MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256484e2eca5cbdf5730bc88f223118d415bb6fce8e9350f2cd368efe5fb6be2776
MD53928115c51130c4b6176061b53647c39
File Typevbe
Size726.1 KB
First Seen2025-06-13
File Namemby6653421.pdf.vbe
TagsMassLogger, 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: 484e2eca5cbdf5730bc88f223118d415bb6fce8e9350f2cd368efe5fb6be2776
  • MD5: 3928115c51130c4b6176061b53647c39

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: 484e2eca5cbdf573"
        threat_level = "medium"
        first_seen = "2025-06-13"
    condition:
        hash.sha256(0, filesize) == "484e2eca5cbdf5730bc88f223118d415bb6fce8e9350f2cd368efe5fb6be2776"
}

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 484e2eca5cbdf5730bc88f223118d415bb6fce8e9350f2cd368efe5fb6be2776 # MD5 3928115c51130c4b6176061b53647c39
TypeValueNote
sha256 484e2eca5cbdf5730bc88f223118d415bb6fce8e9350f2cd368efe5fb6be2776 Sample:MassLogger
md5 3928115c51130c4b6176061b53647c39 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi