AN1926: Analytic 1926
Monitor industrial process history data for events that correspond with command message functions, such as setpoint modification or changes to system status for key devices. This will not directly detect the technique’s execution, but instead may provide additional evidence that the technique has been used and may complement other detections. Monitor for anomalous or unexpected commands that may result in changes to the process operation (e.g., discrete write, logic and device configuration, mode changes) observable via asset application logs. Monitor for new or unexpected connections to controllers, which could indicate an Unauthorized Command Message being sent via Rogue Master. Monitor for anomalous or unexpected commands that may result in changes to the process operation (e.g., discrete write, logic and device configuration, mode changes) observable via asset application logs. Monitor for unexpected ICS protocol command functions to controllers from existing master devices (including from new processes) or from new devices. The latter is like detection for Rogue Master but requires ICS function level insight to determine if an unauthorized device is issuing commands (e.g., a historian).
Monitoring for unexpected or problematic values below the function level will provide better insights into potentially malicious activity but at the cost of additional false positives depending on the underlying operational process.
Security context for executives and security teams
AN1926: Analytic 1926 describes Monitor industrial process history data for events that correspond with command message functions, such as setpoint modification or changes to system status for key devices. This will not directly detect the technique’s execution, but instead may provide additional evidence that the technique has been used and may complement other detections. Monitor for anomalous or unexpected commands that may result in changes to the process operation (e.g., discrete write, logic and device configuration, mode changes) observabl...
Executive priority
AN1926: Analytic 1926 is an official MITRE ATT&CK detection analytic. Glexia treats it as defensive behavior context for prioritizing monitoring, control validation, and response planning without using the object by itself as an attribution claim.
Technical view
Security teams should validate AN1926: Analytic 1926 by reviewing the official ATT&CK relationships, mapped tactics (the mapped ATT&CK tactic context), supported platforms (None), and available local telemetry before making detection or mitigation decisions.
Likely telemetry
- Official ATT&CK relationships and object metadata
Detection direction
- Validate whether AN1926: Analytic 1926 appears in your detection coverage and tabletop scenarios.
- Use the object to align executive risk language with SOC, incident response, and detection engineering work.
- Do not treat ATT&CK relationship context as attribution without corroborating evidence.
Mitigation priorities
- Map the object to existing controls and identify missing telemetry or response ownership.
- Prioritize mitigations that reduce exposure on the listed platforms and tactics.
- Review adjacent ATT&CK relationships before changing policy, detections, or reporting language.
Additional notes and limits
Baseline Glexia take generated from the official MITRE ATT&CK STIX object, source hash, tactics, platforms, and detection fields. It is safe to replace with a richer model-generated take for the same source hash later.
This baseline take is source-grounded and schema-validated, but it does not include environment-specific telemetry, incident evidence, or threat-intelligence corroboration.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Analytic 1926
Monitor industrial process history data for events that correspond with command message functions, such as setpoint modification or changes to system status for key devices. This will not directly detect the technique’s execution, but instead may provide additional evidence that the technique has been used and may complement other detections. Monitor for anomalous or unexpected commands that may result in changes to the process operation (e.g., discrete write, logic and device configuration, mode changes) observable via asset application logs. Monitor for new or unexpected connections to controllers, which could indicate an Unauthorized Command Message being sent via Rogue Master. Monitor for anomalous or unexpected commands that may result in changes to the process operation (e.g., discrete write, logic and device configuration, mode changes) observable via asset application logs. Monitor for unexpected ICS protocol command functions to controllers from existing master devices (including from new processes) or from new devices. The latter is like detection for Rogue Master but requires ICS function level insight to determine if an unauthorized device is issuing commands (e.g., a historian).
Monitoring for unexpected or problematic values below the function level will provide better insights into potentially malicious activity but at the cost of additional false positives depending on the underlying operational process.
How security teams should use this page
Treat this object as behavior context, not an attribution claim. Validate the related groups, software, data sources, and mitigations against official ATT&CK relationships and your own telemetry before making control-coverage decisions.
All related ATT&CK context
No relationships are available in the current normalized data for this object.
Object version and sync metadata
The fields below describe the current mirrored snapshot. When Glexia retains multiple ATT&CK source imports, you can open the table to compare the same object across releases (hashes and MITRE timestamps). For MITRE’s own release notes and roadmap, see ATT&CK resources — Updates.
Imported snapshots across ATT&CK releases(2)
| Release | Bundle imported | Object version | Modified | Status | Raw hash |
|---|---|---|---|---|---|
| 19.2 | 1.0 | Current bundle | 1fa353319010… | ||
| 19.1 | 1.0 | Older bundle | 1fa353319010… |
Mirrored ATT&CK source object
The raw object is retained through the mirrored ATT&CK source bundle and object hash. The raw endpoint returns the exact object from the mirrored bundle when available.
External references and citations
MITRE external references are preserved separately from Glexia analysis so citations remain traceable to their original source records.
- [1]mitre-attackAN1926Open source URL
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