MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2567b719dd29b4ee039d989228d8c1c5cbadd84fbb66467bc6b6c980026d9753d45
MD5a24960074f6b55c3937dfb4d3537aad1
File Typevbe
Size986.1 KB
First Seen2025-08-22
File Namerokk998054.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: 7b719dd29b4ee039d989228d8c1c5cbadd84fbb66467bc6b6c980026d9753d45
  • MD5: a24960074f6b55c3937dfb4d3537aad1

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: 7b719dd29b4ee039"
        threat_level = "medium"
        first_seen = "2025-08-22"
    condition:
        hash.sha256(0, filesize) == "7b719dd29b4ee039d989228d8c1c5cbadd84fbb66467bc6b6c980026d9753d45"
}

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 7b719dd29b4ee039d989228d8c1c5cbadd84fbb66467bc6b6c980026d9753d45 # MD5 a24960074f6b55c3937dfb4d3537aad1
TypeValueNote
sha256 7b719dd29b4ee039d989228d8c1c5cbadd84fbb66467bc6b6c980026d9753d45 Sample:MassLogger
md5 a24960074f6b55c3937dfb4d3537aad1 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi