Ursnif - cd.dll [f1a8e6bb]

Tehdit 值lendirmesi

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.

检测到的功能

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

MalwareBazaar 标签

分析说明

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

Ursnif — 恶意软件档案

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

恶意软件类型

Other

编程语言

C++

C2协议

HTTPS

目标系统

Windows

别名 (AKA)

Gozi

技术细节

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.

归因 / 威胁行为者

TA544 (Narwhal Spider), TA551 (Shathak), multiple operators

能力与行为

Zararlı Yazılım Aktivitesi

Kalıcılık Mekanizması

C2 İletişimi

Anti-Analiz

IOC列表 (2 个指标)

IOC — Ursnif 复制

# SHA256 f1a8e6bb2bd7668c5434717ea9582b75b37e5ed3c2ca616acea379c667ba348b # MD5 cd5a07afe0fa9b3a2b680e2d81b5b4e0

类型	值	备注
sha256	f1a8e6bb2bd7668c5434717ea9582b75b37e5ed3c2ca616acea379c667ba348b
md5	cd5a07afe0fa9b3a2b680e2d81b5b4e0

C2服务器 (该家族共有 1 台已记录服务器)

地址	类型	端口	协议	状态	国家
91.92.109.38	ip	8080	HTTP	sinkholed	RU

C2 地址仅来自 KEYDAL 团队人工验证的恶意软件样本。禁止用于商业用途。