MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256063f4715cbacd71b07e2bc0a7f47d5e859e081c2dd9182f32cbbf39938095edf
MD580986c4842784c82591634809f8b2baa
File Typejs
Size3790.9 KB
First Seen2026-06-15
File NameOrden de compra_26452.pdf.js
Tagsexe, js, 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: 063f4715cbacd71b07e2bc0a7f47d5e859e081c2dd9182f32cbbf39938095edf
  • MD5: 80986c4842784c82591634809f8b2baa

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: 063f4715cbacd71b"
        threat_level = "medium"
        first_seen = "2026-06-15"
    condition:
        hash.sha256(0, filesize) == "063f4715cbacd71b07e2bc0a7f47d5e859e081c2dd9182f32cbbf39938095edf"
}

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 063f4715cbacd71b07e2bc0a7f47d5e859e081c2dd9182f32cbbf39938095edf # MD5 80986c4842784c82591634809f8b2baa
TypeValueNote
sha256 063f4715cbacd71b07e2bc0a7f47d5e859e081c2dd9182f32cbbf39938095edf Sample:MassLogger
md5 80986c4842784c82591634809f8b2baa Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi