MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256eb7ded03ebf91e2af0aefffa0f2476c31d26a3c7c009f3a42eaa1558ee02e26a
MD546773cdb7c7862066473e984ee35c0ed
File Typebat
Size9.9 KB
First Seen2025-10-30
File NameJustificante_transferencia_2025-10-28-08.56.02.58470 pdf .bat
Tagsbat, 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: eb7ded03ebf91e2af0aefffa0f2476c31d26a3c7c009f3a42eaa1558ee02e26a
  • MD5: 46773cdb7c7862066473e984ee35c0ed

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: eb7ded03ebf91e2a"
        threat_level = "medium"
        first_seen = "2025-10-30"
    condition:
        hash.sha256(0, filesize) == "eb7ded03ebf91e2af0aefffa0f2476c31d26a3c7c009f3a42eaa1558ee02e26a"
}

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 eb7ded03ebf91e2af0aefffa0f2476c31d26a3c7c009f3a42eaa1558ee02e26a # MD5 46773cdb7c7862066473e984ee35c0ed
TypeValueNote
sha256 eb7ded03ebf91e2af0aefffa0f2476c31d26a3c7c009f3a42eaa1558ee02e26a Sample:MassLogger
md5 46773cdb7c7862066473e984ee35c0ed Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi