Kriptografik Tanımlayıcılar
| SHA256 | 4f38f1e0e4d1a7b0ee3e98bf9eb766bad6bddbe0ff43af23d28728f6195f109f |
|---|---|
| MD5 | 2ca22133e944c477c5a3c4497c1e75ee |
| Dosya Türü | exe |
| Boyut | 230.0 KB |
| İlk Görülme | 2023-01-18 |
| Dosya Adı | Informazion.exe |
| Etiketler | agenziaentrate, exe, Gozi, isfb, Ursnif |
Malware Ailesi: Ursnif
Ursnif, eski trojan'dır.
| Tür | Banking Trojan |
|---|---|
| Programlama Dili | C++ |
| Hedef Platform | Windows |
| C2 Protokolü | HTTPS |
| Amaç | Bankacılık trojanı |
| İlk Görülen Yıl | 2007 |
| Diğer İsimler | Gozi |
Tehdit Göstergeleri (IOC)
- SHA256:
4f38f1e0e4d1a7b0ee3e98bf9eb766bad6bddbe0ff43af23d28728f6195f109f - MD5:
2ca22133e944c477c5a3c4497c1e75ee
Bu örneğin tüm hash değerlerini VirusTotal üzerinde doğrulayabilirsiniz.
Sistem Temizleme Rehberi
- Sistemi ağdan ayırın — ethernet çıkarın, Wi-Fi devre dışı bırakın
- Görev Yöneticisi'nden şüpheli process'leri sonlandırın
- Malwarebytes veya Kaspersky ile tam sistem taraması yapın
- HKCU\Software\Microsoft\Windows\CurrentVersion\Run kayıtlarını kontrol edin
- Yeni oluşturulan görevleri Task Scheduler'dan inceleyin
- Tüm hesap şifrelerinizi güvenli bir cihazdan değiştirin
- Gerekirse Windows'u yeniden yükleyin ve verilerinizi temiz bir yedeğe geri alın
YARA Kuralı İpuçları
rule Ursnif_SHA256 {
meta:
description = "Ursnif sample: 4f38f1e0e4d1a7b0"
threat_level = "high"
first_seen = "2023-01-18"
condition:
hash.sha256(0, filesize) == "4f38f1e0e4d1a7b0ee3e98bf9eb766bad6bddbe0ff43af23d28728f6195f109f"
}
Ursnif — Malware Profile
Ursnif/Gozi ISFB banking trojan 2007. magic.js 1 string max obfuski. kpmg/thelancet camouflage. Discord CDN. Man-in-browser.
Technical Details
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.
Attribution / Threat Actor
TA544 (Narwhal Spider), TA551 (Shathak), multiple operators
Capabilities & Behavior
IOC List (2 indicators)
# SHA256
4f38f1e0e4d1a7b0ee3e98bf9eb766bad6bddbe0ff43af23d28728f6195f109f
# MD5
2ca22133e944c477c5a3c4497c1e75ee
| Type | Value | Note |
|---|---|---|
| sha256 | 4f38f1e0e4d1a7b0ee3e98bf9eb766bad6bddbe0ff43af23d28728f6195f109f | Sample:Ursnif |
| md5 | 2ca22133e944c477c5a3c4497c1e75ee | Sample:Ursnif |
C2 Servers (1 recorded servers for this family)
| Address | Type | Port | Protocol | Status | Country |
|---|---|---|---|---|---|
| 91.92.109.38 | ip | 8080 | HTTP | sinkholed | RU |
C2 addresses are provided only from malware samples manually verified by the KEYDAL team. Commercial use is prohibited.