MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2567b13d7f29b1baf4deb469eb9b8ba3ed64061dc8614de31e5b04e272fdc4de900
MD53d2c9ed904ff7ed6b8a698d528020a7b
File Typejs
Size789.5 KB
First Seen2026-06-09
File NameAngebot 15492026 & 15602026.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: 7b13d7f29b1baf4deb469eb9b8ba3ed64061dc8614de31e5b04e272fdc4de900
  • MD5: 3d2c9ed904ff7ed6b8a698d528020a7b

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: 7b13d7f29b1baf4d"
        threat_level = "medium"
        first_seen = "2026-06-09"
    condition:
        hash.sha256(0, filesize) == "7b13d7f29b1baf4deb469eb9b8ba3ed64061dc8614de31e5b04e272fdc4de900"
}

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 7b13d7f29b1baf4deb469eb9b8ba3ed64061dc8614de31e5b04e272fdc4de900 # MD5 3d2c9ed904ff7ed6b8a698d528020a7b
TypeValueNote
sha256 7b13d7f29b1baf4deb469eb9b8ba3ed64061dc8614de31e5b04e272fdc4de900 Sample:MassLogger
md5 3d2c9ed904ff7ed6b8a698d528020a7b Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi