MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25683417bc16a7958a548395b36634b974b4e90dea3f94a1685a33c27c6c72db24d
MD5893f7523844cfb54071ee1b43b74673c
File Typeexe
Size911.0 KB
First Seen2026-03-31
File NameSecuriteInfo.com.Win32.MalwareX-gen.31488122
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: 83417bc16a7958a548395b36634b974b4e90dea3f94a1685a33c27c6c72db24d
  • MD5: 893f7523844cfb54071ee1b43b74673c

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: 83417bc16a7958a5"
        threat_level = "medium"
        first_seen = "2026-03-31"
    condition:
        hash.sha256(0, filesize) == "83417bc16a7958a548395b36634b974b4e90dea3f94a1685a33c27c6c72db24d"
}

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 83417bc16a7958a548395b36634b974b4e90dea3f94a1685a33c27c6c72db24d # MD5 893f7523844cfb54071ee1b43b74673c
TypeValueNote
sha256 83417bc16a7958a548395b36634b974b4e90dea3f94a1685a33c27c6c72db24d Sample:MassLogger
md5 893f7523844cfb54071ee1b43b74673c Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi