MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256f88c9d5d711761dbeb26d0a6c5047a7f21e95b7732083f7e76e315d935eb5fe0
MD54267adc4b6c6017afcf25ec75a0f0ed1
File Typeexe
Size866.0 KB
First Seen2026-05-20
File NameÜRÜNLERİN_ÇİZİMİ_VE_AÇIKLAMASI_PDF.exe
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: f88c9d5d711761dbeb26d0a6c5047a7f21e95b7732083f7e76e315d935eb5fe0
  • MD5: 4267adc4b6c6017afcf25ec75a0f0ed1

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: f88c9d5d711761db"
        threat_level = "medium"
        first_seen = "2026-05-20"
    condition:
        hash.sha256(0, filesize) == "f88c9d5d711761dbeb26d0a6c5047a7f21e95b7732083f7e76e315d935eb5fe0"
}

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 f88c9d5d711761dbeb26d0a6c5047a7f21e95b7732083f7e76e315d935eb5fe0 # MD5 4267adc4b6c6017afcf25ec75a0f0ed1
TypeValueNote
sha256 f88c9d5d711761dbeb26d0a6c5047a7f21e95b7732083f7e76e315d935eb5fe0 Sample:MassLogger
md5 4267adc4b6c6017afcf25ec75a0f0ed1 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi