MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25618daef9e3e931cc07c146562f97d64bc5257672d38b17a45cc619b03865840ec
MD5521c5366121b528e6844bb476730ac7d
File Typejs
Size3844.1 KB
First Seen2026-06-12
File Nameorden de compras.js
Tagsjs, 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: 18daef9e3e931cc07c146562f97d64bc5257672d38b17a45cc619b03865840ec
  • MD5: 521c5366121b528e6844bb476730ac7d

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: 18daef9e3e931cc0"
        threat_level = "medium"
        first_seen = "2026-06-12"
    condition:
        hash.sha256(0, filesize) == "18daef9e3e931cc07c146562f97d64bc5257672d38b17a45cc619b03865840ec"
}

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 18daef9e3e931cc07c146562f97d64bc5257672d38b17a45cc619b03865840ec # MD5 521c5366121b528e6844bb476730ac7d
TypeValueNote
sha256 18daef9e3e931cc07c146562f97d64bc5257672d38b17a45cc619b03865840ec Sample:MassLogger
md5 521c5366121b528e6844bb476730ac7d Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi