Malicious FrostyGoop OT Encryptor Execution with Modbus Config
- Product
- windows
- Category
- process_creation
- Author
- HuntRule
- Published
- 2026-10-20
- Updated
- 2026-10-20
What it detects
This rule detects execution of the FrostyGoop OT malware binary go-encrypt.exe or any process referencing its task_test.json Modbus configuration file. This behavior matches the FrostyGoop campaign targeting industrial control systems where the tool read a JSON target list to issue unauthorized Modbus commands. Detecting the encryptor and its config is critical because it directly manipulates OT device registers and can disrupt physical processes.
Reporting behind it
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.
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