Ursnif – Cliente921.zip [11abd361]

Tehdit Valeurlendirmesi

Bu ornek, hedef sisteme ek zararlı yazılım yuklemek amacıyla tasarlanmis moduler bir yukleyici (loader) olarak tespit edilmistir. Bankacılık trojanları, fidye yazılımları veya diger ikinci asama yukler indirebilmektedir.

Capacités détectées

• Payload Indirme
• Surec Enjeksiyonu
• Kalicilik
• Anti-Analiz
• Sifrelenmis Iletisim

Étiquettes MalwareBazaar

Note d’analyse

Bu ornek Ursnif ailesine ait ve MalwareBazaar platformundan alınmıstır. KEYDAL Guvenlik Arastirmaları tarafından metadata analizi gerceklestirilmis ve IOC veritabanına eklenmistir.

Ursnif — Profil du malware

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

Type de malware

Other

Langage de programmation

C++

Protocole C2

HTTPS

Systèmes ciblés

Windows

Aussi connu sous (AKA)

Gozi

Détails techniques

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 / Acteur de la menace

TA544 (Narwhal Spider), TA551 (Shathak), multiple operators

Capacités et comportement

Zararlı Yazılım Aktivitesi

Kalıcılık Mekanizması

C2 İletişimi

Anti-Analiz

Liste IOC (2 indicateurs)

IOC — Ursnif Copier

# SHA256 11abd361bb281765042119bb6eb53d87dfb54960d94479803d2703ef8f5d7044 # MD5 6afacef61b7fa9e9d3c8e8201062a5f8

Type	Valeur	Note
sha256	11abd361bb281765042119bb6eb53d87dfb54960d94479803d2703ef8f5d7044
md5	6afacef61b7fa9e9d3c8e8201062a5f8

Serveurs C2 (1 serveurs enregistrés pour cette famille)

Adresse	Type	Port	Protocole	Statut	Pays
91.92.109.38	ip	8080	HTTP	sinkholed	RU

Les adresses C2 proviennent uniquement d'échantillons de malwares vérifiés manuellement par l'équipe KEYDAL. Toute utilisation commerciale est interdite.