IOC Simulator – prove your security works before attackers prove it doesn't

Stop guessing if your EDR detects ransomware. Test it daily with automated attack scenarios that validate security controls in minutes, not months.

What is IOC Simulator and how does it support continuous validation?

The PREBYTES Indicators of Compromise Simulator is the only Breach and Attack Simulation (BAS) platform powered directly by an active, frontline SIRT team. While traditional tools rely on generic, outdated databases, our simulator feeds on real-time threat intelligence harvested daily from the front lines of the financial sector. Enterprises get instant access to custom, zero-day attack scenarios, combined with a fully open sandbox for internal security teams to design, test, and automate their own custom threat playbooks.

Who uses IOC Simulator

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Banking
& Financial Institutions


Banks implement automated simulations to generate timestamped, verifiable evidence for DORA (Chapter IV) and NIS2 regulatory audits, moving from periodic testing to continuous operational resilience.
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Enterprise SOC
& MSSP


Security Operations Centers eliminate "detection drift" by verifying that SIEM/EDR rules remain effective after system updates, patches, or configuration changes.
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Critical Infrastructure
& Energy


Grid operators validate that air-gapped or segmented EDR/NDR controls fire correctly against APT-level threats without risking production stability.
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Tech
& Cloud Providers


CTOs integrate IOC Simulator into CI/CD pipelines to ensure new infrastructure deployments meet the organization’s security baseline before reaching production.

Why is IOC Simulator safe for controlled attack simulation?

IOC Simulator is an automated platform that generates safe, realistic attack telemetry as proof of your detection capabilities. Unlike manual penetration tests, it is:

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Deterministic
Analysis is triggered at defined intervals (daily, post-patching, or within CI/CD).
Evidence-Based
Supports executive decisions to certify security posture or initiate immediate SOC remediation.
Non-Disruptive
Focused on telemetry generation rather than exploiting system stability.
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What techniques can IOC Simulator simulate?

IOC Simulator uses a modular library of atomic attacker behaviors to build realistic kill-chains. It generates telemetry based on, among other things, endpoint signals (File, Registry, Process creation) and network signals (DNS, TCP/UDP beaconing, URL fetching). All behaviors are mapped directly to MITRE ATT&CK techniques.

Does IOC Simulator clean up artifacts after simulation?

Yes. IOC Simulator relies on an automated autorestore mechanism, not manual cleanup. Tracking created artifacts (files, directories, registry keys) means that once the simulation completes, the agent automatically reverts the changes, leaving the endpoint 100% clean and ready for testing next attack scenario. This helps maintain a clean testing environment between simulation runs.
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When does IOC Simulator indicate that your defenses have failed?

When the simulated attack chain successfully executes without being blocked by the local EDR/Antivirus. IOC Simulator reports a "Success" from the attacker's perspective, providing immediate evidence to the Blue Team that a specific MITRE ATT&CK technique was allowed to run, requiring urgent rule tuning.

When is IOC Simulator used in the security lifecycle?

IOC Simulator is typically used:
  • after changes to SIEM or EDR detection rules,
  • during regression testing of security controls,
  • as part of Purple Team exercises,
  • to validate SOC readiness before audits or assessments.
The goal is to detect gaps in detection coverage before real attackers do.
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How does IOC Simulator work?

Diagram showing how the IOC Simulator works.

Quick and seamless activation

01

Lightweight Agent Integration

IOC Simulator is enabled by running a single, lightweight executable on your mirror endpoints or test labs, fully controllable via headless CLI switches.

02

Agent-based execution model

A lightweight Windows agent is installed on designated mirror or lab endpoints. The agent executes simulation tasks and reports results back to the control panel.

03

Secure and reliable communication

Communication between the agent and the control panel is protected using TLS with additional application-layer encryption (RSA for handshake and AES for data exchange). This ensures integrity and reliability of simulation commands even in environments with SSL inspection.

Agent authorization, secure communication and full control over testing

IOC Simulator uses application-layer encryption (RSA-2048 + AES-256) that authorises agent to be used on tested machine. Every agent is strictly managed and manually activated by organization’s expert. Agent is getting only approved scenarios from server over secured channel to avoid corporate SSL inspection interruption - ensuring 99.9% command delivery even in locked-down environments.

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Supports compliance with DORA, NIS2 & ISO 27001

IOC Simulator supports DORA Chapter IV by providing continuous threat-led penetration testing evidence. It helps organizations meet NIS2 and ISO 27001 risk-management expectations by providing timestamped, verifiable logs of security control validation and reducing the risk of undetected system drift. It generates audit-ready reports showing detection coverage against MITRE ATT&CK techniques - helping organizations demonstrate proactive security validation during regulatory assessments.

How does IOC Simulator differ from typical BAS and Red Team solutions?

The table below compares IOC Simulator with typical breach simulation and penetration testing approaches across the most important technical and business areas.

