MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25663a108485dc2d657dbc9065711b1901f7ff7975321eae9fbfe2305b9fb5c721f
MD52d05743d427b07374cc11f35efc84e44
File Typevbs
Size1073.4 KB
First Seen2026-03-09
File Name776mb664732y.pdf.vbs
TagsMassLogger, vbs

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: 63a108485dc2d657dbc9065711b1901f7ff7975321eae9fbfe2305b9fb5c721f
  • MD5: 2d05743d427b07374cc11f35efc84e44

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: 63a108485dc2d657"
        threat_level = "medium"
        first_seen = "2026-03-09"
    condition:
        hash.sha256(0, filesize) == "63a108485dc2d657dbc9065711b1901f7ff7975321eae9fbfe2305b9fb5c721f"
}

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 63a108485dc2d657dbc9065711b1901f7ff7975321eae9fbfe2305b9fb5c721f # MD5 2d05743d427b07374cc11f35efc84e44
TypeValueNote
sha256 63a108485dc2d657dbc9065711b1901f7ff7975321eae9fbfe2305b9fb5c721f Sample:MassLogger
md5 2d05743d427b07374cc11f35efc84e44 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi