Ursnif | Threat Level: high | Type: Banking Trojan

Cryptographic Identifiers

SHA256308110773533c5740fd92d77094da83152f98230cd9635bc8f7dcd7dce910c75
MD568d4bfeb87777e1c8766088077822341
File Typeexe
Size177.5 KB
First Seen2023-04-03
File Nameserver_1.bin
Tagsagenziaentrate, exe, Gozi, isfb, MEF, mise, Ursnif

Malware Family: Ursnif

Ursnif, 2007'den beri aktiftir.

TypeBanking Trojan
Programming LanguageC++
Target PlatformWindows
C2 ProtocolHTTPS
PurposeEski bankacılık trojanı
First Seen Year2007
AliasesGozi

Threat Indicators (IOC)

  • SHA256: 308110773533c5740fd92d77094da83152f98230cd9635bc8f7dcd7dce910c75
  • MD5: 68d4bfeb87777e1c8766088077822341

You can verify all hash values of this sample on VirusTotal.

System Cleanup Guide

  1. Disconnect the system from the network — unplug ethernet, disable Wi-Fi
  2. Terminate suspicious processes from Task Manager
  3. Run a full system scan with Malwarebytes or Kaspersky
  4. HKCU\Software\Microsoft\Windows\CurrentVersion\Run kayıtlarını kontrol edin
  5. Review newly created tasks in Task Scheduler
  6. Change all your account passwords from a clean device
  7. Gerekirse Windows'u yeniden yükleyin ve verilerinizi temiz bir yedeğe geri alın

YARA Rule Hints

rule Ursnif_SHA256 {
    meta:
        description = "Ursnif sample: 308110773533c574"
        threat_level = "high"
        first_seen = "2023-04-03"
    condition:
        hash.sha256(0, filesize) == "308110773533c5740fd92d77094da83152f98230cd9635bc8f7dcd7dce910c75"
}

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 308110773533c5740fd92d77094da83152f98230cd9635bc8f7dcd7dce910c75 # MD5 68d4bfeb87777e1c8766088077822341
TypeValueNote
sha256 308110773533c5740fd92d77094da83152f98230cd9635bc8f7dcd7dce910c75 Sample:Ursnif
md5 68d4bfeb87777e1c8766088077822341 Sample:Ursnif

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