binproto

GHSA-hfq4-83x9-rjjx

Malicious code in binproto (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 1.0.1`

## Source: kam193 (72de81f36a15d75d302ca94b378c3e5025b6d0cb2d24360d06527130ed053ebd)
When using the provided functionality, the code silently downloads and executes a malicious executable.


---

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.


Campaign: 2026-05-binproto


Reasons (based on the campaign):


 - obfuscation


 - Downloads and executes a remote executable.


 - action-hidden-in-lib-usage


 - malware

---

Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/binproto/MAL-2026-4810.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/binproto
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/binproto/MAL-2026-4810.json
- https://www.virustotal.com/gui/file/b9b47b069a9ad7ff489817a035c158b5a99754178f7bbf36c112fdd5eff9ee08/detection
- https://github.com/advisories/GHSA-hfq4-83x9-rjjx

Compromised versions (1)

= 1.0.1

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.