MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2569e544fecd4a69e21e3805ce2c5e32d0fcd40144c75b57fab791759d4f261161b
MD5419a51ed5e6546cac7015975e1e964f4
File Typeexe
Size927.5 KB
First Seen2025-06-17
File NameCarta de porte aéreo de DHL #6829514383-PDF.exe
TagsDHL, exe, 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: 9e544fecd4a69e21e3805ce2c5e32d0fcd40144c75b57fab791759d4f261161b
  • MD5: 419a51ed5e6546cac7015975e1e964f4

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: 9e544fecd4a69e21"
        threat_level = "medium"
        first_seen = "2025-06-17"
    condition:
        hash.sha256(0, filesize) == "9e544fecd4a69e21e3805ce2c5e32d0fcd40144c75b57fab791759d4f261161b"
}

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 9e544fecd4a69e21e3805ce2c5e32d0fcd40144c75b57fab791759d4f261161b # MD5 419a51ed5e6546cac7015975e1e964f4
TypeValueNote
sha256 9e544fecd4a69e21e3805ce2c5e32d0fcd40144c75b57fab791759d4f261161b Sample:MassLogger
md5 419a51ed5e6546cac7015975e1e964f4 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi