MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2569a94e891e348c3b34f1087fc5bd0f4d54f01f7ac6c6e58ae558d24e25013587b
MD5e59937538139c8d22073c1af5b95a045
File Typeexe
Size699.0 KB
First Seen2025-08-13
File NameÇİZİM ÖZELLİKLERİ VE DESEN.pif
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: 9a94e891e348c3b34f1087fc5bd0f4d54f01f7ac6c6e58ae558d24e25013587b
  • MD5: e59937538139c8d22073c1af5b95a045

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: 9a94e891e348c3b3"
        threat_level = "medium"
        first_seen = "2025-08-13"
    condition:
        hash.sha256(0, filesize) == "9a94e891e348c3b34f1087fc5bd0f4d54f01f7ac6c6e58ae558d24e25013587b"
}

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 9a94e891e348c3b34f1087fc5bd0f4d54f01f7ac6c6e58ae558d24e25013587b # MD5 e59937538139c8d22073c1af5b95a045
TypeValueNote
sha256 9a94e891e348c3b34f1087fc5bd0f4d54f01f7ac6c6e58ae558d24e25013587b Sample:MassLogger
md5 e59937538139c8d22073c1af5b95a045 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi