MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25687a467019fd2a9701b00834c0bf195279b96c7e34f1823539f0d59b8b82b3f42
MD54dd991b57f2f59ce0ea471613baee4be
File Typerar
Size482.7 KB
First Seen2026-06-12
File NamecomprobanteXdeXpago.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: 87a467019fd2a9701b00834c0bf195279b96c7e34f1823539f0d59b8b82b3f42
  • MD5: 4dd991b57f2f59ce0ea471613baee4be

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: 87a467019fd2a970"
        threat_level = "medium"
        first_seen = "2026-06-12"
    condition:
        hash.sha256(0, filesize) == "87a467019fd2a9701b00834c0bf195279b96c7e34f1823539f0d59b8b82b3f42"
}

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 87a467019fd2a9701b00834c0bf195279b96c7e34f1823539f0d59b8b82b3f42 # MD5 4dd991b57f2f59ce0ea471613baee4be
TypeValueNote
sha256 87a467019fd2a9701b00834c0bf195279b96c7e34f1823539f0d59b8b82b3f42 Sample:MassLogger
md5 4dd991b57f2f59ce0ea471613baee4be Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi