MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256c742bd7fa209e0a22d2710d192373e6a305355355ff8e1e1d91d2293cfc3e28f
MD562a6ad41fd7c85382677f4dd97c20117
File Typeexe
Size593.5 KB
First Seen2025-06-17
File NameSecuriteInfo.com.Win32.MalwareX-gen.20179.6838
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: c742bd7fa209e0a22d2710d192373e6a305355355ff8e1e1d91d2293cfc3e28f
  • MD5: 62a6ad41fd7c85382677f4dd97c20117

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: c742bd7fa209e0a2"
        threat_level = "medium"
        first_seen = "2025-06-17"
    condition:
        hash.sha256(0, filesize) == "c742bd7fa209e0a22d2710d192373e6a305355355ff8e1e1d91d2293cfc3e28f"
}

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 c742bd7fa209e0a22d2710d192373e6a305355355ff8e1e1d91d2293cfc3e28f # MD5 62a6ad41fd7c85382677f4dd97c20117
TypeValueNote
sha256 c742bd7fa209e0a22d2710d192373e6a305355355ff8e1e1d91d2293cfc3e28f Sample:MassLogger
md5 62a6ad41fd7c85382677f4dd97c20117 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi