MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2563cb5f6bde1e261e82ef04429734d27fee1de4c065a043610e78331a02eda9722
MD56405d7c16eb9fbf7671507e79052cfc0
File Typehta
Size2901.6 KB
First Seen2026-06-05
File NameDekont1.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: 3cb5f6bde1e261e82ef04429734d27fee1de4c065a043610e78331a02eda9722
  • MD5: 6405d7c16eb9fbf7671507e79052cfc0

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: 3cb5f6bde1e261e8"
        threat_level = "medium"
        first_seen = "2026-06-05"
    condition:
        hash.sha256(0, filesize) == "3cb5f6bde1e261e82ef04429734d27fee1de4c065a043610e78331a02eda9722"
}

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 3cb5f6bde1e261e82ef04429734d27fee1de4c065a043610e78331a02eda9722 # MD5 6405d7c16eb9fbf7671507e79052cfc0
TypeValueNote
sha256 3cb5f6bde1e261e82ef04429734d27fee1de4c065a043610e78331a02eda9722 Sample:MassLogger
md5 6405d7c16eb9fbf7671507e79052cfc0 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi