MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256649705cb425bf5f1054b77e1608de06939b75e8d45ce09ef1b2dfdbc915711cb
MD5520a2c8c88233776ca2c57829cb53d15
File Typeexe
Size709.5 KB
First Seen2025-08-14
File NameSecuriteInfo.com.Trojan.PackedNET.3392.29552.6689
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: 649705cb425bf5f1054b77e1608de06939b75e8d45ce09ef1b2dfdbc915711cb
  • MD5: 520a2c8c88233776ca2c57829cb53d15

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: 649705cb425bf5f1"
        threat_level = "medium"
        first_seen = "2025-08-14"
    condition:
        hash.sha256(0, filesize) == "649705cb425bf5f1054b77e1608de06939b75e8d45ce09ef1b2dfdbc915711cb"
}

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 649705cb425bf5f1054b77e1608de06939b75e8d45ce09ef1b2dfdbc915711cb # MD5 520a2c8c88233776ca2c57829cb53d15
TypeValueNote
sha256 649705cb425bf5f1054b77e1608de06939b75e8d45ce09ef1b2dfdbc915711cb Sample:MassLogger
md5 520a2c8c88233776ca2c57829cb53d15 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi