MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25694bb78e14aecb78ccdf23d7c4658045289f612ee7b9b3e9e9f4ad74b0bdc0a00
MD5a2948b63b822417b68bab6a0345b7c35
File Typejs
Size8752.5 KB
First Seen2026-05-11
File Name94bb78e14aecb78ccdf23d7c4658045289f612ee7b9b3e9e9f4ad74b0bdc0a00.js
Tagsjs, MassLogger, Orio-Xrio

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: 94bb78e14aecb78ccdf23d7c4658045289f612ee7b9b3e9e9f4ad74b0bdc0a00
  • MD5: a2948b63b822417b68bab6a0345b7c35

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: 94bb78e14aecb78c"
        threat_level = "medium"
        first_seen = "2026-05-11"
    condition:
        hash.sha256(0, filesize) == "94bb78e14aecb78ccdf23d7c4658045289f612ee7b9b3e9e9f4ad74b0bdc0a00"
}

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 94bb78e14aecb78ccdf23d7c4658045289f612ee7b9b3e9e9f4ad74b0bdc0a00 # MD5 a2948b63b822417b68bab6a0345b7c35
TypeValueNote
sha256 94bb78e14aecb78ccdf23d7c4658045289f612ee7b9b3e9e9f4ad74b0bdc0a00 Sample:MassLogger
md5 a2948b63b822417b68bab6a0345b7c35 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi