MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256340d44d2823cbb4630451f02fbf087f246c91d93ba89716af630fa7c0c6d35ed
MD58daee673ad1af44606a43cabd030e4ee
File Typebat
Size118.5 KB
First Seen2026-04-07
File NameBurhan services-Enquiry-G24103-DSTM36.bat
Tagsbat, 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: 340d44d2823cbb4630451f02fbf087f246c91d93ba89716af630fa7c0c6d35ed
  • MD5: 8daee673ad1af44606a43cabd030e4ee

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: 340d44d2823cbb46"
        threat_level = "medium"
        first_seen = "2026-04-07"
    condition:
        hash.sha256(0, filesize) == "340d44d2823cbb4630451f02fbf087f246c91d93ba89716af630fa7c0c6d35ed"
}

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 340d44d2823cbb4630451f02fbf087f246c91d93ba89716af630fa7c0c6d35ed # MD5 8daee673ad1af44606a43cabd030e4ee
TypeValueNote
sha256 340d44d2823cbb4630451f02fbf087f246c91d93ba89716af630fa7c0c6d35ed Sample:MassLogger
md5 8daee673ad1af44606a43cabd030e4ee Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi