Ursnif - cd.dll [f1a8e6bb]

Tehdit Valorlendirmesi

Bu ornek, hedef sisteme ek zararlı yazılım yuklemek amacıyla tasarlanmis moduler bir yukleyici (loader) olarak tespit edilmistir. Bankacılık trojanları, fidye yazılımları veya diger ikinci asama yukler indirebilmektedir.

Capacidades detectadas

• Payload Indirme
• Surec Enjeksiyonu
• Kalicilik
• Anti-Analiz
• Sifrelenmis Iletisim

Etiquetas de MalwareBazaar

Nota de análisis

Bu ornek Ursnif ailesine ait ve MalwareBazaar platformundan alınmıstır. KEYDAL Guvenlik Arastirmaları tarafından metadata analizi gerceklestirilmis ve IOC veritabanına eklenmistir.

Ursnif — Perfil del malware

Ursnif/Gozi ISFB banking trojan 2007. magic.js 1 string max obfuski. kpmg/thelancet camouflage. Discord CDN. Man-in-browser.

Tipo de malware

Other

Lenguaje de programación

C++

Protocolo C2

HTTPS

Sistemas objetivo

Windows

También conocido como (AKA)

Gozi

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

Zararlı Yazılım Aktivitesi

Kalıcılık Mekanizması

C2 İletişimi

Anti-Analiz

Lista IOC (2 indicadores)

IOC — Ursnif Copiar

# SHA256 f1a8e6bb2bd7668c5434717ea9582b75b37e5ed3c2ca616acea379c667ba348b # MD5 cd5a07afe0fa9b3a2b680e2d81b5b4e0

Tipo	Valor	Nota
sha256	f1a8e6bb2bd7668c5434717ea9582b75b37e5ed3c2ca616acea379c667ba348b
md5	cd5a07afe0fa9b3a2b680e2d81b5b4e0

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.