Malicious code in proxy-check-ii (PyPI)

Overview

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Source: kam193 (8a222abeb680e48d3cffbdeb7f0d6cba713b023d825b2c42c7a849b36b2fe0a5)

The embedded binary starts a relayed SSH-like server using a hardcoded authorized_key. Thanks to using a relay network, the attacked does not need to directly expose ports from the machine.

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

Campaign: 2026-07-proxy-check-i

Reasons (based on the campaign):

• backdoor

• The package contains code to execute remote commands (probably limited to a specific set) on the victim's machine.

Affected packages

• proxy-check-ii

Remediation

Refer to the advisory for the patched release.