Kriptografik Tanımlayıcılar
| SHA256 | 391db6dff52b7115a7f44911ae9a77cf40c7845ae5624568a4be629bef0d3405 |
|---|---|
| MD5 | 6b5a44c9dbc47df8b719b1cb38bfa63d |
| Dosya Türü | zip |
| Boyut | 5.2 KB |
| İlk Görülme | 2023-03-01 |
| Dosya Adı | Agenzia_Entrate.zip |
| Etiketler | agenziaentrate, Gozi, pw-marzo2023, Ursnif, zip |
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:
391db6dff52b7115a7f44911ae9a77cf40c7845ae5624568a4be629bef0d3405 - MD5:
6b5a44c9dbc47df8b719b1cb38bfa63d
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: 391db6dff52b7115"
threat_level = "high"
first_seen = "2023-03-01"
condition:
hash.sha256(0, filesize) == "391db6dff52b7115a7f44911ae9a77cf40c7845ae5624568a4be629bef0d3405"
}
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
391db6dff52b7115a7f44911ae9a77cf40c7845ae5624568a4be629bef0d3405
# MD5
6b5a44c9dbc47df8b719b1cb38bfa63d
| Type | Value | Note |
|---|---|---|
| sha256 | 391db6dff52b7115a7f44911ae9a77cf40c7845ae5624568a4be629bef0d3405 | Sample:Ursnif |
| md5 | 6b5a44c9dbc47df8b719b1cb38bfa63d | 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.