MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256fd2a48d552d870aee951d4ab01b6a3ac73d2b6004e8a1a238de3a237599e0cb6
MD5f9d4e34e064be423034ae505684e0ffc
File Typebat
Size7.6 KB
First Seen2025-09-26
File Namecomprovativo pdf.bat
Tagsbat, MassLogger, MSI-STEGO

Malware Family: MassLogger

MassLogger, email keylogger'dır.

TypeInfostealer
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeEmail keylogger
First Seen Year2020

Threat Indicators (IOC)

  • SHA256: fd2a48d552d870aee951d4ab01b6a3ac73d2b6004e8a1a238de3a237599e0cb6
  • MD5: f9d4e34e064be423034ae505684e0ffc

You can verify all hash values of this sample on VirusTotal.

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 MassLogger_SHA256 {
    meta:
        description = "MassLogger sample: fd2a48d552d870ae"
        threat_level = "medium"
        first_seen = "2025-09-26"
    condition:
        hash.sha256(0, filesize) == "fd2a48d552d870aee951d4ab01b6a3ac73d2b6004e8a1a238de3a237599e0cb6"
}

MassLogger — Malware Profile

MassLogger credential stealer. PT2600000043.js Portekiz fatura lurü. CommonJS obfuscation. dispatch configuration data.

Malware Type
Infostealer
Programming Language
C#/.NET
C2 Protocol
SMTP/FTP
Target Systems
Windows

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 (2 indicators)

IOC — MassLogger
# SHA256 fd2a48d552d870aee951d4ab01b6a3ac73d2b6004e8a1a238de3a237599e0cb6 # MD5 f9d4e34e064be423034ae505684e0ffc
TypeValueNote
sha256 fd2a48d552d870aee951d4ab01b6a3ac73d2b6004e8a1a238de3a237599e0cb6 Sample:MassLogger
md5 f9d4e34e064be423034ae505684e0ffc Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi