MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25656f14ce40e19fb067daf65a973dca1ca3c319834ced645613d72535db37882eb
MD5c682e38eb3d3cc288281744853dd5113
File Typehta
Size2995.4 KB
First Seen2026-06-10
File Namerckki98773.hta
Tagshta, MassLogger

Malware Family: MassLogger

MassLogger, email tabanlı keylogger'dır.

TypeInfostealer
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeEmail keylogger
First Seen Year2020

Threat Indicators (IOC)

  • SHA256: 56f14ce40e19fb067daf65a973dca1ca3c319834ced645613d72535db37882eb
  • MD5: c682e38eb3d3cc288281744853dd5113

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: 56f14ce40e19fb06"
        threat_level = "medium"
        first_seen = "2026-06-10"
    condition:
        hash.sha256(0, filesize) == "56f14ce40e19fb067daf65a973dca1ca3c319834ced645613d72535db37882eb"
}

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 56f14ce40e19fb067daf65a973dca1ca3c319834ced645613d72535db37882eb # MD5 c682e38eb3d3cc288281744853dd5113
TypeValueNote
sha256 56f14ce40e19fb067daf65a973dca1ca3c319834ced645613d72535db37882eb Sample:MassLogger
md5 c682e38eb3d3cc288281744853dd5113 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi