[NEW] SpecterInsight 6.0.0⚡Free .NET C2 | Evasion Pipeline | ELK Analytics⚡

Installation Manual

https://practicalsecurityanalytics.com/s...tallation/

ARCHITECTURE & FEATURES

* C2 Server

The C2 server is written in .NET and is cross-platform. It provides a multi-threaded Web API to manage Specter implants, handle data storage, perform data enrichment, and generate payloads.

• Multi-User Support: Collaborative C2 server capabilities.

• OS Support: Compatible with Windows 10+ and Linux.

• Listeners & Protocols: Supports multiple listener types and protocols.

• Unique Profiles: Generates unique C2 profiles for each implant build.

• Certificate Management: Upload, store, or generate SSL/TLS certificates (supports Let's Encrypt).

• Data Management: Manages exfiltrated files.

• On-Demand Updates: Dynamically update products and SpecterScripts.

• Evasion Pipeline: Implements detection-resistant payload obfuscation.

* Implants (Specters)

The core implant is a .NET 2.0+ compatible binary with a built-in PowerShell 2.0+ interpreter. It comes with various droppers designed to load the implant on target systems using different defense evasion techniques.

• OS Support: Compatible with Windows Vista+ and Linux.

• Environment: Supports .NET 2.0+ and PowerShell 2.0+.

• Communication: Beacon-style communications over HTTP/S.

• Object-Oriented Output: Serializes command output into objects across the C2 channel for easier parsing and analysis.

• Concurrency: Supports asynchronous background commands to run multiple tasks simultaneously.

• File Transfer: Upload and download files tunneled through the C2 channel.

• Defense Evasion:

           AMSI bypass

           PowerShell logging suppression

           Multiple process injection techniques

           Various persistence mechanisms

• Modular Architecture: Load and execute arbitrary .NET assemblies directly in memory.

* Graphical User Interface (GUI)

SpecterInsight features a fully cross-platform GUI built on AvaloniaUI and SignalR, providing real-time C2 management. The interface is clean and modern, supporting plaintext, JSON, and tabular output formats.

• OS Support: Compatible with Windows 10+ and Linux.

• Security: Uses HTTPS with username/password authentication.

• Management:

        Generate implants and configure listeners.

        Manage SSL/TLS certificates (with Let's Encrypt support).

        View exfiltrated files.

• Operational Awareness:

       Countdown timers showing the next callback for each active session.

       Real-time updates and output tracking.

       Command history log with support for text, JSON, and table views.

• Scripting Integration: Build SpecterScripts directly in the UI, with quick search and insertion features for scripts and documentation.

* Analytics & ELK Integration

The core implant serializes command output into JSON, automatically enriches the data, and forwards it to a pre-configured ELK (Elastic) stack for analysis via built-in dashboards.

• Data Enrichment: Automatically appends GeoIP details to command outputs.

• Ingestion: Collects event logs and command outputs and sends them to Elasticsearch.

• Visualization:

        Built-in Kibana dashboards.

        Generates network graphs based on host or network output.

        Tracks all credential harvesting and persistence deployments.

        Monitors lateral movement events.

• Remediation: Generates cleanup/uninstall scripts for every deployed persistence technique.

• Framework Mapping: Maps events and commands directly to the MITRE ATT&CK framework.

CORE CAPABILITIES

* SpecterScripts

SpecterInsight includes pre-built TTPs (Tactics, Techniques, and Procedures) covering lateral movement, C2, discovery, reconnaissance, defense evasion, persistence, and exfiltration.

• Pre-built Scripts: 110

* Scripts & Filters

SpecterScripts are PowerShell scripts used to control deployed Specters. The implants feature built-in cmdlets that allow operators to perform advanced actions, such as loading modules from the C2, exfiltrating data, or changing configurations.

* Elasticsearch Integration

Because Specter implant outputs are structured JSON fields, they integrate cleanly with Elasticsearch. The pre-configured dashboards cover operations, reconnaissance, and reporting.

• Pre-configured Dashboards: 6
• Pre-configured Visualizations: 32

Included Categories:
• Command and Control (C2)
• Network Discovery
• Persistence (including detailed breakdowns)
• Infrastructure
• Credentials

The dashboards provide a chronological timeline of Specter implant events (such as registration, callbacks, and result uploads) and visualize global access points using IP geolocation.

* Session & Interface Management

• Sessions Page: Displays critical information for active or archived sessions, including host identifiers, hostnames, domains, usernames, architecture, and the countdown to the next callback.

* Operator Interface

• Supports JSON and plaintext command outputs.

• Maintains command history and provides detailed error logging.

• Includes built-in TTP lookup and documentation.

• The command console accepts raw PowerShell without requiring character escaping.

* Defense Evasion

SpecterInsight integrates multiple evasion techniques to provide a safer execution environment during engagements:

• AMSI and logging bypasses.

• Integrated PowerShell obfuscation tools and multiple PowerShell cradles.

• Integrated C# obfuscator.

• Multiple process injection techniques.

• Payload generation via HTTP endpoints.

• Support for C# Native AOT compilation and obfuscation.

• Ability to integrate custom payloads into the generation pipeline.

* Payload Generation Pipeline

Operators can write scripts to define obfuscated .NET and PowerShell payloads. When the pipeline script is triggered, it generates a new obfuscated payload utilizing randomized defense evasion techniques, templates, and obfuscation methods.

I'll share more useful tools in my upcoming posts.

This is a bump!