MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256f793d57a82f5ddbae9f1555b500d3e4d7129adc070d8e69ee5dc45b3be054e97
MD539dc94416d628122eaa07b97cb959036
File Typeexe
Size903.5 KB
First Seen2026-03-06
File Namef793d57a82f5ddbae9f1555b500d3e4d7129adc070d8e69ee5dc45b3be054e97
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: f793d57a82f5ddbae9f1555b500d3e4d7129adc070d8e69ee5dc45b3be054e97
  • MD5: 39dc94416d628122eaa07b97cb959036

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: f793d57a82f5ddba"
        threat_level = "medium"
        first_seen = "2026-03-06"
    condition:
        hash.sha256(0, filesize) == "f793d57a82f5ddbae9f1555b500d3e4d7129adc070d8e69ee5dc45b3be054e97"
}

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 f793d57a82f5ddbae9f1555b500d3e4d7129adc070d8e69ee5dc45b3be054e97 # MD5 39dc94416d628122eaa07b97cb959036
TypeValueNote
sha256 f793d57a82f5ddbae9f1555b500d3e4d7129adc070d8e69ee5dc45b3be054e97 Sample:MassLogger
md5 39dc94416d628122eaa07b97cb959036 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi