MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256fb045f216f6a05f75d76db11e90f276ce138a04fb50350d806358f5e1190f48e
MD56d06edc43eb791e8ed7c6ec2c279f7b8
File Typehta
Size2297.9 KB
First Seen2026-06-03
File Namercko009434.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: fb045f216f6a05f75d76db11e90f276ce138a04fb50350d806358f5e1190f48e
  • MD5: 6d06edc43eb791e8ed7c6ec2c279f7b8

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: fb045f216f6a05f7"
        threat_level = "medium"
        first_seen = "2026-06-03"
    condition:
        hash.sha256(0, filesize) == "fb045f216f6a05f75d76db11e90f276ce138a04fb50350d806358f5e1190f48e"
}

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 fb045f216f6a05f75d76db11e90f276ce138a04fb50350d806358f5e1190f48e # MD5 6d06edc43eb791e8ed7c6ec2c279f7b8
TypeValueNote
sha256 fb045f216f6a05f75d76db11e90f276ce138a04fb50350d806358f5e1190f48e Sample:MassLogger
md5 6d06edc43eb791e8ed7c6ec2c279f7b8 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi