SystemBC | Threat Level: medium | Type: Loader

Cryptographic Identifiers

SHA256e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d
MD5e80a1d9a248c337a5d95f09776c0b092
File Typeexe
Size247.0 KB
First Seen2024-07-24
File Name7861180570ECFB48FCCC3E1CFF748974C64E58C31530AEE4F9243AF810200CC3.exe
Tagsexe, SystemBC

Malware Family: SystemBC

SystemBC, SOCKS5 proxy'dir.

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

Threat Indicators (IOC)

  • SHA256: e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d
  • MD5: e80a1d9a248c337a5d95f09776c0b092

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

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: e77eb0d03b445cf7"
        threat_level = "medium"
        first_seen = "2024-07-24"
    condition:
        hash.sha256(0, filesize) == "e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d"
}

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 e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d # MD5 e80a1d9a248c337a5d95f09776c0b092
TypeValueNote
sha256 e77eb0d03b445cf74f20c2614b1135b62da61ecf0d7c48194b71b8f73297272d Sample:SystemBC
md5 e80a1d9a248c337a5d95f09776c0b092 Sample:SystemBC

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
systembcloadermalwaremediumsha256hash-analizi