MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25644380d8f73e4fddb23e896d80b0e65b87d07fb8a9275fe8998796f71b112ecb6
MD5593d85d585d0ccce8de70194fa3ae632
File Typerar
Size439.9 KB
First Seen2025-07-16
File NamePurchase_Order_35789.rar
TagsMassLogger, rar

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: 44380d8f73e4fddb23e896d80b0e65b87d07fb8a9275fe8998796f71b112ecb6
  • MD5: 593d85d585d0ccce8de70194fa3ae632

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: 44380d8f73e4fddb"
        threat_level = "medium"
        first_seen = "2025-07-16"
    condition:
        hash.sha256(0, filesize) == "44380d8f73e4fddb23e896d80b0e65b87d07fb8a9275fe8998796f71b112ecb6"
}

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 44380d8f73e4fddb23e896d80b0e65b87d07fb8a9275fe8998796f71b112ecb6 # MD5 593d85d585d0ccce8de70194fa3ae632
TypeValueNote
sha256 44380d8f73e4fddb23e896d80b0e65b87d07fb8a9275fe8998796f71b112ecb6 Sample:MassLogger
md5 593d85d585d0ccce8de70194fa3ae632 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi