MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25656ae4aa3f2fcab8f52cc534685e1d8558d75302db44938f8c88bab8f53677a5f
MD524a6c6347a568bddf9fc75e532d60cb8
File Typeexe
Size6057.5 KB
First Seen2025-09-05
File Name56ae4aa3f2fcab8f52cc534685e1d8558d75302db44938f8c88bab8f53677a5f
Tagsexe, MassLogger

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: 56ae4aa3f2fcab8f52cc534685e1d8558d75302db44938f8c88bab8f53677a5f
  • MD5: 24a6c6347a568bddf9fc75e532d60cb8

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: 56ae4aa3f2fcab8f"
        threat_level = "medium"
        first_seen = "2025-09-05"
    condition:
        hash.sha256(0, filesize) == "56ae4aa3f2fcab8f52cc534685e1d8558d75302db44938f8c88bab8f53677a5f"
}

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 56ae4aa3f2fcab8f52cc534685e1d8558d75302db44938f8c88bab8f53677a5f # MD5 24a6c6347a568bddf9fc75e532d60cb8
TypeValueNote
sha256 56ae4aa3f2fcab8f52cc534685e1d8558d75302db44938f8c88bab8f53677a5f Sample:MassLogger
md5 24a6c6347a568bddf9fc75e532d60cb8 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi