MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256aa1d89d765677c3e77dd3f770e4764ab7df654f453e661562fcf379d715d5c52
MD589527ceff6f846b59f94b80b8763889f
File Typevbe
Size986.1 KB
First Seen2025-08-22
File Namee-dekont.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: aa1d89d765677c3e77dd3f770e4764ab7df654f453e661562fcf379d715d5c52
  • MD5: 89527ceff6f846b59f94b80b8763889f

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: aa1d89d765677c3e"
        threat_level = "medium"
        first_seen = "2025-08-22"
    condition:
        hash.sha256(0, filesize) == "aa1d89d765677c3e77dd3f770e4764ab7df654f453e661562fcf379d715d5c52"
}

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 aa1d89d765677c3e77dd3f770e4764ab7df654f453e661562fcf379d715d5c52 # MD5 89527ceff6f846b59f94b80b8763889f
TypeValueNote
sha256 aa1d89d765677c3e77dd3f770e4764ab7df654f453e661562fcf379d715d5c52 Sample:MassLogger
md5 89527ceff6f846b59f94b80b8763889f Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi