FormBook | Threat Level: high | Type: Infostealer
Cryptographic Identifiers
| SHA256 | c8ecede68b9b5cec883c8e6338932e859dbff782db0734bd3312c811d14ec755 |
|---|---|
| MD5 | 7220cea0b37505fd83bfede300141504 |
| File Type | js |
| Size | 1942.3 KB |
| First Seen | 2026-06-24 |
| File Name | RFQDMBU0083 - SPECIFICATION.js |
| Tags | FormBook, js |
Malware Family: FormBook
FormBook, MaaS infostealer'dır.
| Type | Infostealer |
|---|---|
| Programming Language | C |
| Target Platform | Windows |
| C2 Protocol | HTTP |
| Purpose | Form verisi, tuş kaydı |
| First Seen Year | 2016 |
| Aliases | xLoader |
Threat Indicators (IOC)
- SHA256:
c8ecede68b9b5cec883c8e6338932e859dbff782db0734bd3312c811d14ec755 - MD5:
7220cea0b37505fd83bfede300141504
System Cleanup Guide
- Disconnect the system from the network immediately
- Yeni bir cihazdan banka hesabı, sosyal medya ve e-posta şifrelerini değiştirin
- Move crypto wallets to a new address and abandon the old ones
- Start a full scan with up-to-date antivirus
- Clear saved browser passwords and enable 2FA
- Sign out of all sessions on every affected service
YARA Rule Hints
rule FormBook_SHA256 {
meta:
description = "FormBook sample: c8ecede68b9b5cec"
threat_level = "high"
first_seen = "2026-06-24"
condition:
hash.sha256(0, filesize) == "c8ecede68b9b5cec883c8e6338932e859dbff782db0734bd3312c811d14ec755"
}
FormBook — Malware Profile
FormBook web form verisi ve credential hırsızı. SmartAssembly paketleyici. İspanyolca LATAM elektrik faturası lür.
Malware Type
Infostealer
Programming Language
C
C2 Protocol
HTTP
Target Systems
Windows
Also Known As (AKA)
xLoader
Technical Details
C dili, Windows API hooking (form grabbing), HTTP POST C2, browser form stealer, keylogger, screenshot, clipboard monitor, process injection (process hollowing)
Attribution / Threat Actor
ABD'de gelistirilmis; satis darknet forumlari uzerinden yapilmis. Dunya genelindeki multuple suc gruplarina hizmet veren MaaS platformu.
Capabilities & Behavior
Tarayıcı Kimlik Bilgileri
Çerez Hırsızlığı
Kripto Cüzdan Çalma
Sistem Bilgisi
Ekran Görüntüsü
FTP/SSH İstemci Şifreleri
E-posta İstemcisi Çalma
Veri Sızıntısı
IOC List (2 indicators)
IOC — FormBook
# SHA256
c8ecede68b9b5cec883c8e6338932e859dbff782db0734bd3312c811d14ec755
# MD5
7220cea0b37505fd83bfede300141504
| Type | Value | Note |
|---|---|---|
| sha256 | c8ecede68b9b5cec883c8e6338932e859dbff782db0734bd3312c811d14ec755 | |
| md5 | 7220cea0b37505fd83bfede300141504 |
C2 Servers (5 recorded servers for this family)
| Address | Type | Port | Protocol | Status | Country |
|---|---|---|---|---|---|
| 45.61.136.16 | ip | 80 | HTTP | active | US |
| hxxp://freeupgrades.net/s1xt/ | domain | 80 | HTTP | inactive | US |
| 103.75.160.239 | ip | 443 | HTTPS | inactive | HK |
| 3.29.19.86 | ip | — | TCP | inactive | — |
| form-book.club | domain | 80 | HTTP | sinkholed | — |
C2 addresses are provided only from malware samples manually verified by the KEYDAL team. Commercial use is prohibited.