VYPR

pypi · Malicious package advisory

Malware

proxycer

MAL-2026-15935

Malicious code in proxycer (PyPI)

Details


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## Source: amazon-inspector (2286dac5be0a9e8cc2e7b1ff92253d4b09beb0c43d5e795b9b9ea1391e6f8764)
The package's top-level __init__.py imports starts.py, which is a single-line loader that reverses a ~100KB string literal, base64-decodes it, marshal.loads the result into a code object, and exec()s it. All actual functionality is concealed behind reversal + base64 + marshal bytecode obfuscation, with an empty README and empty PKG-INFO description. The obfuscated code object runs automatically on `import proxycer`, so any behavior it contains (credential access, outbound network, filesystem writes, persistence) executes on the installer's host without source visibility.

## Source: kam193 (c7f54d8a442ae6b7c359629af5db210aafade4776e03f44895e67923bd464e29)
The provided functionality hides code that exfiltrates files to a remote location.


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


Campaign: 2026-09-asti


Reasons (based on the campaign):


 - files-exfiltration


 - action-hidden-in-lib-usage


 - target:android

Compromised versions (1)

  • 0.1.0

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