MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2563f2a428fd841cfcc962fc2f384208a4226845394bb253341dbe1fff05069a2c8
MD5a5a4b90ea44af02de4f505e0096a1911
File Typeexe
Size577.5 KB
First Seen2025-10-09
File Name3f2a428fd841cfcc962fc2f384208a4226845394bb253341dbe1fff05069a2c8
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: 3f2a428fd841cfcc962fc2f384208a4226845394bb253341dbe1fff05069a2c8
  • MD5: a5a4b90ea44af02de4f505e0096a1911

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: 3f2a428fd841cfcc"
        threat_level = "medium"
        first_seen = "2025-10-09"
    condition:
        hash.sha256(0, filesize) == "3f2a428fd841cfcc962fc2f384208a4226845394bb253341dbe1fff05069a2c8"
}

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 3f2a428fd841cfcc962fc2f384208a4226845394bb253341dbe1fff05069a2c8 # MD5 a5a4b90ea44af02de4f505e0096a1911
TypeValueNote
sha256 3f2a428fd841cfcc962fc2f384208a4226845394bb253341dbe1fff05069a2c8 Sample:MassLogger
md5 a5a4b90ea44af02de4f505e0096a1911 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi