the second binary (~19MB) is invoked as 'access tcp --hostname <host> --url 127.0.0.1:<port>', the Cloudflare cloudflared access-tunnel CLI shape used to reach a pool endpoint behind a tunnel. A _hb() routine additionally POSTs run id, state, and up to 4000 characters of exception traceback to https://<edge>/hb as an operator heartbeat/control-plane check-in. Installing and invoking the harness causes the installer's machine to execute author-controlled native code and donate CPU to an operator-controlled mining pool under a fake benchmarking cover story.
The package imitates real activity and instead deploys a coin miner.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-10-voxeval
Reasons (based on the campaign):
- cryptominer
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for infrabench (3 malicious versions).
If you installed it — respond
infrabench 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 infrabench 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
- Kamil Mańkowski (kam193) · reporter
Detect & block this
O3 blocks infrabench-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.