MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256201840d053c0d4f136503498ceeb8712f36c602a5b596f97aff5ae611344a26f
MD5005e9a5c08ad974416fef2d260071632
File Typevbe
Size544.3 KB
First Seen2025-10-14
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: 201840d053c0d4f136503498ceeb8712f36c602a5b596f97aff5ae611344a26f
  • MD5: 005e9a5c08ad974416fef2d260071632

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: 201840d053c0d4f1"
        threat_level = "medium"
        first_seen = "2025-10-14"
    condition:
        hash.sha256(0, filesize) == "201840d053c0d4f136503498ceeb8712f36c602a5b596f97aff5ae611344a26f"
}

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 201840d053c0d4f136503498ceeb8712f36c602a5b596f97aff5ae611344a26f # MD5 005e9a5c08ad974416fef2d260071632
TypeValueNote
sha256 201840d053c0d4f136503498ceeb8712f36c602a5b596f97aff5ae611344a26f Sample:MassLogger
md5 005e9a5c08ad974416fef2d260071632 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi