MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2569cc0ec6a21bd5a6623933e5d35f40cf3d5f3bc9465c0e848b6b39fe8fe1c7038
MD5188029eb1ab18abc89805a4da974605f
File Typeexe
Size774.5 KB
First Seen2025-09-03
File NameSecuriteInfo.com.Win32.MalwareX-gen.86322691
Tagsexe, MassLogger

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: 9cc0ec6a21bd5a6623933e5d35f40cf3d5f3bc9465c0e848b6b39fe8fe1c7038
  • MD5: 188029eb1ab18abc89805a4da974605f

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: 9cc0ec6a21bd5a66"
        threat_level = "medium"
        first_seen = "2025-09-03"
    condition:
        hash.sha256(0, filesize) == "9cc0ec6a21bd5a6623933e5d35f40cf3d5f3bc9465c0e848b6b39fe8fe1c7038"
}

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 9cc0ec6a21bd5a6623933e5d35f40cf3d5f3bc9465c0e848b6b39fe8fe1c7038 # MD5 188029eb1ab18abc89805a4da974605f
TypeValueNote
sha256 9cc0ec6a21bd5a6623933e5d35f40cf3d5f3bc9465c0e848b6b39fe8fe1c7038 Sample:MassLogger
md5 188029eb1ab18abc89805a4da974605f Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi