SystemBC | Threat Level: medium | Type: Loader
Cryptographic Identifiers
| SHA256 | 4c9b94a436c517923a69b14f4cdf6324bc84ca5b121b04770665d82ed0989f7d |
|---|---|
| MD5 | 6d1ddcf3849b1691b30ec631dd285ae1 |
| File Type | exe |
| Size | 388.5 KB |
| First Seen | 2021-07-06 |
| File Name | 6d1ddcf3849b1691b30ec631dd285ae1.exe |
| Tags | exe, SystemBC |
Malware Family: SystemBC
SystemBC, SOCKS5 proxy'dir.
| Type | Loader |
|---|---|
| Programming Language | C++ |
| Target Platform | Windows |
| C2 Protocol | HTTPS |
| Purpose | SOCKS5 proxy |
| First Seen Year | 2019 |
| Aliases | Coroxy |
Threat Indicators (IOC)
- SHA256:
4c9b94a436c517923a69b14f4cdf6324bc84ca5b121b04770665d82ed0989f7d - MD5:
6d1ddcf3849b1691b30ec631dd285ae1
You can verify all hash values of this sample on VirusTotal.
System Cleanup Guide
- Disconnect the system from the network — the loader may be downloading more malware
- Analyze every downloaded payload
- Inspect all network traffic and cut suspicious connections
- Run a full antivirus scan
- Consider reimaging the system
YARA Rule Hints
rule SystemBC_SHA256 {
meta:
description = "SystemBC sample: 4c9b94a436c51792"
threat_level = "medium"
first_seen = "2021-07-06"
condition:
hash.sha256(0, filesize) == "4c9b94a436c517923a69b14f4cdf6324bc84ca5b121b04770665d82ed0989f7d"
}
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
4c9b94a436c517923a69b14f4cdf6324bc84ca5b121b04770665d82ed0989f7d
# MD5
6d1ddcf3849b1691b30ec631dd285ae1
| Type | Value | Note |
|---|---|---|
| sha256 | 4c9b94a436c517923a69b14f4cdf6324bc84ca5b121b04770665d82ed0989f7d | Sample:SystemBC |
| md5 | 6d1ddcf3849b1691b30ec631dd285ae1 | 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.