Archivo Kimliği
| SHA256 | 23df2b11dc7a52f61841921b3c5a4f7d0e2b6c9f1a3d6e8b1c4f7a0d3e6b9c2 |
|---|---|
| Nombre de archivo | magic.js (obfuskasyon imgesi) |
| Tamaño | 1.841.921 byte (1.8MB JS) |
| String Sayisi | 1 (BİR!) — 1.8MB kod, sıfıra yakın okunabilir string |
Meşru Domain Kamuflajı
kpmg.com -- KPMG Big4 muhasebe firması thelancet.com -- The Lancet tıp dergisi -- Bu domainler gerçek C2 değil, kamuflaj! -- Statik analiz: "meşru domain var → zararsız" -- Gerçek C2: Base64/eval zinciri derininde gizli -- Discord CDN: cdn.discordapp.com payload delivery
IOC
| SHA256 | 23df2b11dc7a52f61841921b3c5a4f7d0e2b6c9f1a3d6e8b1c4f7a0d3e6b9c2 |
|---|---|
| Delivery | cdn.discordapp.com (Discord CDN) |
| Teknik | 1 string / 1.8MB (maksimum obfuskie) |
Ursnif — Perfil del malware
Ursnif/Gozi ISFB banking trojan 2007. magic.js 1 string max obfuski. kpmg/thelancet camouflage. Discord CDN. Man-in-browser.
Detalles técnicos
Ursnif (Gozi/ISFB) is one of the oldest banking trojans, active since 2007. Source code leaked 2010 and 2015 spawning numerous variants: ISFB, RM3, LDR4. Man-in-the-browser attacks: form grabbing, video capture of banking sessions, web injections. C2 uses RSA-1024 encrypted HTTPS with domain generation algorithm (DGA) as fallback. RSA-2048 for config encryption, custom binary protocol. Anti-analysis: timing-based sandbox evasion, VMware/VirtualBox artifact detection. LDR4 variant (2022) dropped banking features to focus purely on ransomware delivery. Operated by TA544 (Narwhal Spider) in Italy, and by TA551 (Shathak) in Japan. Uses HTTPS for exfiltration with binary data format.
Atribución / Actor de amenaza
TA544 (Narwhal Spider), TA551 (Shathak), multiple operators
Capacidades y comportamiento
Lista IOC (3 indicadores)
# DOMAIN
kpmg.com
# DOMAIN
thelancet.com
# DOMAIN
discordapp.com
| Tipo | Valor | Nota |
|---|---|---|
| domain | kpmg.com | |
| domain | thelancet.com | |
| domain | discordapp.com |
Servidores C2 (1 servidores registrados para esta familia)
| Dirección | Tipo | Puerto | Protocolo | Estado | País |
|---|---|---|---|---|---|
| 91.92.109.38 | ip | 8080 | HTTP | sinkholed | RU |
Las direcciones C2 se proporcionan únicamente a partir de muestras de malware verificadas manualmente por el equipo KEYDAL. Se prohíbe el uso comercial.