Full Report
This blog post introduces an addition to the red teamers’ toolkit called “SharpParty” – a C# implementation of the injection techniques dubbed “PoolParty”.
Analysis Summary
# Tool/Technique: SharpParty
## Overview
SharpParty is a C# implementation of process injection techniques, specifically based on the foundational work of "PoolParty." It is designed to be used by red teams to test security controls, particularly against Anti-Virus (AV) and Endpoint Detection and Response (EDR) products.
## Technical Details
- Type: Tool
- Platform: Windows (Implied by process injection context)
- Capabilities: Implements C# process injection techniques derived from PoolParty, aiming to test EDR efficacy.
- First Seen: November 11, 2025 (Date of blog post publication, marking its introduction/open-sourcing).
## MITRE ATT&CK Mapping
The primary function of SharpParty is process injection, which maps to:
- **TA0005 - Defense Evasion**
- **T1055 - Process Injection**
## Functionality
### Core Capabilities
- Provides a C# implementation of process injection methods originally explored in "PoolParty."
- Acts as a security testing tool for red teams.
### Advanced Features
- The goal mentioned is to add more injection variants and improve efficacy against EDR products over time. (Specific advanced features beyond basic C# injection are not detailed in the provided excerpt, but the focus is on evasion capability).
## Indicators of Compromise
*Note: As this is an offensive tool release, no active malicious Indicators of Compromise (IoCs) are provided or applicable in the context of the article excerpt.*
- File Hashes: N/A
- File Names: N/A
- Registry Keys: N/A
- Network Indicators: N/A
- Behavioral Indicators: Process injection, likely involving memory allocation and execution within a spoofed/target process.
## Associated Threat Actors
The tool is released for the security community (red teaming/researchers). No specific threat actor groups are explicitly stated to be using this tool yet, though it builds upon research motivated by evasion requirements.
## Detection Methods
*Note: Since this is an offensive tool, detection engineering is often backward-looking based on implemented methods.*
- **Signature-based detection:** Signatures targeting the specific C# code patterns or known assembly/shellcode if the injection payload is standardized.
- **Behavioral detection:** Monitoring for standard process injection behaviors, such as:
- Calls to Windows API functions related to remote thread creation or process memory manipulation (e.g., `WriteProcessMemory`, `CreateRemoteThread`).
- Attempts to allocate executable memory regions in remote processes.
## Mitigation Strategies
- **Prevention measures:** Implementing robust EDR/AV solutions capable of detecting post-exploitation techniques like process injection.
- **Hardening recommendations:** Applying application control policies and ensuring least privilege to limit which processes can be targeted for injection.
## Related Tools/Techniques
- **PoolParty:** The original research or framework upon which SharpParty is based.
- General C# based offensive frameworks and loaders.