Cryptographic Identifiers
| SHA256 | 6a5f68075a632240a04af8768c3f63eb1fb92db95c325f1fe4bfa12d8820eb5c |
|---|---|
| MD5 | 17fad9f7d8a3c043f5ff000313f545df |
| File Type | zip |
| Size | 0.5 KB |
| First Seen | 2023-03-14 |
| File Name | marzo.zip |
| Tags | 250255, 7713, agenziaentrate, Gozi, ITA, MEF, mise, Ursnif, zip |
Malware Family: Ursnif
Ursnif, eski trojan'dır.
| Type | Banking Trojan |
|---|---|
| Programming Language | C++ |
| Target Platform | Windows |
| C2 Protocol | HTTPS |
| Purpose | Bankacılık trojanı |
| First Seen Year | 2007 |
| Aliases | Gozi |
Threat Indicators (IOC)
- SHA256:
6a5f68075a632240a04af8768c3f63eb1fb92db95c325f1fe4bfa12d8820eb5c - MD5:
17fad9f7d8a3c043f5ff000313f545df
You can verify all hash values of this sample on VirusTotal.
System Cleanup Guide
- Disconnect the system from the network — unplug ethernet, disable Wi-Fi
- Terminate suspicious processes from Task Manager
- Run a full system scan with Malwarebytes or Kaspersky
- HKCU\Software\Microsoft\Windows\CurrentVersion\Run kayıtlarını kontrol edin
- Review newly created tasks in Task Scheduler
- Change all your account passwords from a clean device
- Gerekirse Windows'u yeniden yükleyin ve verilerinizi temiz bir yedeğe geri alın
YARA Rule Hints
rule Ursnif_SHA256 {
meta:
description = "Ursnif sample: 6a5f68075a632240"
threat_level = "high"
first_seen = "2023-03-14"
condition:
hash.sha256(0, filesize) == "6a5f68075a632240a04af8768c3f63eb1fb92db95c325f1fe4bfa12d8820eb5c"
}
Ursnif — Malware Profile
Ursnif/Gozi ISFB banking trojan 2007. magic.js 1 string max obfuski. kpmg/thelancet camouflage. Discord CDN. Man-in-browser.
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
IOC List (2 indicators)
# SHA256
6a5f68075a632240a04af8768c3f63eb1fb92db95c325f1fe4bfa12d8820eb5c
# MD5
17fad9f7d8a3c043f5ff000313f545df
| Type | Value | Note |
|---|---|---|
| sha256 | 6a5f68075a632240a04af8768c3f63eb1fb92db95c325f1fe4bfa12d8820eb5c | Sample:Ursnif |
| md5 | 17fad9f7d8a3c043f5ff000313f545df | 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.