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Clop created custom web shell for Windchill data theft attacks
August 18, 2026 · BleepingComputer · Severity: CRITICAL
A custom Java web shell likely linked to the Clop ransomware gang was designed specifically for PTC Windchill and FlexPLM servers, with built-in features to decrypt credentials, enumerate file repositories, and steal files.
Key Takeaways
- Clop ransomware gang developed custom Java web shell targeting PTC Windchill and FlexPLM servers.
- Web shell includes built-in features to decrypt credentials enumerate repositories and steal files.
- Organizations using PTC Windchill should audit servers for unusual Java web shell activity immediately.