MITRE ATT&CK T1691.002: Reporting Message
When to use this skill
Use this skill when the task involves T1691.002, Reporting Message, ics ATT&CK, TTP mapping, detection engineering, hunting, incident-response enrichment, control validation, or authorized adversary-emulation planning. Treat it as a defensive analysis aid: keep outputs focused on understanding, detecting, mitigating, and safely validating this ATT&CK sub-technique.
Technique context
- ATT&CK domain: ics
- ATT&CK ID: T1691.002
- Technique name: Reporting Message
- Type: sub-technique
- ATT&CK URL: https://attack.mitre.org/techniques/T1691/002
- Tactics: inhibit-response-function
- Platforms: Not specified
- Required permissions: Not specified
- Effective permissions: Not specified
- Defenses bypassed: Not specified
ATT&CK description
Adversaries may block or prevent a reporting message from reaching its intended target. In control systems, reporting messages contain telemetry data (e.g., I/O values) pertaining to the current state of equipment and the industrial process. By blocking these reporting messages, an adversary can potentially hide their actions from an operator.
Blocking reporting messages in control systems that manage physical processes may contribute to system impact, causing inhibition of a response function. A control system may not be able to respond in a proper or timely manner to an event, such as a dangerous fault, if its corresponding reporting message is blocked.(Citation: Bonnie Zhu, Anthony Joseph, Shankar Sastry 2011)(Citation: Electricity Information Sharing and Analysis Center; SANS Industrial Control Systems March 2016)
Agent workflow
- Clarify scope: identify the system, asset class, log sources, cloud or endpoint platform, and whether the user wants triage, detection, coverage assessment, or safe emulation planning.
- Load bundled resources as needed: use
references/technique-profile.json for structured metadata, references/detection-and-mitigation.md for triage and telemetry guidance, references/known-threat-context.md for ATT&CK relationship context, and templates/ for repeatable outputs.
- Map observations to ATT&CK: compare the user's evidence to the ATT&CK description, tactics, platforms, and known procedure patterns before asserting a match.
- Produce defensive outputs: prioritize hypotheses, telemetry requirements, detection logic ideas, validation steps, containment guidance, and mitigations.
- Preserve uncertainty: distinguish confirmed evidence, plausible indicators, assumptions, and gaps. Recommend what to collect next.
- Stay safe: do not provide malware, credential theft, persistence, evasion, destructive automation, or unauthorized exploitation instructions. For adversary emulation, keep steps bounded to approved lab or control-validation contexts and omit operational abuse details.
Bundled resources
references/technique-profile.json: machine-readable ATT&CK metadata for this technique.references/detection-and-mitigation.md: detection notes, telemetry checklist, triage questions, mitigation candidates, and false-positive considerations.references/known-threat-context.md: ATT&CK relationship context with attribution cautions.templates/detection-brief.md: detection engineering brief template.templates/hunt-plan.md: threat hunt plan template.templates/incident-response-note.md: incident response note template.templates/coverage-assessment.md: ATT&CK coverage assessment template.scripts/render_brief.py: local helper that renders a Markdown defensive brief from technique-profile.json.assets/output-schema.json: JSON schema for structured technique analysis outputs.
To generate a quick brief, run python scripts/render_brief.py --output brief.md from inside this skill directory, or adapt the templates directly.
Detection guidance
No ATT&CK detection guidance was present in the source STIX object.
Useful telemetry and data sources
- Not specified in the STIX object.
Mitigations to consider
- Network Allowlists
- Out-of-Band Communications Channel
- Static Network Configuration
Known threat context
Use these examples only as contextual leads, not as proof that an observed event is this technique:
- 2015 Ukraine Electric Power Attack (campaign)
- Industroyer (malware)
Recommended output pattern
When responding with this skill, structure the answer as:
- Assessment: whether the evidence supports this ATT&CK mapping and why.
- Evidence: specific indicators, logs, behaviors, and assumptions.
- Detection: telemetry sources, analytic logic, and tuning considerations.
- Response: containment, eradication, recovery, and validation actions.
- Coverage gaps: missing logs, sensors, controls, or environmental details.
- References: include the ATT&CK URL and any user-provided evidence references.
