Ursnif - client.zip [bff22c83]

Hash / Bilgi	Deger
SHA256	bff22c83a53c9520a898473d80cc9125e2c222846c72e4b352409b7b0ef50eba
MD5	3baa01028a3a940423f8fc9abb5a027d
SHA1	00aa5de37b20fd7c38d6af416e7fd67d6d835f78
Dosya Adi	client.zip
Dosya Türü	zip
Boyut	40,308 bytes
Ilk Görülme	2023-10-10

Tehdit Degerlendirmesi

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.

Tespit Edilen Yetenekler

Payload Indirme
Surec Enjeksiyonu
Kalicilik
Anti-Analiz
Sifrelenmis Iletisim

MalwareBazaar Etiketleri

agenziaentrateGoziisfbUrsnifzipzip 2zip vbs

Analiz Notu

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

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
bff22c83a53c9520a898473d80cc9125e2c222846c72e4b352409b7b0ef50eba

# MD5
3baa01028a3a940423f8fc9abb5a027d

Type	Value	Note
sha256	bff22c83a53c9520a898473d80cc9125e2c222846c72e4b352409b7b0ef50eba
md5	3baa01028a3a940423f8fc9abb5a027d

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.