MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256019f809d35950f9c45a9f2b33b2fa85b17829481aac37124b28478c9f0faf71c
MD52053b07e67e71dd9ba69c50d77f2b498
File Typeexe
Size586.0 KB
First Seen2025-07-22
File NameMinutes of Meeting.pdf.exe
Tagsexe, MassLogger

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: 019f809d35950f9c45a9f2b33b2fa85b17829481aac37124b28478c9f0faf71c
  • MD5: 2053b07e67e71dd9ba69c50d77f2b498

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: 019f809d35950f9c"
        threat_level = "medium"
        first_seen = "2025-07-22"
    condition:
        hash.sha256(0, filesize) == "019f809d35950f9c45a9f2b33b2fa85b17829481aac37124b28478c9f0faf71c"
}

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 019f809d35950f9c45a9f2b33b2fa85b17829481aac37124b28478c9f0faf71c # MD5 2053b07e67e71dd9ba69c50d77f2b498
TypeValueNote
sha256 019f809d35950f9c45a9f2b33b2fa85b17829481aac37124b28478c9f0faf71c Sample:MassLogger
md5 2053b07e67e71dd9ba69c50d77f2b498 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi