MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25684198fc8f345a58baa065f9e03e2fd47b512bc73d4370d2dacc4fbf91e435e14
MD5f2a33a331598720bcfbb982dfbbe1183
File Typevbe
Size1273.0 KB
First Seen2025-12-03
File Namee-dekont.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: 84198fc8f345a58baa065f9e03e2fd47b512bc73d4370d2dacc4fbf91e435e14
  • MD5: f2a33a331598720bcfbb982dfbbe1183

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: 84198fc8f345a58b"
        threat_level = "medium"
        first_seen = "2025-12-03"
    condition:
        hash.sha256(0, filesize) == "84198fc8f345a58baa065f9e03e2fd47b512bc73d4370d2dacc4fbf91e435e14"
}

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 84198fc8f345a58baa065f9e03e2fd47b512bc73d4370d2dacc4fbf91e435e14 # MD5 f2a33a331598720bcfbb982dfbbe1183
TypeValueNote
sha256 84198fc8f345a58baa065f9e03e2fd47b512bc73d4370d2dacc4fbf91e435e14 Sample:MassLogger
md5 f2a33a331598720bcfbb982dfbbe1183 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi