MITRE ATT&CK T1693.002: Module Firmware
When to use this skill
Use this skill when the task involves T1693.002, Module Firmware, 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: T1693.002
- Technique name: Module Firmware
- Type: sub-technique
- ATT&CK URL: https://attack.mitre.org/techniques/T1693/002
- Tactics: impair-process-control, inhibit-response-function, persistence
- Platforms: Not specified
- Required permissions: Not specified
- Effective permissions: Not specified
- Defenses bypassed: Not specified
ATT&CK description
Adversaries may install malicious or vulnerable firmware onto modular hardware devices. Control system devices often contain modular hardware devices. These devices may have their own set of firmware that is separate from the firmware of the main control system equipment.
This technique is similar to System Firmware, but is conducted on other system components that may not have the same capabilities or level of integrity checking. Although it results in a device re-image, malicious device firmware may provide persistent access to remaining devices.(Citation: Daniel Peck, Dale Peterson January 2009)
An easy point of access for an adversary is the Ethernet card, which may have its own CPU, RAM, and operating system. The adversary may attack and likely exploit the computer on an Ethernet card. Exploitation of the Ethernet card computer may enable the adversary to accomplish additional attacks, such as the following:(Citation: Daniel Peck, Dale Peterson January 2009)
- Delayed Attack - The adversary may stage an attack in advance and choose when to launch it, such as at a particularly damaging time.
- Brick the Ethernet Card - Malicious firmware may be programmed to result in an Ethernet card failure, requiring a factory return.
- Random Attack or Failure - The adversary may load malicious firmware onto multiple field devices. Execution of an attack and the time it occurs is generated by a pseudo-random number generator.
- A Field Device Worm - The adversary may choose to identify all field devices of the same model, with the end goal of performing a device-wide compromise.
- Attack Other Cards on the Field Device - Although it is not the most important module in a field device, the Ethernet card is most accessible to the adversary and malware. Compromise of the Ethernet card may provide a more direct route to compromising other modules, such as the CPU module.
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
- Access Management
- Audit
- Boot Integrity
- Code Signing
- Communication Authenticity
- Encrypt Network Traffic
- Encrypt Sensitive Information
- Filter Network Traffic
- Human User Authentication
- Network Allowlists
- Network Segmentation
- Software Process and Device Authentication
Known threat context
Use these examples only as contextual leads, not as proof that an observed event is this technique:
- No group or software uses relationships were included for this technique in the source STIX bundle.
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-t1693-002-module-firmware3description: Analyze MITRE ATT&CK T1693.002 Module Firmware in the ics matrix. Use for TTP triage, detection engineering, hunting, defensive emulation planning, mitigations, incident response mapping, ATT&CK coverage, or questions mentioning T1693.002, Module Firmware, or ics ATT&CK. Adversaries may install malicious or vulnerable firmware onto modular hardware devices.4license: MITRE ATT&CK Terms of Use apply to ATT&CK-derived content. See h5---67# MITRE ATT&CK T1693.002: Module Firmware89## When to use this skill1011Use this skill when the task involves T1693.002, Module Firmware, 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: T1693.00217- Technique name: Module Firmware18- Type: sub-technique19- ATT&CK URL: https://attack.mitre.org/techniques/T1693/00220- Tactics: impair-process-control, inhibit-response-function, persistence21- Platforms: Not specified22- Required permissions: Not specified23- Effective permissions: Not specified24- Defenses bypassed: Not specified2526## ATT&CK description2728Adversaries may install malicious or vulnerable firmware onto modular hardware devices. Control system devices often contain modular hardware devices. These devices may have their own set of firmware that is separate from the firmware of the main control system equipment.2930This technique is similar to System Firmware, but is conducted on other system components that may not have the same capabilities or level of integrity checking. Although it results in a device re-image, malicious device firmware may provide persistent access to remaining devices.(Citation: Daniel Peck, Dale Peterson January 2009)3132An easy point of access for an adversary is the Ethernet card, which may have its own CPU, RAM, and operating system. The adversary may attack and likely exploit the computer on an Ethernet card. Exploitation of the Ethernet card computer may enable the adversary to accomplish additional attacks, such as the following:(Citation: Daniel Peck, Dale Peterson January 2009)3334* Delayed Attack - The adversary may stage an attack in advance and choose when to launch it, such as at a particularly damaging time.35* Brick the Ethernet Card - Malicious firmware may be programmed to result in an Ethernet card failure, requiring a factory return.36* Random Attack or Failure - The adversary may load malicious firmware onto multiple field devices. Execution of an attack and the time it occurs is generated by a pseudo-random number generator.37* A Field Device Worm - The adversary may choose to identify all field devices of the same model, with the end goal of performing a device-wide compromise.38* Attack Other Cards on the Field Device - Although it is not the most important module in a field device, the Ethernet card is most accessible to the adversary and malware. Compromise of the Ethernet card may provide a more direct route to compromising other modules, such as the CPU module.3940## Agent workflow41421. 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.432. 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.443. 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.454. Produce defensive outputs: prioritize hypotheses, telemetry requirements, detection logic ideas, validation steps, containment guidance, and mitigations.465. Preserve uncertainty: distinguish confirmed evidence, plausible indicators, assumptions, and gaps. Recommend what to collect next.476. 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.4849## Bundled resources5051- `references/technique-profile.json`: machine-readable ATT&CK metadata for this technique.52- `references/detection-and-mitigation.md`: detection notes, telemetry checklist, triage questions, mitigation candidates, and false-positive considerations.53- `references/known-threat-context.md`: ATT&CK relationship context with attribution cautions.54- `templates/detection-brief.md`: detection engineering brief template.55- `templates/hunt-plan.md`: threat hunt plan template.56- `templates/incident-response-note.md`: incident response note template.57- `templates/coverage-assessment.md`: ATT&CK coverage assessment template.58- `scripts/render_brief.py`: local helper that renders a Markdown defensive brief from `technique-profile.json`.59- `assets/output-schema.json`: JSON schema for structured technique analysis outputs.6061To generate a quick brief, run `python scripts/render_brief.py --output brief.md` from inside this skill directory, or adapt the templates directly.6263## Detection guidance6465No ATT&CK detection guidance was present in the source STIX object.6667## Useful telemetry and data sources6869- Not specified in the STIX object.7071## Mitigations to consider7273- Access Management74- Audit75- Boot Integrity76- Code Signing77- Communication Authenticity78- Encrypt Network Traffic79- Encrypt Sensitive Information80- Filter Network Traffic81- Human User Authentication82- Network Allowlists83- Network Segmentation84- Software Process and Device Authentication8586## Known threat context8788Use these examples only as contextual leads, not as proof that an observed event is this technique:8990- No group or software uses relationships were included for this technique in the source STIX bundle.9192## Recommended output pattern9394When responding with this skill, structure the answer as:9596- Assessment: whether the evidence supports this ATT&CK mapping and why.97- Evidence: specific indicators, logs, behaviors, and assumptions.98- Detection: telemetry sources, analytic logic, and tuning considerations.99- Response: containment, eradication, recovery, and validation actions.100- Coverage gaps: missing logs, sensors, controls, or environmental details.101- References: include the ATT&CK URL and any user-provided evidence references.
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