MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25671d86f769000ceee4fde80551128119ce2a31d0da6bb2ce29f0a725e726c081e
MD5d4f85dc28ba0770553b98f448f9e18d5
File Typehta
Size527.3 KB
First Seen2026-07-01
File Namerckk8896011.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: 71d86f769000ceee4fde80551128119ce2a31d0da6bb2ce29f0a725e726c081e
  • MD5: d4f85dc28ba0770553b98f448f9e18d5

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: 71d86f769000ceee"
        threat_level = "medium"
        first_seen = "2026-07-01"
    condition:
        hash.sha256(0, filesize) == "71d86f769000ceee4fde80551128119ce2a31d0da6bb2ce29f0a725e726c081e"
}

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 71d86f769000ceee4fde80551128119ce2a31d0da6bb2ce29f0a725e726c081e # MD5 d4f85dc28ba0770553b98f448f9e18d5
TypeValueNote
sha256 71d86f769000ceee4fde80551128119ce2a31d0da6bb2ce29f0a725e726c081e Sample:MassLogger
md5 d4f85dc28ba0770553b98f448f9e18d5 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi