MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25601e2b4512e5ed7a82b61736ae1be85b041a5b6df2ad9f739c7ce27c91820e63e
MD5c9662d8ec02bf44bd7edd2ed7ec55fab
File Typevbe
Size827.0 KB
First Seen2025-06-17
File Namerck99088765.vbe
TagsMassLogger, 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: 01e2b4512e5ed7a82b61736ae1be85b041a5b6df2ad9f739c7ce27c91820e63e
  • MD5: c9662d8ec02bf44bd7edd2ed7ec55fab

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: 01e2b4512e5ed7a8"
        threat_level = "medium"
        first_seen = "2025-06-17"
    condition:
        hash.sha256(0, filesize) == "01e2b4512e5ed7a82b61736ae1be85b041a5b6df2ad9f739c7ce27c91820e63e"
}

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 01e2b4512e5ed7a82b61736ae1be85b041a5b6df2ad9f739c7ce27c91820e63e # MD5 c9662d8ec02bf44bd7edd2ed7ec55fab
TypeValueNote
sha256 01e2b4512e5ed7a82b61736ae1be85b041a5b6df2ad9f739c7ce27c91820e63e Sample:MassLogger
md5 c9662d8ec02bf44bd7edd2ed7ec55fab Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi