MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256633326457f86d0a12d3ff263f3a2f4f2d8325ef94fe3f20e6d74c3f1e72f6aa6
MD5831d505ce0a74efee5ec33fabbc46aa9
File Typeexe
Size710.0 KB
First Seen2025-08-14
File Namedekont_html.exe
Tagsexe, geo, MassLogger, TUR

Malware Family: MassLogger

MassLogger, email keylogger'dır.

TypeInfostealer
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeEmail keylogger
First Seen Year2020

Threat Indicators (IOC)

  • SHA256: 633326457f86d0a12d3ff263f3a2f4f2d8325ef94fe3f20e6d74c3f1e72f6aa6
  • MD5: 831d505ce0a74efee5ec33fabbc46aa9

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: 633326457f86d0a1"
        threat_level = "medium"
        first_seen = "2025-08-14"
    condition:
        hash.sha256(0, filesize) == "633326457f86d0a12d3ff263f3a2f4f2d8325ef94fe3f20e6d74c3f1e72f6aa6"
}

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 633326457f86d0a12d3ff263f3a2f4f2d8325ef94fe3f20e6d74c3f1e72f6aa6 # MD5 831d505ce0a74efee5ec33fabbc46aa9
TypeValueNote
sha256 633326457f86d0a12d3ff263f3a2f4f2d8325ef94fe3f20e6d74c3f1e72f6aa6 Sample:MassLogger
md5 831d505ce0a74efee5ec33fabbc46aa9 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi