MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2569e50f8322b416f403b4bdd1d0d0c90cb50fbfd783753c9fe4cf3bf501b56805e
MD55ec60407d235394ae56b94a632ffea31
File Typeexe
Size771.5 KB
First Seen2025-11-06
File Name9e50f8322b416f403b4bdd1d0d0c90cb50fbfd783753c9fe4cf3bf501b56805e
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: 9e50f8322b416f403b4bdd1d0d0c90cb50fbfd783753c9fe4cf3bf501b56805e
  • MD5: 5ec60407d235394ae56b94a632ffea31

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: 9e50f8322b416f40"
        threat_level = "medium"
        first_seen = "2025-11-06"
    condition:
        hash.sha256(0, filesize) == "9e50f8322b416f403b4bdd1d0d0c90cb50fbfd783753c9fe4cf3bf501b56805e"
}

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 9e50f8322b416f403b4bdd1d0d0c90cb50fbfd783753c9fe4cf3bf501b56805e # MD5 5ec60407d235394ae56b94a632ffea31
TypeValueNote
sha256 9e50f8322b416f403b4bdd1d0d0c90cb50fbfd783753c9fe4cf3bf501b56805e Sample:MassLogger
md5 5ec60407d235394ae56b94a632ffea31 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi