BruteRatel | Threat Level: critical | Type: C2 Framework

Cryptographic Identifiers

SHA256ec3ca0877e599ae9c40cbcec51a9a4718114e33d9e2d9d8c72f5f24d7cebdcbf
MD527708977fc83f3b70177d6cf68900eba
File Typemsi
Size4660.5 KB
First Seen2025-02-20
File Namecalma.msi
TagsBruteRatel, BruteRatelC4, Latrodectus, msi, signed

Malware Family: BruteRatel

Brute Ratel, EDR atlatmak için tasarlandı.

TypeC2 Framework
Programming LanguageC
Target PlatformWindows
C2 ProtocolHTTPS
PurposeEDR atlatma C2
First Seen Year2021
AliasesBRC4

Threat Indicators (IOC)

  • SHA256: ec3ca0877e599ae9c40cbcec51a9a4718114e33d9e2d9d8c72f5f24d7cebdcbf
  • MD5: 27708977fc83f3b70177d6cf68900eba

You can verify all hash values of this sample on VirusTotal.

System Cleanup Guide

  1. Disconnect the system from the network — unplug ethernet, disable Wi-Fi
  2. Terminate suspicious processes from Task Manager
  3. Run a full system scan with Malwarebytes or Kaspersky
  4. HKCU\Software\Microsoft\Windows\CurrentVersion\Run kayıtlarını kontrol edin
  5. Review newly created tasks in Task Scheduler
  6. Change all your account passwords from a clean device
  7. Gerekirse Windows'u yeniden yükleyin ve verilerinizi temiz bir yedeğe geri alın

YARA Rule Hints

rule BruteRatel_SHA256 {
    meta:
        description = "BruteRatel sample: ec3ca0877e599ae9"
        threat_level = "critical"
        first_seen = "2025-02-20"
    condition:
        hash.sha256(0, filesize) == "ec3ca0877e599ae9c40cbcec51a9a4718114e33d9e2d9d8c72f5f24d7cebdcbf"
}

BruteRatel — Malware Profile

Brute Ratel C4 red team C2. steam_monitor DLL injection. TJC20MG session token. Registry persistence.

Malware Type
C2Framework
Programming Language
C
C2 Protocol
HTTPS
Target Systems
Windows
Also Known As (AKA)
BRC4

Capabilities & Behavior

Post-Exploitation
Lateral Movement
Mimikatz Entegrasyonu
Process Injection
Payload Staging
Domain Fronting
Covert Channel C2
Beacon İletişimi

IOC List (2 indicators)

IOC — BruteRatel
# SHA256 ec3ca0877e599ae9c40cbcec51a9a4718114e33d9e2d9d8c72f5f24d7cebdcbf # MD5 27708977fc83f3b70177d6cf68900eba
TypeValueNote
sha256 ec3ca0877e599ae9c40cbcec51a9a4718114e33d9e2d9d8c72f5f24d7cebdcbf Sample:BruteRatel
md5 27708977fc83f3b70177d6cf68900eba Sample:BruteRatel
Tags
bruteratelc2 frameworkmalwarecriticalsha256hash-analizi