1---2name: attack-ics-t1691-002-reporting-message3description: Analyze MITRE ATT&CK T1691.002 Reporting Message in the ics matrix. Use for TTP triage, detection engineering, hunting, defensive emulation planning, mitigations, incident response mapping, ATT&CK coverage, or questions mentioning T1691.002, Reporting Message, or ics ATT&CK. Adversaries may block or prevent a reporting message from reaching its intended target.4license: MITRE ATT&CK Terms of Use apply to ATT&CK-derived content. See h5---67# MITRE ATT&CK T1691.002: Reporting Message89## When to use this skill1011Use this skill when the task involves T1691.002, Reporting Message, ics ATT&CK, TTP mapping, detection engineering, hunting, incident-response enrichment, control validation, or authorized adversary-emulation planning. Treat it as a defensive analysis aid: keep outputs focused on understanding, detecting, mitigating, and safely validating this ATT&CK sub-technique.1213## Technique context1415- ATT&CK domain: ics16- ATT&CK ID: T1691.00217- Technique name: Reporting Message18- Type: sub-technique19- ATT&CK URL: https://attack.mitre.org/techniques/T1691/00220- Tactics: inhibit-response-function21- Platforms: Not specified22- Required permissions: Not specified23- Effective permissions: Not specified24- Defenses bypassed: Not specified2526## ATT&CK description2728Adversaries may block or prevent a reporting message from reaching its intended target. In control systems, reporting messages contain telemetry data (e.g., I/O values) pertaining to the current state of equipment and the industrial process. By blocking these reporting messages, an adversary can potentially hide their actions from an operator.2930Blocking reporting messages in control systems that manage physical processes may contribute to system impact, causing inhibition of a response function. A control system may not be able to respond in a proper or timely manner to an event, such as a dangerous fault, if its corresponding reporting message is blocked.(Citation: Bonnie Zhu, Anthony Joseph, Shankar Sastry 2011)(Citation: Electricity Information Sharing and Analysis Center; SANS Industrial Control Systems March 2016)3132## Agent workflow33341. Clarify scope: identify the system, asset class, log sources, cloud or endpoint platform, and whether the user wants triage, detection, coverage assessment, or safe emulation planning.352. Load bundled resources as needed: use `references/technique-profile.json` for structured metadata, `references/detection-and-mitigation.md` for triage and telemetry guidance, `references/known-threat-context.md` for ATT&CK relationship context, and `templates/` for repeatable outputs.363. Map observations to ATT&CK: compare the user's evidence to the ATT&CK description, tactics, platforms, and known procedure patterns before asserting a match.374. Produce defensive outputs: prioritize hypotheses, telemetry requirements, detection logic ideas, validation steps, containment guidance, and mitigations.385. Preserve uncertainty: distinguish confirmed evidence, plausible indicators, assumptions, and gaps. Recommend what to collect next.396. Stay safe: do not provide malware, credential theft, persistence, evasion, destructive automation, or unauthorized exploitation instructions. For adversary emulation, keep steps bounded to approved lab or control-validation contexts and omit operational abuse details.4041## Bundled resources4243- `references/technique-profile.json`: machine-readable ATT&CK metadata for this technique.44- `references/detection-and-mitigation.md`: detection notes, telemetry checklist, triage questions, mitigation candidates, and false-positive considerations.45- `references/known-threat-context.md`: ATT&CK relationship context with attribution cautions.46- `templates/detection-brief.md`: detection engineering brief template.47- `templates/hunt-plan.md`: threat hunt plan template.48- `templates/incident-response-note.md`: incident response note template.49- `templates/coverage-assessment.md`: ATT&CK coverage assessment template.50- `scripts/render_brief.py`: local helper that renders a Markdown defensive brief from `technique-profile.json`.51- `assets/output-schema.json`: JSON schema for structured technique analysis outputs.5253To generate a quick brief, run `python scripts/render_brief.py --output brief.md` from inside this skill directory, or adapt the templates directly.5455## Detection guidance5657No ATT&CK detection guidance was present in the source STIX object.5859## Useful telemetry and data sources6061- Not specified in the STIX object.6263## Mitigations to consider6465- Network Allowlists66- Out-of-Band Communications Channel67- Static Network Configuration6869## Known threat context7071Use these examples only as contextual leads, not as proof that an observed event is this technique:7273- 2015 Ukraine Electric Power Attack (campaign)74- Industroyer (malware)7576## Recommended output pattern7778When responding with this skill, structure the answer as:7980- Assessment: whether the evidence supports this ATT&CK mapping and why.81- Evidence: specific indicators, logs, behaviors, and assumptions.82- Detection: telemetry sources, analytic logic, and tuning considerations.83- Response: containment, eradication, recovery, and validation actions.84- Coverage gaps: missing logs, sensors, controls, or environmental details.85- References: include the ATT&CK URL and any user-provided evidence references.
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