MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2565c220078935313e8b830c8de820a8c17213c0015805c565668d0b2d8a2edc193
MD55dc084d8f3b33f2aa0a6b330e244d7b7
File Typevbe
Size822.1 KB
First Seen2025-10-22
File NameE-dekont.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: 5c220078935313e8b830c8de820a8c17213c0015805c565668d0b2d8a2edc193
  • MD5: 5dc084d8f3b33f2aa0a6b330e244d7b7

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: 5c220078935313e8"
        threat_level = "medium"
        first_seen = "2025-10-22"
    condition:
        hash.sha256(0, filesize) == "5c220078935313e8b830c8de820a8c17213c0015805c565668d0b2d8a2edc193"
}

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 5c220078935313e8b830c8de820a8c17213c0015805c565668d0b2d8a2edc193 # MD5 5dc084d8f3b33f2aa0a6b330e244d7b7
TypeValueNote
sha256 5c220078935313e8b830c8de820a8c17213c0015805c565668d0b2d8a2edc193 Sample:MassLogger
md5 5dc084d8f3b33f2aa0a6b330e244d7b7 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi