Ursnif | Tehdit Seviyesi: high | Tür: Banking Trojan

Kriptografik Tanımlayıcılar

SHA256867ba4e92f53581bae02b14a694c3d70b105a7d22c774606e026d41577ad857b
MD585dad422329d6865b5b960400ed61a23
Dosya Türüjs
Boyut526.8 KB
İlk Görülme2023-07-04
Dosya Adısubordinati.js
Etiketlerbrt, Gozi, isfb, ITA, js, secondstage, Ursnif

Malware Ailesi: Ursnif

Ursnif, 2007'den beri aktiftir.

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

Tehdit Göstergeleri (IOC)

  • SHA256: 867ba4e92f53581bae02b14a694c3d70b105a7d22c774606e026d41577ad857b
  • MD5: 85dad422329d6865b5b960400ed61a23

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: 867ba4e92f53581b"
        threat_level = "high"
        first_seen = "2023-07-04"
    condition:
        hash.sha256(0, filesize) == "867ba4e92f53581bae02b14a694c3d70b105a7d22c774606e026d41577ad857b"
}

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 867ba4e92f53581bae02b14a694c3d70b105a7d22c774606e026d41577ad857b # MD5 85dad422329d6865b5b960400ed61a23
TypeValueNote
sha256 867ba4e92f53581bae02b14a694c3d70b105a7d22c774606e026d41577ad857b Sample:Ursnif
md5 85dad422329d6865b5b960400ed61a23 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