Sliver C2 (also known as Sliver) is a c2 framework active since 2020. BishopFox open-source C2. Key characteristics include: Go implants, mTLS/WireGuard/DNS C2, multiplayer, replacing Cobalt Strike, used by APT29.
Overview & Background
BishopFox open-source C2. First identified in 2020, this threat is attributed to BishopFox (open source).
Threat Assessment
Sliver C2 remains an active threat. Organizations should implement detection rules and monitor for indicators associated with this c2 framework.
- Category: C2 Framework
- Active since: 2020
- Attribution: BishopFox (open source)
- Also known as: Sliver
Technical Analysis
Sliver C2 employs the following capabilities and techniques:
- Go Implants: Core functionality
- Mtls/Wireguard/Dns C2: Core functionality
- Multiplayer: Core functionality
- Replacing Cobalt Strike: Core functionality
- Used By Apt29: 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 Sliver C2 indicators
- Network monitoring: Monitor for C2 traffic patterns and anomalous connections
- Threat intelligence: Track Sliver 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 Sliver C2
Mjolnir Security provides detection and response capabilities against Sliver C2 and similar threats.
Threat DetectionIncident ResponseThreat HuntingMDR ServicesThreat Intelligence
- Proactive Threat Hunting Hunt for Sliver C2 indicators and TTPs within your environment.
- Threat Intelligence Monitor Sliver 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 16, 2025
Stay ahead of emerging threats. Get notified when we publish new intelligence reports and advisories.
Subscribe to Alerts