FormBook | Tehdit Seviyesi: high | Tür: Infostealer
Kriptografik Tanımlayıcılar
| SHA256 | 814e9182e488fc28c23dbe7a004846b6aa709a1cb31a11e335f5a20d2a7fd35b |
|---|---|
| MD5 | e5a6cf272b9d1191e74ce2c9f64064e2 |
| Dosya Türü | exe |
| Boyut | 955.0 KB |
| İlk Görülme | 2026-06-08 |
| Dosya Adı | 814e9182e488fc28c23dbe7a004846b6aa709a1cb31a11e335f5a20d2a7fd35b |
| Etiketler | exe, FormBook |
Malware Ailesi: FormBook
FormBook, MaaS infostealer'dır.
| Tür | Infostealer |
|---|---|
| Programlama Dili | C |
| Hedef Platform | Windows |
| C2 Protokolü | HTTP |
| Amaç | Form verisi, tuş kaydı |
| İlk Görülen Yıl | 2016 |
| Diğer İsimler | xLoader |
Tehdit Göstergeleri (IOC)
- SHA256:
814e9182e488fc28c23dbe7a004846b6aa709a1cb31a11e335f5a20d2a7fd35b - MD5:
e5a6cf272b9d1191e74ce2c9f64064e2
Sistem Temizleme Rehberi
- Sistemi ağdan hemen ayırın
- Yeni bir cihazdan banka hesabı, sosyal medya ve e-posta şifrelerini değiştirin
- Kripto cüzdanları yeni bir adrese taşıyın, eski cüzdanları terk edin
- Güncel antivirüs ile tam tarama başlatın
- Tarayıcı kayıtlı şifrelerini temizleyin ve 2FA aktif edin
- Etkilenen tüm hizmetlerde oturumları kapatın
YARA Kuralı İpuçları
rule FormBook_SHA256 {
meta:
description = "FormBook sample: 814e9182e488fc28"
threat_level = "high"
first_seen = "2026-06-08"
condition:
hash.sha256(0, filesize) == "814e9182e488fc28c23dbe7a004846b6aa709a1cb31a11e335f5a20d2a7fd35b"
}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 (19 indicators)
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
| Type | Value | Note |
|---|---|---|
| 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 |
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.