MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25659e4767c97b255bea1371d36fb36fb3286e08c36bde944a14b934a2059c2f496
MD51c800178a285d195e493ae23f6e30baa
File Typerar
Size473.2 KB
First Seen2026-05-20
File NameÜRÜNLERİN_ÇİZİMİ_VE_AÇIKLAMASI_docx.z.rar
TagsMassLogger, rar

Malware Family: MassLogger

MassLogger, email tabanlı keylogger'dır.

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

Threat Indicators (IOC)

  • SHA256: 59e4767c97b255bea1371d36fb36fb3286e08c36bde944a14b934a2059c2f496
  • MD5: 1c800178a285d195e493ae23f6e30baa

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: 59e4767c97b255be"
        threat_level = "medium"
        first_seen = "2026-05-20"
    condition:
        hash.sha256(0, filesize) == "59e4767c97b255bea1371d36fb36fb3286e08c36bde944a14b934a2059c2f496"
}

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 59e4767c97b255bea1371d36fb36fb3286e08c36bde944a14b934a2059c2f496 # MD5 1c800178a285d195e493ae23f6e30baa
TypeValueNote
sha256 59e4767c97b255bea1371d36fb36fb3286e08c36bde944a14b934a2059c2f496 Sample:MassLogger
md5 1c800178a285d195e493ae23f6e30baa Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi