MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25629cf19f78ffdef551b13138bcb108fb1b8b3752939cc65ea9c36c32d55a25a94
MD5d86d80f1895bb23920fe9f23265837d5
File Typeexe
Size1043.0 KB
First Seen2026-05-20
File NameERAN_SİPARİŞ_2605_xlsx.exe
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: 29cf19f78ffdef551b13138bcb108fb1b8b3752939cc65ea9c36c32d55a25a94
  • MD5: d86d80f1895bb23920fe9f23265837d5

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: 29cf19f78ffdef55"
        threat_level = "medium"
        first_seen = "2026-05-20"
    condition:
        hash.sha256(0, filesize) == "29cf19f78ffdef551b13138bcb108fb1b8b3752939cc65ea9c36c32d55a25a94"
}

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 29cf19f78ffdef551b13138bcb108fb1b8b3752939cc65ea9c36c32d55a25a94 # MD5 d86d80f1895bb23920fe9f23265837d5
TypeValueNote
sha256 29cf19f78ffdef551b13138bcb108fb1b8b3752939cc65ea9c36c32d55a25a94 Sample:MassLogger
md5 d86d80f1895bb23920fe9f23265837d5 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi