SystemBC | Threat Level: medium | Type: Loader

Cryptographic Identifiers

SHA256c08ae3fc4f7db6848f829eb7548530e2522ee3eb60a57b2c38cd1bdc862f5d6f
MD588b7218e0e2ce38dcbb6647aebc1b915
File Typeexe
Size168.5 KB
First Seen2020-09-26
File Name88b7218e0e2ce38dcbb6647aebc1b915.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: c08ae3fc4f7db6848f829eb7548530e2522ee3eb60a57b2c38cd1bdc862f5d6f
  • MD5: 88b7218e0e2ce38dcbb6647aebc1b915

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: c08ae3fc4f7db684"
        threat_level = "medium"
        first_seen = "2020-09-26"
    condition:
        hash.sha256(0, filesize) == "c08ae3fc4f7db6848f829eb7548530e2522ee3eb60a57b2c38cd1bdc862f5d6f"
}

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 c08ae3fc4f7db6848f829eb7548530e2522ee3eb60a57b2c38cd1bdc862f5d6f # MD5 88b7218e0e2ce38dcbb6647aebc1b915
TypeValueNote
sha256 c08ae3fc4f7db6848f829eb7548530e2522ee3eb60a57b2c38cd1bdc862f5d6f Sample:SystemBC
md5 88b7218e0e2ce38dcbb6647aebc1b915 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