Automated Collection
Where this stands
No Sigma rule can address this — the telemetry MITRE names has no Sigma logsource behind it.
Sigma has no logsource taxonomy for ICS. MITRE's telemetry here is operational historians and controller state, which no Sigma rule can address.
What the technique is
Adversaries may automate collection of industrial environment information using tools or scripts. This automated collection may leverage native control protocols and tools available in the control systems environment. For example, the OPC protocol may be used to enumerate and gather information. Access to a system or interface with these native protocols may allow collection and enumeration of other attached, communicating servers and devices.
Read it on attack.mitre.orgWhat MITRE says you would watch
- AN1867
Monitor for any suspicious attempts to enable script execution on a system. If scripts are not commonly used on a system, but enabled, scripts running out of cycle from patching or other administrator functions are suspicious. Scripts should be captured from the file system when possible, to determine their actions and intent. Monitor executed commands and arguments for actions that could be taken to collect internal data. Monitor for unexpected files (e.g.,.pdf,.docx,.jpg) viewed for collecting internal data. Monitor for information collection on assets that may indicate deviations from standard operational tools. […]
Technique names and descriptions © MITRE ATT&CK®, CC BY 4.0. Not endorsed by MITRE.