MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256256b9eb0b0ef69eeee00712c0e9fab59601934633f2bb6d0a0b10ac04bd5b2ab
MD5a9c5c2a2ab6289eae0a3320287444bda
File Typeexe
Size1132.0 KB
First Seen2026-01-27
File NameTeklif İsteği 27-10-2026_PDF.exe
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: 256b9eb0b0ef69eeee00712c0e9fab59601934633f2bb6d0a0b10ac04bd5b2ab
  • MD5: a9c5c2a2ab6289eae0a3320287444bda

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: 256b9eb0b0ef69ee"
        threat_level = "medium"
        first_seen = "2026-01-27"
    condition:
        hash.sha256(0, filesize) == "256b9eb0b0ef69eeee00712c0e9fab59601934633f2bb6d0a0b10ac04bd5b2ab"
}

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 256b9eb0b0ef69eeee00712c0e9fab59601934633f2bb6d0a0b10ac04bd5b2ab # MD5 a9c5c2a2ab6289eae0a3320287444bda
TypeValueNote
sha256 256b9eb0b0ef69eeee00712c0e9fab59601934633f2bb6d0a0b10ac04bd5b2ab Sample:MassLogger
md5 a9c5c2a2ab6289eae0a3320287444bda Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi