MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2567acf9b7e0c881e207e7ae71860b35ec4fa6f909b1e193527774d8588efa51833
MD5eae7a4d4f2d5e214fb4b3f62ca72c8fd
File Typeexe
Size1048.5 KB
First Seen2026-06-08
File Name7acf9b7e0c881e207e7ae71860b35ec4fa6f909b1e193527774d8588efa51833
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: 7acf9b7e0c881e207e7ae71860b35ec4fa6f909b1e193527774d8588efa51833
  • MD5: eae7a4d4f2d5e214fb4b3f62ca72c8fd

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: 7acf9b7e0c881e20"
        threat_level = "medium"
        first_seen = "2026-06-08"
    condition:
        hash.sha256(0, filesize) == "7acf9b7e0c881e207e7ae71860b35ec4fa6f909b1e193527774d8588efa51833"
}

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 7acf9b7e0c881e207e7ae71860b35ec4fa6f909b1e193527774d8588efa51833 # MD5 eae7a4d4f2d5e214fb4b3f62ca72c8fd
TypeValueNote
sha256 7acf9b7e0c881e207e7ae71860b35ec4fa6f909b1e193527774d8588efa51833 Sample:MassLogger
md5 eae7a4d4f2d5e214fb4b3f62ca72c8fd Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi