MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2565996e210f83d265a0c745ff669c388a834aedd25426ecee6ddc59111d06eefb0
MD5191398dd9436c4940f9332e691cc305e
File Typeexe
Size1004.0 KB
First Seen2026-04-08
File Namee-dekont_html.exe
Tagsexe, 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: 5996e210f83d265a0c745ff669c388a834aedd25426ecee6ddc59111d06eefb0
  • MD5: 191398dd9436c4940f9332e691cc305e

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: 5996e210f83d265a"
        threat_level = "medium"
        first_seen = "2026-04-08"
    condition:
        hash.sha256(0, filesize) == "5996e210f83d265a0c745ff669c388a834aedd25426ecee6ddc59111d06eefb0"
}

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 5996e210f83d265a0c745ff669c388a834aedd25426ecee6ddc59111d06eefb0 # MD5 191398dd9436c4940f9332e691cc305e
TypeValueNote
sha256 5996e210f83d265a0c745ff669c388a834aedd25426ecee6ddc59111d06eefb0 Sample:MassLogger
md5 191398dd9436c4940f9332e691cc305e Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi