Ursnif | Tehdit Seviyesi: high | Tür: Banking Trojan

Kriptografik Tanımlayıcılar

SHA256e6103eab4c5709fbd4db87710bbde6a86a7cb2adacda62876cca4444c3ac2398
MD5f99960acd66b31c05874400923c84f32
Dosya Türüpdf
Boyut86.0 KB
İlk Görülme2023-04-28
Dosya Adı2_IT01526424626_02_26042023_010000.pdf
EtiketlerDhlCredit, Gozi, pdf, 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: e6103eab4c5709fbd4db87710bbde6a86a7cb2adacda62876cca4444c3ac2398
  • MD5: f99960acd66b31c05874400923c84f32

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: e6103eab4c5709fb"
        threat_level = "high"
        first_seen = "2023-04-28"
    condition:
        hash.sha256(0, filesize) == "e6103eab4c5709fbd4db87710bbde6a86a7cb2adacda62876cca4444c3ac2398"
}

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 e6103eab4c5709fbd4db87710bbde6a86a7cb2adacda62876cca4444c3ac2398 # MD5 f99960acd66b31c05874400923c84f32
TypeValueNote
sha256 e6103eab4c5709fbd4db87710bbde6a86a7cb2adacda62876cca4444c3ac2398 Sample:Ursnif
md5 f99960acd66b31c05874400923c84f32 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