IOC SIMULATOR (IOCS)

COMPETITOR SOLUTIONS

DELIVERY RELIABILITY (SSL BYPASS)

Proprietary RSA+AES application-layer encryption ensures 99.9% command delivery through strict proxies

Relies on standard HTTPS; frequently blocked by SSL inspection, requiring weeks of firewall whitelisting

COMPLIANCE: GDPR, DORA, NIS2

100% EU-based vendor. Full data sovereignty inside Europe. Zero risk of data leaving the EU

Global cloud hosting. International vendors require complex DPAs; data often processed outside EU

DEPLOYMENT TIME & TIME TO VALUE

Works from day one – deploy lightweight agents in 15 minutes

Requires 3-6 months for full deployment and integration with existing security stack

OPERATIONAL OVERHEAD

True headless CLI support allowing automated execution with self-cleanup (autorestore) - no manual intervention required

Designed as persistent 24/7 background services; difficult to integrate into ephemeral DevOps workflows. Manual Red Team exercises require coordination, scheduling, and cleanup

SYSTEM SAFETY (AUTO-RESTORE)

Automatic artifact cleanup after simulation completion leaves endpoints 100% clean

Often leaves residual data, or runs overly aggressive tests that risk production stability

BUSINESS VALUE

70-85% more affordable (119k PLN/year). Fits mid-market budgets without massive RFP cycles

Extreme costs (400k - 1.5M+ PLN/year) requiring massive budget allocation

CORE TECHNOLOGY

Modular Task-Scenario-Playlist architecture mapped strictly to MITRE ATT&CK

Bloated features (Email, WAF) that customers pay for but rarely use

GOVERNANCE & CONTROL

Explicit agent registration and customer-controlled execution

Tools may allow ad-hoc or uncontrolled actions

BUSINESS VALUE

Does not require complex training and advanced knowledge of offensive security. PREBYTES SIRT experts prepare ready to use scenarios covering real-world attacks

Requires expensive consulting fees for scenario customization and dedicated training sessions

6 key reasons to choose PREBYTES

Key benefits of implementing IOC Simulator

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Continuous Security Validation

Stop annual tests. IOC Simulator automates EDR/SIEM validation for continuous protection.
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Regulatory Audit Evidence

MITRE-mapped reports for DORA/NIS2. Prove continuous resilience, not just annual audits.
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CI/CD Pipeline Validation

DevOps integration: Test Windows builds & GPOs for blind spots in 15 mins before prod.
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70-85% Cost Reduction vs. Manual Red Team

Invest the savings in SOC analyst headcount or additional security tools.
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No Production Impact

Run on any environment or lab VMs. Auto-cleanup removes all artifacts after every test.
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Instant Time-to-Value (15-Minute Deployment)

Skip 6-month BAS deployments. Lightweight agent deploys in minutes with same-day reports.

Frequently asked questions about Indicators of Compromise Simulator (FAQ)

Why is IOC Simulator safe for controlled attack simulation?

The platform allows organizations to execute predefined attack scenarios on designated mirror or lab endpoints and verify whether their SIEM, EDR, NDR, and related security tooling generate the expected telemetry and alerts. Simulations are fully controlled by the organization and are used to assess detection quality, operational readiness, and regression after changes.

All actions are executed only on explicitly registered agents, typically deployed on mirror or lab endpoints. The platform focuses on deterministic execution of simulated attacker behaviors rather than uncontrolled offensive activity, ensuring predictable results and safe operation.

Can IOC Simulator be used to streamline Red Team operations without infrastructure overhead?

Yes. Red Teams use IOC Simulator to model attacker behaviors in a safe and controlled manner, without introducing real malware or uncontrolled exploitation.

Typical Red Team use cases include:

  • Building attack scenarios that represent specific techniques or stages of an attack chain.
  • Simulating adversary behaviors to verify whether expected telemetry is generated.
  • Reproducing known attack patterns to support Purple Team exercises.
  • Validating that simulated actions are executed exactly as defined, enabling consistent test results.

IOC Simulator allows Red Teams to focus on attack logic and sequencing, rather than tool development or infrastructure setup.

How does IOC Simulator empower Blue Teams to maintain high detection hygiene and eliminate security gaps?

Blue Teams use IOC Simulator to validate and improve detection and monitoring capabilities across their security stack.

Typical Blue Team use cases include:

  • Testing SIEM and EDR detection rules against known attack techniques.
  • Verifying that alerts are generated with the correct severity and context.
  • Performing regression testing after rule changes, platform upgrades, or configuration updates.
  • Identifying detection gaps or degraded signals in a controlled environment.

IOC Simulator provides Blue Teams with repeatable evidence of what was executed, helping correlate expected detections with actual system behavior.

How does IOC Simulator transform Purple Teaming from ad-hoc exercises into a scalable security workflow?

Purple Teams use IOC Simulator as a shared execution platform that bridges Red and Blue Team activities.

Typical Purple Team use cases include:

  • Running predefined scenarios agreed upon by both teams.
  • Mapping scenarios to MITRE ATT&CK techniques to assess detection coverage.
  • Iteratively improving detections based on observed results.
  • Establishing repeatable testing workflows that reduce reliance on ad-hoc exercises.

How does IOC Simulator support mandatory resilience testing under DORA and NIS2?

In the 2026 regulatory landscape, "passive defense" is a liability. IOC Simulator provides timestamped, verifiable evidence of your security controls' performance, directly mapped to the MITRE ATT&CK framework. This shifts your compliance posture from periodic "check-the-box" audits to the continuous operational resilience required by DORA Chapter IV. It ensures that when a regulator asks for proof of testing, you have a data-backed audit trail ready in minutes.

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Trusted by organizations around the world

Bank Millennium S.A.
Bank Credit Agricole S.A.
PKO Bank Polski S.A.
Bank Pekao S.A.
Santander Bank Polska S.A.
PayU S.A.
McAfee LLC
Fortinet Inc.
Check Point Software Technologies Ltd.
MicroWorld Technologies Inc.
Intel Corporation
FireEye Inc.
F-Secure Inc.
CSIS Security Group A/S
BNP Paribas S.A.
Raiffeisen Bank Polska S.A.
NSS Labs
Podkarpacki Bank Spółdzielczy
Bank BPS S.A.
Trellix
zondacrypto
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