FormBook | Nivel de amenaza: high | Tipo: Infostealer
Identificadores criptográficos
| SHA256 | 814e9182e488fc28c23dbe7a004846b6aa709a1cb31a11e335f5a20d2a7fd35b |
|---|---|
| MD5 | e5a6cf272b9d1191e74ce2c9f64064e2 |
| Tipo de archivo | exe |
| Tamaño | 955.0 KB |
| Primera detección | 2026-06-08 |
| Nombre de archivo | 814e9182e488fc28c23dbe7a004846b6aa709a1cb31a11e335f5a20d2a7fd35b |
| Etiquetas | exe, FormBook |
Familia de malware: FormBook
FormBook, MaaS infostealer'dır.
| Tipo | Infostealer |
|---|---|
| Lenguaje de programación | C |
| Plataforma objetivo | Windows |
| Protocolo C2 | HTTP |
| Propósito | Form verisi, tuş kaydı |
| Año de primera detección | 2016 |
| Otros nombres | xLoader |
Indicadores de amenaza (IOC)
- SHA256:
814e9182e488fc28c23dbe7a004846b6aa709a1cb31a11e335f5a20d2a7fd35b - MD5:
e5a6cf272b9d1191e74ce2c9f64064e2
Guía de limpieza del sistema
- Desconecte el sistema de la red de inmediato
- Yeni bir cihazdan banka hesabı, sosyal medya ve e-posta şifrelerini değiştirin
- Mueva las carteras cripto a una nueva dirección y abandone las antiguas
- Inicie un análisis completo con un antivirus actualizado
- Borre las contraseñas guardadas del navegador y active 2FA
- Cierre todas las sesiones en los servicios afectados
Sugerencias de reglas YARA
rule FormBook_SHA256 {
meta:
description = "FormBook sample: 814e9182e488fc28"
threat_level = "high"
first_seen = "2026-06-08"
condition:
hash.sha256(0, filesize) == "814e9182e488fc28c23dbe7a004846b6aa709a1cb31a11e335f5a20d2a7fd35b"
}
FormBook — Perfil del malware
FormBook web form verisi ve credential hırsızı. SmartAssembly paketleyici. İspanyolca LATAM elektrik faturası lür.
Tipo de malware
Infostealer
Lenguaje de programación
C
Protocolo C2
HTTP
Sistemas objetivo
Windows
También conocido como (AKA)
xLoader
Detalles técnicos
C dili, Windows API hooking (form grabbing), HTTP POST C2, browser form stealer, keylogger, screenshot, clipboard monitor, process injection (process hollowing)
Atribución / Actor de amenaza
ABD'de gelistirilmis; satis darknet forumlari uzerinden yapilmis. Dunya genelindeki multuple suc gruplarina hizmet veren MaaS platformu.
Capacidades y comportamiento
Tarayıcı Kimlik Bilgileri
Çerez Hırsızlığı
Kripto Cüzdan Çalma
Sistem Bilgisi
Ekran Görüntüsü
FTP/SSH İstemci Şifreleri
E-posta İstemcisi Çalma
Veri Sızıntısı
Lista IOC (19 indicadores)
IOC — FormBook
# SHA256
814e9182e488fc28c23dbe7a004846b6aa709a1cb31a11e335f5a20d2a7fd35b
# MD5
e5a6cf272b9d1191e74ce2c9f64064e2
# IP
103.75.160.239
# IP
185.225.75.143
# IP
45.61.136.16
# DOMAIN
form-data-collector.com
# DOMAIN
cloudflare-cdn-analytics.com
# DOMAIN
api-tracker-stats.net
# DOMAIN
form-book.club
# DOMAIN
hxxp://freeupgrades.net/s1xt/
# MUTEX
FBMT_7d4a2x_mutex
# MUTEX
FORM_BOOK_MUTEX
# REGISTRY
HKCUSoftwareMicrosoftWindowsCurrentVersionRunFormBook
# FILEPATH
C:ProgramData[random].exe
# FILEPATH
%TEMP%fbook_tmp.exe
# EMAIL
formgrab_panel@tutanota.com
# EMAIL
collector@mailerserver.net
# EMAIL
receive@formbook-panel.com
# URL
https://maliciousoffice.ru/gate.php
| Tipo | Valor | Nota |
|---|---|---|
| sha256 | 814e9182e488fc28c23dbe7a004846b6aa709a1cb31a11e335f5a20d2a7fd35b | |
| md5 | e5a6cf272b9d1191e74ce2c9f64064e2 | |
| ip | 103.75.160.239 | C2:443 |
| ip | 185.225.75.143 | FormBook C2 panel EU |
| ip | 45.61.136.16 | C2:80 |
| domain | form-data-collector.com | FormBook HTTP C2 domain |
| domain | cloudflare-cdn-analytics.com | FormBook typosquatting Cloudflare domain |
| domain | api-tracker-stats.net | FormBook tracker C2 |
| domain | form-book.club | C2:80 |
| domain | hxxp://freeupgrades.net/s1xt/ | C2:80 |
| mutex | FBMT_7d4a2x_mutex | FormBook HTTP C2 mutex pattern |
| mutex | FORM_BOOK_MUTEX | FormBook mutex variant |
| registry | HKCUSoftwareMicrosoftWindowsCurrentVersionRunFormBook | FormBook autorun |
| filepath | C:ProgramData[random].exe | FormBook injection loader |
| filepath | %TEMP%fbook_tmp.exe | FormBook gecici dosya |
| formgrab_panel@tutanota.com | FormBook operator email - Tutanota | |
| collector@mailerserver.net | FormBook web panel exfiltration | |
| receive@formbook-panel.com | FormBook form data alici e-posta | |
| url | https://maliciousoffice.ru/gate.php | FormBook HTTP C2 gate |
Servidores C2 (5 servidores registrados para esta familia)
| Dirección | Tipo | Puerto | Protocolo | Estado | País |
|---|---|---|---|---|---|
| 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 | — |
Las direcciones C2 se proporcionan únicamente a partir de muestras de malware verificadas manualmente por el equipo KEYDAL. Se prohíbe el uso comercial.