Skuggaheimar/Threat Intelligence/Brute Ratel C4
BRUTE RATEL C4
BRC4
C2 FRAMEWORK
DARK VORTEX / C
Threat IntelligenceMalwareOctober 31, 2025•15 min read

Brute Ratel C4: Threat Intelligence Profile

Commercial adversary simulation framework

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Brute Ratel C4 (also known as BRc4, Brute Ratel) is a c2 framework active since 2020. Commercial adversary simulation framework. Key characteristics include: badger payloads, EDR evasion, syscall-only, $2500/yr, cracked copies abused by ALPHV/BlackCat.

Overview & Background

Commercial adversary simulation framework. First identified in 2020, this threat is attributed to Dark Vortex / Chetan Nayak.

Threat Assessment

Brute Ratel C4 remains an active threat. Organizations should implement detection rules and monitor for indicators associated with this c2 framework.

Technical Analysis

Brute Ratel C4 employs the following capabilities and techniques:

MITRE ATT&CK Mapping

TacticTechniqueUsage
Initial AccessT1566.001 Phishing AttachmentCommon delivery vector
ExecutionT1204.002 Malicious FileUser-triggered execution
PersistenceT1547.001 Registry Run KeysAutostart persistence
Defense EvasionT1027 Obfuscated FilesPayload obfuscation
C2T1071.001 Web ProtocolsHTTP/HTTPS C2

Detection & Defense

Defend Against Brute Ratel C4

Mjolnir Security provides detection and response capabilities against Brute Ratel C4 and similar threats.

Threat DetectionIncident ResponseThreat HuntingMDR ServicesThreat Intelligence
  • Proactive Threat Hunting Hunt for Brute Ratel C4 indicators and TTPs within your environment.
  • Threat Intelligence Monitor Brute Ratel C4 campaigns and infrastructure changes.
  • 24/7 Incident Response Rapid containment and forensic investigation. Call +1 833 403 5875.
Written by: Mjolnir Security  |  Published: October 31, 2025
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