MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256a384e1b12a840bfd8018705862884c133ae09fc8d0cbbbe66de1649a58355c7a
MD56e3d80ddd22333f81ee5eb851e9e6075
File Typeexe
Size729.0 KB
First Seen2025-06-10
File Namea384e1b12a840bfd8018705862884c133ae09fc8d0cbbbe66de1649a58355c7a
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: a384e1b12a840bfd8018705862884c133ae09fc8d0cbbbe66de1649a58355c7a
  • MD5: 6e3d80ddd22333f81ee5eb851e9e6075

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: a384e1b12a840bfd"
        threat_level = "medium"
        first_seen = "2025-06-10"
    condition:
        hash.sha256(0, filesize) == "a384e1b12a840bfd8018705862884c133ae09fc8d0cbbbe66de1649a58355c7a"
}

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 a384e1b12a840bfd8018705862884c133ae09fc8d0cbbbe66de1649a58355c7a # MD5 6e3d80ddd22333f81ee5eb851e9e6075
TypeValueNote
sha256 a384e1b12a840bfd8018705862884c133ae09fc8d0cbbbe66de1649a58355c7a Sample:MassLogger
md5 6e3d80ddd22333f81ee5eb851e9e6075 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi