FormBook — RFQ 477528).js [e2378990]

Cryptographic Identifiers

Malware Family: FormBook

FormBook, MaaS infostealer'dır.

Threat Indicators (IOC)

• SHA256: e23789908a806af004d8a8d83dcb2d804d5634cf3c23d90e91f32abd515442f4
• MD5: 554b72ad7349bbd0262e218a7530dcf7

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: e23789908a806af0"
        threat_level = "high"
        first_seen = "2026-07-01"
    condition:
        hash.sha256(0, filesize) == "e23789908a806af004d8a8d83dcb2d804d5634cf3c23d90e91f32abd515442f4"
}