Ursnif | Tehdit Seviyesi: high | Tür: Banking Trojan

Kriptografik Tanımlayıcılar

SHA256902dbff4eafe27ea704b134d186e3c67e80b12e414261b6266713c103906edf5
MD5987b1ae80e937a6ae1ddc147bfe82dbb
Dosya Türüjs
Boyut1156.5 KB
İlk Görülme2023-07-28
Dosya AdıInv_7272023_from716517_596629.js
Etiketlerfirst stage js, Gozi, Intuit ITA, 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: 902dbff4eafe27ea704b134d186e3c67e80b12e414261b6266713c103906edf5
  • MD5: 987b1ae80e937a6ae1ddc147bfe82dbb

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: 902dbff4eafe27ea"
        threat_level = "high"
        first_seen = "2023-07-28"
    condition:
        hash.sha256(0, filesize) == "902dbff4eafe27ea704b134d186e3c67e80b12e414261b6266713c103906edf5"
}

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 902dbff4eafe27ea704b134d186e3c67e80b12e414261b6266713c103906edf5 # MD5 987b1ae80e937a6ae1ddc147bfe82dbb
TypeValueNote
sha256 902dbff4eafe27ea704b134d186e3c67e80b12e414261b6266713c103906edf5 Sample:Ursnif
md5 987b1ae80e937a6ae1ddc147bfe82dbb 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