MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25684c27084bb019d81180f74d1d248f1728dbb2159216d2358ab16003731de2283
MD5c924b0d32e27a0f7ac33020aad40c9be
File Typevbe
Size1273.0 KB
First Seen2025-12-05
File Name-058-2025.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: 84c27084bb019d81180f74d1d248f1728dbb2159216d2358ab16003731de2283
  • MD5: c924b0d32e27a0f7ac33020aad40c9be

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: 84c27084bb019d81"
        threat_level = "medium"
        first_seen = "2025-12-05"
    condition:
        hash.sha256(0, filesize) == "84c27084bb019d81180f74d1d248f1728dbb2159216d2358ab16003731de2283"
}

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 84c27084bb019d81180f74d1d248f1728dbb2159216d2358ab16003731de2283 # MD5 c924b0d32e27a0f7ac33020aad40c9be
TypeValueNote
sha256 84c27084bb019d81180f74d1d248f1728dbb2159216d2358ab16003731de2283 Sample:MassLogger
md5 c924b0d32e27a0f7ac33020aad40c9be Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi