Analytic 1933

Real-time monitoring identifies an Industrial Control System (ICS) protocol restart/reset command directed at a field device from a source not in the approved engineering workstation list, particularly where multiple devices receive restart commands within a short window. Documented precedent: Industroyer exploited CVE-2015-5374 via a crafted 18-byte User Datagram Protocol (UDP) packet to port 50000 on Siemens SIPROTEC relays. OT operational-fidelity gate: Alert only when the action is not attributable to an authorized operator/engineering source for the specific target and function, and it is either outside an approved change/maintenance window or lacks matching change-control context; where telemetry permits, require corroborating device, configuration, or process-state effect. Suppress activity that fully matches approved maintenance, commissioning, failover, recovery, or tested control procedures.

1. Pregled

1.1 Reference

1.2 Utvrđeni zahtjevi

1.3 Povezani propisi

2. Utvrđeni zahtjevi

3. Povezani propisi

Povezani zadaci

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