MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2565ed8a508c7bc69b2a117f713ed2616a7c93fa650578b2a08eaed8be2fd282a72
MD5e4898a38a1f8ae84dcc9fd4366a219b7
File Typehta
Size34.9 KB
First Seen2026-06-23
File NameSIPARIS N°835.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: 5ed8a508c7bc69b2a117f713ed2616a7c93fa650578b2a08eaed8be2fd282a72
  • MD5: e4898a38a1f8ae84dcc9fd4366a219b7

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: 5ed8a508c7bc69b2"
        threat_level = "medium"
        first_seen = "2026-06-23"
    condition:
        hash.sha256(0, filesize) == "5ed8a508c7bc69b2a117f713ed2616a7c93fa650578b2a08eaed8be2fd282a72"
}

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 5ed8a508c7bc69b2a117f713ed2616a7c93fa650578b2a08eaed8be2fd282a72 # MD5 e4898a38a1f8ae84dcc9fd4366a219b7
TypeValueNote
sha256 5ed8a508c7bc69b2a117f713ed2616a7c93fa650578b2a08eaed8be2fd282a72 Sample:MassLogger
md5 e4898a38a1f8ae84dcc9fd4366a219b7 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi