Ursnif | Tehdit Seviyesi: high | Tür: Banking Trojan

Kriptografik Tanımlayıcılar

SHA256c32b7acf86f0a0f86fe4dc24904a4f915ff345f2a6d583e44a75ea6789e75b66
MD5f046b4887b3a6abf72049e2ab80a07d8
Dosya Türüjs
Boyut1030.6 KB
İlk Görülme2023-07-28
Dosya AdıMySelective.js
EtiketlerGozi, Intuit ITA, js, second stage js, Ursnif

Malware Ailesi: Ursnif

Ursnif, eski trojan'dır.

TürBanking Trojan
Programlama DiliC++
Hedef PlatformWindows
C2 ProtokolüHTTPS
AmaçBankacılık trojanı
İlk Görülen Yıl2007
Diğer İsimlerGozi

Tehdit Göstergeleri (IOC)

  • SHA256: c32b7acf86f0a0f86fe4dc24904a4f915ff345f2a6d583e44a75ea6789e75b66
  • MD5: f046b4887b3a6abf72049e2ab80a07d8

Bu örneğin tüm hash değerlerini VirusTotal üzerinde doğrulayabilirsiniz.

Sistem Temizleme Rehberi

  1. Sistemi ağdan ayırın — ethernet çıkarın, Wi-Fi devre dışı bırakın
  2. Görev Yöneticisi'nden şüpheli process'leri sonlandırın
  3. Malwarebytes veya Kaspersky ile tam sistem taraması yapın
  4. HKCU\Software\Microsoft\Windows\CurrentVersion\Run kayıtlarını kontrol edin
  5. Yeni oluşturulan görevleri Task Scheduler'dan inceleyin
  6. Tüm hesap şifrelerinizi güvenli bir cihazdan değiştirin
  7. Gerekirse Windows'u yeniden yükleyin ve verilerinizi temiz bir yedeğe geri alın

YARA Kuralı İpuçları

rule Ursnif_SHA256 {
    meta:
        description = "Ursnif sample: c32b7acf86f0a0f8"
        threat_level = "high"
        first_seen = "2023-07-28"
    condition:
        hash.sha256(0, filesize) == "c32b7acf86f0a0f86fe4dc24904a4f915ff345f2a6d583e44a75ea6789e75b66"
}

Ursnif — Malware Profile

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

Malware Type
Other
Programming Language
C++
C2 Protocol
HTTPS
Target Systems
Windows
Also Known As (AKA)
Gozi

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

Zararlı Yazılım Aktivitesi
Kalıcılık Mekanizması
C2 İletişimi
Anti-Analiz

IOC List (2 indicators)

IOC — Ursnif
# SHA256 c32b7acf86f0a0f86fe4dc24904a4f915ff345f2a6d583e44a75ea6789e75b66 # MD5 f046b4887b3a6abf72049e2ab80a07d8
TypeValueNote
sha256 c32b7acf86f0a0f86fe4dc24904a4f915ff345f2a6d583e44a75ea6789e75b66 Sample:Ursnif
md5 f046b4887b3a6abf72049e2ab80a07d8 Sample:Ursnif
Ursnif — Go to Full Profile →

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.

Tags
ursnifbanking trojanmalwarehighsha256hash-analizi