FormBook — PM114079-990528pdf.exe [a1c41f9a]

Cryptographic Identifiers

Malware Family: FormBook

FormBook, MaaS infostealer'dır.

Threat Indicators (IOC)

• SHA256: a1c41f9aec30973dd26c896128015649a055b2c7a59e488b66bab1f30816ff1f
• MD5: 60c6951eb4cdcc8531f5d0bae1b284ee

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: a1c41f9aec30973d"
        threat_level = "high"
        first_seen = "2026-06-16"
    condition:
        hash.sha256(0, filesize) == "a1c41f9aec30973dd26c896128015649a055b2c7a59e488b66bab1f30816ff1f"
}