SystemBC | Threat Level: medium | Type: Loader

Cryptographic Identifiers

SHA2567eb6fefdb0399a3418a6c375f436e1a4ce52f5c783baa7c5dc92b3921e3fd91e
MD53db26170aa5c06b54c8d60374f59251f
File Typedll
Size16.5 KB
First Seen2024-02-24
File Name3db26170aa5c06b54c8d60374f59251f.bin.dll
Tagsdll, 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: 7eb6fefdb0399a3418a6c375f436e1a4ce52f5c783baa7c5dc92b3921e3fd91e
  • MD5: 3db26170aa5c06b54c8d60374f59251f

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: 7eb6fefdb0399a34"
        threat_level = "medium"
        first_seen = "2024-02-24"
    condition:
        hash.sha256(0, filesize) == "7eb6fefdb0399a3418a6c375f436e1a4ce52f5c783baa7c5dc92b3921e3fd91e"
}

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 7eb6fefdb0399a3418a6c375f436e1a4ce52f5c783baa7c5dc92b3921e3fd91e # MD5 3db26170aa5c06b54c8d60374f59251f
TypeValueNote
sha256 7eb6fefdb0399a3418a6c375f436e1a4ce52f5c783baa7c5dc92b3921e3fd91e
md5 3db26170aa5c06b54c8d60374f59251f

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