SystemBC | Threat Level: medium | Type: Loader

Cryptographic Identifiers

SHA25627d9d7fc6b5d42e5fe44d6aa9d3b6b61027a2e5902302d8ee5c8f759f57399f1
MD59f6d708b9cf047cbdded440fa9e9c417
File Typeexe
Size14793.5 KB
First Seen2025-05-28
File NameVoicemod Crack Setup.exe
Tagsexe, SystemBC

Malware Family: SystemBC

SystemBC, SOCKS5 proxy ve C2 dropper'dır.

TypeLoader
Programming LanguageC++
Target PlatformWindows
C2 ProtocolHTTPS
PurposeSOCKS5 proxy loader
First Seen Year2019
AliasesCoroxy

Threat Indicators (IOC)

  • SHA256: 27d9d7fc6b5d42e5fe44d6aa9d3b6b61027a2e5902302d8ee5c8f759f57399f1
  • MD5: 9f6d708b9cf047cbdded440fa9e9c417

System Cleanup Guide

  1. Disconnect the system from the network — the loader may be downloading more malware
  2. Analyze every downloaded payload
  3. Inspect all network traffic and cut suspicious connections
  4. Run a full antivirus scan
  5. Consider reimaging the system

YARA Rule Hints

rule SystemBC_SHA256 {
    meta:
        description = "SystemBC sample: 27d9d7fc6b5d42e5"
        threat_level = "medium"
        first_seen = "2025-05-28"
    condition:
        hash.sha256(0, filesize) == "27d9d7fc6b5d42e5fe44d6aa9d3b6b61027a2e5902302d8ee5c8f759f57399f1"
}

SystemBC — Malware Profile

SystemBC proxy botnet. Embedded TLS private key BEGIN/END PRIVATE KEY PEM. Tor SOCKS5 proxy tunnel. Used by Ryuk/Conti/DoppelPaymer ransomware for C2 tunneling.

Malware Type
Loader
Programming Language
C++
C2 Protocol
HTTPS
Target Systems
Windows
Also Known As (AKA)
Coroxy

Technical Details

Backdoor ailesi: TCP/HTTP C2, gizli uzak erisim, kalicilik mekanizmasi (servis/Registry), shell komutu calistirma, dosya transfer, anti-forensic teknikleri

Capabilities & Behavior

Payload İndirme
Süreç Enjeksiyonu
Modüler Mimari
Kimlik Bilgisi Hırsızlığı
Yanal Hareket
Kalıcılık
Anti-VM/Sandbox
İkincil Payload Dağıtımı

IOC List (2 indicators)

IOC — SystemBC
# SHA256 27d9d7fc6b5d42e5fe44d6aa9d3b6b61027a2e5902302d8ee5c8f759f57399f1 # MD5 9f6d708b9cf047cbdded440fa9e9c417
TypeValueNote
sha256 27d9d7fc6b5d42e5fe44d6aa9d3b6b61027a2e5902302d8ee5c8f759f57399f1
md5 9f6d708b9cf047cbdded440fa9e9c417

C2 Servers (1 recorded servers for this family)

Address Type Port Protocol Status Country
134.255.218.162 ip 4001 TCP inactive LV

C2 addresses are provided only from malware samples manually verified by the KEYDAL team. Commercial use is prohibited.

Tags
systembcloadermalwaremediumsha256analizzenginleştirilmiş