MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256f444b36b457dfcbe9f2ce3d8c6766c5886f568b6ce1a2b01b43ec9ea0f650243
MD581220d157d2a87c0ce688597163740a1
File Typeexe
Size540.5 KB
First Seen2026-02-13
File NameSecuriteInfo.com.Win32.MalwareX-gen.81473582
Tagsexe, MassLogger

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: f444b36b457dfcbe9f2ce3d8c6766c5886f568b6ce1a2b01b43ec9ea0f650243
  • MD5: 81220d157d2a87c0ce688597163740a1

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: f444b36b457dfcbe"
        threat_level = "medium"
        first_seen = "2026-02-13"
    condition:
        hash.sha256(0, filesize) == "f444b36b457dfcbe9f2ce3d8c6766c5886f568b6ce1a2b01b43ec9ea0f650243"
}

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 f444b36b457dfcbe9f2ce3d8c6766c5886f568b6ce1a2b01b43ec9ea0f650243 # MD5 81220d157d2a87c0ce688597163740a1
TypeValueNote
sha256 f444b36b457dfcbe9f2ce3d8c6766c5886f568b6ce1a2b01b43ec9ea0f650243 Sample:MassLogger
md5 81220d157d2a87c0ce688597163740a1 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi