MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2565a0dd4e1ea8cceb2f69a5a9490a81b4e30b5fdf151837ab7279f44376de0e37b
MD58a5b87f1a7762d135f679f116455fe71
File Typevbe
Size975.0 KB
First Seen2025-08-06
File Namedekont.pdf.vbe
Tagsgeo, MassLogger, TUR, vbe

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: 5a0dd4e1ea8cceb2f69a5a9490a81b4e30b5fdf151837ab7279f44376de0e37b
  • MD5: 8a5b87f1a7762d135f679f116455fe71

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: 5a0dd4e1ea8cceb2"
        threat_level = "medium"
        first_seen = "2025-08-06"
    condition:
        hash.sha256(0, filesize) == "5a0dd4e1ea8cceb2f69a5a9490a81b4e30b5fdf151837ab7279f44376de0e37b"
}

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 5a0dd4e1ea8cceb2f69a5a9490a81b4e30b5fdf151837ab7279f44376de0e37b # MD5 8a5b87f1a7762d135f679f116455fe71
TypeValueNote
sha256 5a0dd4e1ea8cceb2f69a5a9490a81b4e30b5fdf151837ab7279f44376de0e37b Sample:MassLogger
md5 8a5b87f1a7762d135f679f116455fe71 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi