VShell C2 (also known as VShell) is a c2 framework active since 2024. Go-based cross-platform C2. Key characteristics include: Go-based, cross-platform agents, used by UNC5174 with SNOWLIGHT loader.
Overview & Background
Go-based cross-platform C2. First identified in 2024, this threat is attributed to Chinese eCrime.
Threat Assessment
VShell C2 remains an active threat. Organizations should implement detection rules and monitor for indicators associated with this c2 framework.
- Category: C2 Framework
- Active since: 2024
- Attribution: Chinese eCrime
- Also known as: VShell
Technical Analysis
VShell C2 employs the following capabilities and techniques:
- Go-Based: Core functionality
- Cross-Platform Agents: Core functionality
- Used By Unc5174 With Snowlight Loader: Core functionality
MITRE ATT&CK Mapping
| Tactic | Technique | Usage |
|---|---|---|
| Initial Access | T1566.001 Phishing Attachment | Common delivery vector |
| Execution | T1204.002 Malicious File | User-triggered execution |
| Persistence | T1547.001 Registry Run Keys | Autostart persistence |
| Defense Evasion | T1027 Obfuscated Files | Payload obfuscation |
| C2 | T1071.001 Web Protocols | HTTP/HTTPS C2 |
Detection & Defense
- Endpoint detection: Deploy behavioral detection rules for VShell C2 indicators
- Network monitoring: Monitor for C2 traffic patterns and anomalous connections
- Threat intelligence: Track VShell C2 IOCs and campaign updates
- Security awareness: Train users to recognize phishing and social engineering
- Patch management: Keep systems updated to prevent exploitation
Defend Against VShell C2
Mjolnir Security provides detection and response capabilities against VShell C2 and similar threats.
Threat DetectionIncident ResponseThreat HuntingMDR ServicesThreat Intelligence
- Proactive Threat Hunting Hunt for VShell C2 indicators and TTPs within your environment.
- Threat Intelligence Monitor VShell C2 campaigns and infrastructure changes.
- 24/7 Incident Response Rapid containment and forensic investigation. Call +1 833 403 5875.
Written by: Mjolnir Security | Published: October 11, 2025
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