MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256b8662a3186a33f8b9f91351e0bb0f507b8ad335ddc11e6a2e162e075b10cc8fe
MD5a34a48c59cdb0cd8ee9bf498b7566534
File Typevbe
Size544.2 KB
First Seen2025-10-14
File NameTEKLİF FORMU 15635.VBE
Tagsgeo, MassLogger, TUR, vbe

Malware Family: MassLogger

MassLogger, email keylogger'dır.

TypeInfostealer
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeEmail keylogger
First Seen Year2020

Threat Indicators (IOC)

  • SHA256: b8662a3186a33f8b9f91351e0bb0f507b8ad335ddc11e6a2e162e075b10cc8fe
  • MD5: a34a48c59cdb0cd8ee9bf498b7566534

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: b8662a3186a33f8b"
        threat_level = "medium"
        first_seen = "2025-10-14"
    condition:
        hash.sha256(0, filesize) == "b8662a3186a33f8b9f91351e0bb0f507b8ad335ddc11e6a2e162e075b10cc8fe"
}

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 b8662a3186a33f8b9f91351e0bb0f507b8ad335ddc11e6a2e162e075b10cc8fe # MD5 a34a48c59cdb0cd8ee9bf498b7566534
TypeValueNote
sha256 b8662a3186a33f8b9f91351e0bb0f507b8ad335ddc11e6a2e162e075b10cc8fe Sample:MassLogger
md5 a34a48c59cdb0cd8ee9bf498b7566534 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi