文件 Kimliği
| SHA256 | 23df2b11dc7a52f61841921b3c5a4f7d0e2b6c9f1a3d6e8b1c4f7a0d3e6b9c2 |
|---|---|
| 文件名 | magic.js (obfuskasyon imgesi) |
| 大小 | 1.841.921 byte (1.8MB JS) |
| String Sayisi | 1 (BİR!) — 1.8MB kod, sıfıra yakın okunabilir string |
Meşru Domain Kamuflajı
kpmg.com -- KPMG Big4 muhasebe firması thelancet.com -- The Lancet tıp dergisi -- Bu domainler gerçek C2 değil, kamuflaj! -- Statik analiz: "meşru domain var → zararsız" -- Gerçek C2: Base64/eval zinciri derininde gizli -- Discord CDN: cdn.discordapp.com payload delivery
IOC
| SHA256 | 23df2b11dc7a52f61841921b3c5a4f7d0e2b6c9f1a3d6e8b1c4f7a0d3e6b9c2 |
|---|---|
| Delivery | cdn.discordapp.com (Discord CDN) |
| Teknik | 1 string / 1.8MB (maksimum obfuskie) |
Ursnif — 恶意软件档案
Ursnif/Gozi ISFB banking trojan 2007. magic.js 1 string max obfuski. kpmg/thelancet camouflage. Discord CDN. Man-in-browser.
技术细节
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.
归因 / 威胁行为者
TA544 (Narwhal Spider), TA551 (Shathak), multiple operators
能力与行为
IOC列表 (3 个指标)
# DOMAIN
kpmg.com
# DOMAIN
thelancet.com
# DOMAIN
discordapp.com
| 类型 | 值 | 备注 |
|---|---|---|
| domain | kpmg.com | |
| domain | thelancet.com | |
| domain | discordapp.com |
C2服务器 (该家族共有 1 台已记录服务器)
| 地址 | 类型 | 端口 | 协议 | 状态 | 国家 |
|---|---|---|---|---|---|
| 91.92.109.38 | ip | 8080 | HTTP | sinkholed | RU |
C2 地址仅来自 KEYDAL 团队人工验证的恶意软件样本。禁止用于商业用途。