Ursnif | Threat Level: high | Type: Banking Trojan

Cryptographic Identifiers

SHA256686704b95d8594a70d0305b7702d3518120ef4088795380847a48e313d017b4a
MD5cf3befbe8ddfcdc3e9a35f39c15a77cc
File Typexls
Size60.0 KB
First Seen2023-03-09
File NameFM_9095590_E4_9526_2023_02.xls
TagsGLS, Gozi, italy, Ursnif, xls

Malware Family: Ursnif

Ursnif, eski trojan'dır.

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

Threat Indicators (IOC)

  • SHA256: 686704b95d8594a70d0305b7702d3518120ef4088795380847a48e313d017b4a
  • MD5: cf3befbe8ddfcdc3e9a35f39c15a77cc

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: 686704b95d8594a7"
        threat_level = "high"
        first_seen = "2023-03-09"
    condition:
        hash.sha256(0, filesize) == "686704b95d8594a70d0305b7702d3518120ef4088795380847a48e313d017b4a"
}

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 686704b95d8594a70d0305b7702d3518120ef4088795380847a48e313d017b4a # MD5 cf3befbe8ddfcdc3e9a35f39c15a77cc
TypeValueNote
sha256 686704b95d8594a70d0305b7702d3518120ef4088795380847a48e313d017b4a Sample:Ursnif
md5 cf3befbe8ddfcdc3e9a35f39c15a77cc 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