MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25678e4582e6f6efb9def82e467566458cf71b8a150f7d6ee2ec5d5a6f4b828b8d9
MD528a3d9ee7c63837ec70b5c4022690208
File Typeexe
Size597.0 KB
First Seen2025-06-06
File Name78e4582e6f6efb9def82e467566458cf71b8a150f7d6ee2ec5d5a6f4b828b8d9
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: 78e4582e6f6efb9def82e467566458cf71b8a150f7d6ee2ec5d5a6f4b828b8d9
  • MD5: 28a3d9ee7c63837ec70b5c4022690208

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: 78e4582e6f6efb9d"
        threat_level = "medium"
        first_seen = "2025-06-06"
    condition:
        hash.sha256(0, filesize) == "78e4582e6f6efb9def82e467566458cf71b8a150f7d6ee2ec5d5a6f4b828b8d9"
}

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 78e4582e6f6efb9def82e467566458cf71b8a150f7d6ee2ec5d5a6f4b828b8d9 # MD5 28a3d9ee7c63837ec70b5c4022690208
TypeValueNote
sha256 78e4582e6f6efb9def82e467566458cf71b8a150f7d6ee2ec5d5a6f4b828b8d9 Sample:MassLogger
md5 28a3d9ee7c63837ec70b5c4022690208 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi