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Yellowhak

We simulate advanced adversaries, real APT tactics, and authentic malware to validate your organization's resilience under realistic conditions.

Our Mission

We protect your organization by replicating exactly how the most advanced attackers operate.

We don't do theoretical tests. We validate your defenses through real, controlled, safe, and measurable attacks.

"If you want to stop real attackers, you must train against them."

What We Do

[01]Adversary Emulation

Precise simulations based on real TTPs from known APT groups.

[02]Real Malware Simulation

Use of authentic modified malware for controlled operations in secure environments.

[03]APT Campaign Replication

We model complete campaigns: infiltration, persistence, lateral movement, and exfiltration.

[04]Red & Purple Team Operations

Multidimensional attacks to validate SOC processes, detection, and response.

[05]Breach & Attack Simulation (BAS)

Advanced and continuous automation for constant risk measurement.

[06]Detection Engineering Laboratory

We validate that your rules, correlations, and alerts work in real scenarios.

Why Adversary Emulation

Detect what traditional pentests miss

Unlike standard tests, we replicate real behavior of persistent attackers.

Measure resilience end-to-end

We validate detection, response, containment, and recovery.

Reduce breach impact & exposure window

We discover breaches that automated tools cannot see.

Enhance SOC maturity

We train the team in realistic and verifiable scenarios.

Methodology — How We Operate

1
STEP 01

Advanced reconnaissance

Intelligence gathering to build precise attacker models.

2
STEP 02

Adversary emulation

Tactics, techniques, and procedures based on MITRE ATT&CK, CTI, and internal research.

3
STEP 03

Controlled attack execution

With real malware, safe payloads, and isolated operations.

4
STEP 04

Detection and response evaluation

Including SIEM, EDR, XDR, firewall monitoring, correlation, and alerts.

5
STEP 05

Strategic + technical report

With prioritized recommendations, impacts, exploitation routes, and mitigation roadmap.

Capabilities — Deep Technical Abilities

Malware Simulation

  • Safe ransomware (without destructive encryption)
  • Loaders, droppers, and backdoors
  • C2 frameworks (custom & open-source)
  • EDR/AV evasion
  • Obfuscation / Packing / VM-escape (simulation, not real)

APT Simulation

  • Models based on groups: APT28, APT29, Lazarus, FIN7, TA505
  • Complete campaign simulation
  • Advanced persistence (registry, scheduled tasks, WMI, kernel-level)
  • Silent exfiltration
  • Lateral movement: RDP, PsExec, WinRM, Kerberoasting, etc.

Use Cases

APT resilience assessment

EDR/XDR validation

SOC maturity

Complete defensive audit

Zero Trust validation

Pre-regulatory audit testing

Critical infrastructure protection

Incident response testing (IR readiness testing)

Case Studies

CASE STUDY 01

Banking Sector (LATAM)

Detection improved by +62%

CASE STUDY 02

Critical Infrastructure

Identification of critical lateralization point

CASE STUDY 03

Global SaaS Company

Detection time reduction from 24h to 3h

Trust & Compliance

Operational Standards

  • 100% controlled operations
  • Strict NDA contracts
  • Executive and technical reports
  • Secure laboratories

Certifications & Standards

  • OSCP, OSEP, CRTP, CRTO, CISSP, CEH, and more
  • MITRE ATT&CK alignment
  • NIST 800-53, NIST CSF
  • ISO 27001

About Us

We are a team of experts in Red Teaming, malware development, threat intelligence, and advanced cyber defense.

We have worked in critical sectors: banking, energy, telecommunications, and global SaaS. Our experience allows us to understand both the attacker's and the defender's perspective, creating precise and valuable simulations.

Ready to test your real resilience?

Request an assessment and discover how your defenses perform against real-world threats.