LitterBox - Sandbox Approach For Malware Developers And Red Teamers

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LitterBox – Sandbox Approach For Malware Developers And Red Teamers

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LitterBox – Sandbox Approach For Malware Developers And Red Teamers

January 5, 20254 min read

Your malware’s favorite sandbox – where red teamers come to bury their payloads.

A sandbox environment designed specifically for malware development and payload testing.

This Web Application enables red teamers to validate evasion techniques, assess detection signatures, and test implant behavior before deployment in the field.

Think of it as your personal LitterBox for perfecting your tradecraft without leaving traces on production detection systems.

The platform provides automated analysis through an intuitive web interface, monitoring process behavior and generating comprehensive runtime analysis reports.

This ensures your payloads work as intended before execution in target environments.

Features

Initial Analysis

File identification with multiple hashing algorithms (MD5, SHA256)
Shannon entropy calculation for encryption detection
Advanced file type detection and MIME analysis
Original filename preservation
Upload timestamp tracking

PE File Analysis

For Windows executables (.exe, .dll, .sys):

PE file type detection (PE32/PE32+)
Machine architecture identification
Compilation timestamp analysis
Subsystem classification
Entry point detection
Section enumeration and analysis
Import DLL dependency mapping

Office Document Analysis

For Microsoft Office files (.docx, .xlsx, .doc, .xls, .xlsm, .docm):

Macro detection and extraction
VBA code analysis
Hidden content identification

Analysis Capabilities

Static Analysis Engine

Signature-based detection using industry-standard rulesets
Binary entropy analysis
String extraction and analysis
Pattern matching for suspicious indicators

Dynamic Analysis Engine

Available in two modes:

File Analysis Mode
Process ID (PID) Analysis Mode

Features include:

Behavioral monitoring
Memory region inspection
Process hollowing detection
Injection technique analysis
Sleep pattern monitoring
PE integrity verification

Integrated Tools

Static Analysis Suite

YARA – Pattern matching and signature detection
CheckPlz – AV detection testing

Dynamic Analysis Suite

YARA (memory scanning) – Runtime pattern detection
PE-Sieve – Process and memory inspection
Moneta – Sleep pattern analysis
Patriot – Runtime monitoring
Hunt-Sleeping-Beacons – Beacon behavior analysis

API Reference

File Operations

POST   /upload                          # Upload files for analysis
GET    /analyze/static/<hash>           # Static file analysis
POST   /analyze/dynamic/<hash>          # Dynamic file analysis
POST   /analyze/dynamic/<pid>           # Process analysis
GET    /files                           # Get list of processed files
GET    /file/<hash>/info                # Get file info
GET    /file/<hash>/static              # Get results for file static analysis
GET    /file/<hash>/dynamic             # Get results for file dynamic analysis
DELETE /file/<hash>                     # Delete single analysis

System Management

GET  /health                  # System health and tool status check
POST /cleanup                # Clean analysis artifacts and uploads
POST /validate/<pid>         # Validate process accessibility

Installation

Prerequisites

Python 3.11 or higher
Administrator privileges (required for certain features)
Windows operating system (required for specific analyzers)

Setup Steps

Clone the repository:

git clone https://github.com/BlackSnufkin/LitterBox.git<br>cd LitterBox

Install required dependencies:
```
pip install -r requirements.txt
```

Running LitterBox

python litterbox.py

The web interface will be available at: http://127.0.0.1:1337

Configuration

The config.yml file controls:

Upload directory and allowed extensions
Analysis tool paths and Command options
YARA rule locations
Analysis timeouts and limits

SECURITY WARNINGS

DO NOT USE IN PRODUCTION: This tool is designed for development and testing environments only. Running it in production could expose your systems to serious security risks.
ISOLATED ENVIRONMENT: Only run LitterBox in an isolated, disposable virtual machine or dedicated testing environment.
NO WARRANTY: This software is provided “as is” without any guarantees. Use at your own risk.
LEGAL DISCLAIMER: Only use this tool for authorized testing purposes. Users are responsible for complying with all applicable laws and regulations.