MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25652e21b7dff216804700a9aa925271a4149d379dd47e933524b7dd6f5eee9ec7c
MD503445bf74d9ed6bb145462468a7d8a47
File Typeexe
Size778.0 KB
First Seen2026-06-08
File Name52e21b7dff216804700a9aa925271a4149d379dd47e933524b7dd6f5eee9ec7c
Tagsexe, MassLogger

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: 52e21b7dff216804700a9aa925271a4149d379dd47e933524b7dd6f5eee9ec7c
  • MD5: 03445bf74d9ed6bb145462468a7d8a47

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: 52e21b7dff216804"
        threat_level = "medium"
        first_seen = "2026-06-08"
    condition:
        hash.sha256(0, filesize) == "52e21b7dff216804700a9aa925271a4149d379dd47e933524b7dd6f5eee9ec7c"
}

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 52e21b7dff216804700a9aa925271a4149d379dd47e933524b7dd6f5eee9ec7c # MD5 03445bf74d9ed6bb145462468a7d8a47
TypeValueNote
sha256 52e21b7dff216804700a9aa925271a4149d379dd47e933524b7dd6f5eee9ec7c Sample:MassLogger
md5 03445bf74d9ed6bb145462468a7d8a47 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi