MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2565c82926dcfe153897efdded797f6b674e7b0430b2ec553667efd8158f3f34dd7
MD5ec2f01d7b4aff8d6c9b626be604316db
File Typevbe
Size986.1 KB
First Seen2025-08-20
File NameEkstre_001908.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: 5c82926dcfe153897efdded797f6b674e7b0430b2ec553667efd8158f3f34dd7
  • MD5: ec2f01d7b4aff8d6c9b626be604316db

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: 5c82926dcfe15389"
        threat_level = "medium"
        first_seen = "2025-08-20"
    condition:
        hash.sha256(0, filesize) == "5c82926dcfe153897efdded797f6b674e7b0430b2ec553667efd8158f3f34dd7"
}

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 5c82926dcfe153897efdded797f6b674e7b0430b2ec553667efd8158f3f34dd7 # MD5 ec2f01d7b4aff8d6c9b626be604316db
TypeValueNote
sha256 5c82926dcfe153897efdded797f6b674e7b0430b2ec553667efd8158f3f34dd7 Sample:MassLogger
md5 ec2f01d7b4aff8d6c9b626be604316db Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi