MITRE ATT&CK T1665: Hide Infrastructure
When to use this skill
Use this skill when the task involves T1665, Hide Infrastructure, enterprise 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 technique.
Technique context
- ATT&CK domain: enterprise
- ATT&CK ID: T1665
- Technique name: Hide Infrastructure
- Type: technique
- ATT&CK URL: https://attack.mitre.org/techniques/T1665
- Tactics: command-and-control
- Platforms: ESXi, Linux, macOS, Network Devices, Windows
- Required permissions: Not specified
- Effective permissions: Not specified
- Defenses bypassed: Not specified
ATT&CK description
Adversaries may manipulate network traffic in order to hide and evade detection of their C2 infrastructure. This can be accomplished by identifying and filtering traffic from defensive tools,(Citation: TA571) masking malicious domains to obfuscate the true destination from both automated scanning tools and security researchers,(Citation: Schema-abuse)(Citation: Facad1ng)(Citation: Browser-updates) and otherwise hiding malicious artifacts to delay discovery and prolong the effectiveness of adversary infrastructure that could otherwise be identified, blocked, or taken down entirely.
C2 networks may include the use of Proxy or VPNs to disguise IP addresses, which can allow adversaries to blend in with normal network traffic and bypass conditional access policies or anti-abuse protections. For example, an adversary may use a virtual private cloud to spoof their IP address to closer align with a victim's IP address ranges. This may also bypass security measures relying on geolocation of the source IP address.(Citation: sysdig)(Citation: Orange Residential Proxies)
Adversaries may also attempt to filter network traffic in order to evade defensive tools in numerous ways, including blocking/redirecting common incident responder or security appliance user agents.(Citation: mod_rewrite)(Citation: SocGholish-update) Filtering traffic based on IP and geo-fencing may also avoid automated sandboxing or researcher activity (i.e., Virtualization/Sandbox Evasion).(Citation: TA571)(Citation: mod_rewrite)
Hiding C2 infrastructure may also be supported by Resource Development activities such as Acquire Infrastructure and Compromise Infrastructure. For example, using widely trusted hosting services or domains such as prominent URL shortening providers or marketing services for C2 networks may enable adversaries to present benign content that later redirects victims to malicious web pages or infrastructure once specific conditions are met.(Citation: StarBlizzard)(Citation: QR-cofense)
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
- No ATT&CK mitigation relationships were present in the source STIX bundle.
Known threat context
Use these examples only as contextual leads, not as proof that an observed event is this technique:
- APT29 (intrusion-set)
- DarkGate (malware)
- JumbledPath (malware)
- Operation Digital Eye (campaign)
- Quad7 Activity (campaign)
- SolarWinds Compromise (campaign)
- UPSTYLE (malware)
- ZIRCONIUM (intrusion-set)
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.
ATT&CK contributors
- Diyar Saadi Ali
- Eliav Livneh
- Hen Porcilan
- Matt Mullins
1---2name: attack-ent-t1665-hide-infrastructure3description: Analyze MITRE ATT&CK T1665 Hide Infrastructure in the enterprise matrix. Use for TTP triage, detection engineering, hunting, defensive emulation planning, mitigations, incident response mapping, ATT&CK coverage, or questions mentioning T1665, Hide Infrastructure, or enterprise ATT&CK. Adversaries may manipulate network traffic in order to hide and evade detection of their C2 infrastructure.4license: MITRE ATT&CK Terms of Use apply to ATT&CK-derived content. See h5---67# MITRE ATT&CK T1665: Hide Infrastructure89## When to use this skill1011Use this skill when the task involves T1665, Hide Infrastructure, enterprise 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 technique.1213## Technique context1415- ATT&CK domain: enterprise16- ATT&CK ID: T166517- Technique name: Hide Infrastructure18- Type: technique19- ATT&CK URL: https://attack.mitre.org/techniques/T166520- Tactics: command-and-control21- Platforms: ESXi, Linux, macOS, Network Devices, Windows22- Required permissions: Not specified23- Effective permissions: Not specified24- Defenses bypassed: Not specified2526## ATT&CK description2728Adversaries may manipulate network traffic in order to hide and evade detection of their C2 infrastructure. This can be accomplished by identifying and filtering traffic from defensive tools,(Citation: TA571) masking malicious domains to obfuscate the true destination from both automated scanning tools and security researchers,(Citation: Schema-abuse)(Citation: Facad1ng)(Citation: Browser-updates) and otherwise hiding malicious artifacts to delay discovery and prolong the effectiveness of adversary infrastructure that could otherwise be identified, blocked, or taken down entirely.2930C2 networks may include the use of [Proxy](https://attack.mitre.org/techniques/T1090) or VPNs to disguise IP addresses, which can allow adversaries to blend in with normal network traffic and bypass conditional access policies or anti-abuse protections. For example, an adversary may use a virtual private cloud to spoof their IP address to closer align with a victim's IP address ranges. This may also bypass security measures relying on geolocation of the source IP address.(Citation: sysdig)(Citation: Orange Residential Proxies)3132Adversaries may also attempt to filter network traffic in order to evade defensive tools in numerous ways, including blocking/redirecting common incident responder or security appliance user agents.(Citation: mod_rewrite)(Citation: SocGholish-update) Filtering traffic based on IP and geo-fencing may also avoid automated sandboxing or researcher activity (i.e., [Virtualization/Sandbox Evasion](https://attack.mitre.org/techniques/T1497)).(Citation: TA571)(Citation: mod_rewrite)3334Hiding C2 infrastructure may also be supported by [Resource Development](https://attack.mitre.org/tactics/TA0042) activities such as [Acquire Infrastructure](https://attack.mitre.org/techniques/T1583) and [Compromise Infrastructure](https://attack.mitre.org/techniques/T1584). For example, using widely trusted hosting services or domains such as prominent URL shortening providers or marketing services for C2 networks may enable adversaries to present benign content that later redirects victims to malicious web pages or infrastructure once specific conditions are met.(Citation: StarBlizzard)(Citation: QR-cofense)3536## Agent workflow37381. 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.392. 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.403. 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.414. Produce defensive outputs: prioritize hypotheses, telemetry requirements, detection logic ideas, validation steps, containment guidance, and mitigations.425. Preserve uncertainty: distinguish confirmed evidence, plausible indicators, assumptions, and gaps. Recommend what to collect next.436. 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.4445## Bundled resources4647- `references/technique-profile.json`: machine-readable ATT&CK metadata for this technique.48- `references/detection-and-mitigation.md`: detection notes, telemetry checklist, triage questions, mitigation candidates, and false-positive considerations.49- `references/known-threat-context.md`: ATT&CK relationship context with attribution cautions.50- `templates/detection-brief.md`: detection engineering brief template.51- `templates/hunt-plan.md`: threat hunt plan template.52- `templates/incident-response-note.md`: incident response note template.53- `templates/coverage-assessment.md`: ATT&CK coverage assessment template.54- `scripts/render_brief.py`: local helper that renders a Markdown defensive brief from `technique-profile.json`.55- `assets/output-schema.json`: JSON schema for structured technique analysis outputs.5657To generate a quick brief, run `python scripts/render_brief.py --output brief.md` from inside this skill directory, or adapt the templates directly.5859## Detection guidance6061No ATT&CK detection guidance was present in the source STIX object.6263## Useful telemetry and data sources6465- Not specified in the STIX object.6667## Mitigations to consider6869- No ATT&CK mitigation relationships were present in the source STIX bundle.7071## Known threat context7273Use these examples only as contextual leads, not as proof that an observed event is this technique:7475- APT29 (intrusion-set)76- DarkGate (malware)77- JumbledPath (malware)78- Operation Digital Eye (campaign)79- Quad7 Activity (campaign)80- SolarWinds Compromise (campaign)81- UPSTYLE (malware)82- ZIRCONIUM (intrusion-set)8384## Recommended output pattern8586When responding with this skill, structure the answer as:8788- Assessment: whether the evidence supports this ATT&CK mapping and why.89- Evidence: specific indicators, logs, behaviors, and assumptions.90- Detection: telemetry sources, analytic logic, and tuning considerations.91- Response: containment, eradication, recovery, and validation actions.92- Coverage gaps: missing logs, sensors, controls, or environmental details.93- References: include the ATT&CK URL and any user-provided evidence references.9495## ATT&CK contributors9697- Diyar Saadi Ali98- Eliav Livneh99- Hen Porcilan100- Matt Mullins
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