MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256330bad5ede053221123bca714de49be678bbfcf42127b4e1b9d187bdea007875
MD5d9866faebab6c6a5e62b21e2bb531d55
File Typeexe
Size744.2 KB
First Seen2025-12-08
File Name330bad5ede053221123bca714de49be678bbfcf42127b4e1b9d187bdea007875
Tagsexe, MassLogger, signed

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: 330bad5ede053221123bca714de49be678bbfcf42127b4e1b9d187bdea007875
  • MD5: d9866faebab6c6a5e62b21e2bb531d55

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: 330bad5ede053221"
        threat_level = "medium"
        first_seen = "2025-12-08"
    condition:
        hash.sha256(0, filesize) == "330bad5ede053221123bca714de49be678bbfcf42127b4e1b9d187bdea007875"
}

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 330bad5ede053221123bca714de49be678bbfcf42127b4e1b9d187bdea007875 # MD5 d9866faebab6c6a5e62b21e2bb531d55
TypeValueNote
sha256 330bad5ede053221123bca714de49be678bbfcf42127b4e1b9d187bdea007875 Sample:MassLogger
md5 d9866faebab6c6a5e62b21e2bb531d55 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi