FormBook — ProformaInvoice-5628-1.vbs [d34d42aa]

Cryptographic Identifiers

Malware Family: FormBook

FormBook, MaaS infostealer'dır.

Threat Indicators (IOC)

• SHA256: d34d42aa33ae8ec42412fdf1233494466051e7fbc21c67db899f0472f0df6ce4
• MD5: e5526e1c62261081164cf81dbf5928eb

System Cleanup Guide

1. Disconnect the system from the network immediately
2. Yeni bir cihazdan banka hesabı, sosyal medya ve e-posta şifrelerini değiştirin
3. Move crypto wallets to a new address and abandon the old ones
4. Start a full scan with up-to-date antivirus
5. Clear saved browser passwords and enable 2FA
6. Sign out of all sessions on every affected service

YARA Rule Hints

rule FormBook_SHA256 {
    meta:
        description = "FormBook sample: d34d42aa33ae8ec4"
        threat_level = "high"
        first_seen = "2026-06-23"
    condition:
        hash.sha256(0, filesize) == "d34d42aa33ae8ec42412fdf1233494466051e7fbc21c67db899f0472f0df6ce4"
}