MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2569c4dc3b1c2f30fe23b0c7474d4f031baa894bab164bed065d72368d03aaebe80
MD5049915752a1b4fc206094a255d2a7b5a
File Typeexe
Size580.5 KB
First Seen2025-06-06
File Name9c4dc3b1c2f30fe23b0c7474d4f031baa894bab164bed065d72368d03aaebe80
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: 9c4dc3b1c2f30fe23b0c7474d4f031baa894bab164bed065d72368d03aaebe80
  • MD5: 049915752a1b4fc206094a255d2a7b5a

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: 9c4dc3b1c2f30fe2"
        threat_level = "medium"
        first_seen = "2025-06-06"
    condition:
        hash.sha256(0, filesize) == "9c4dc3b1c2f30fe23b0c7474d4f031baa894bab164bed065d72368d03aaebe80"
}

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 9c4dc3b1c2f30fe23b0c7474d4f031baa894bab164bed065d72368d03aaebe80 # MD5 049915752a1b4fc206094a255d2a7b5a
TypeValueNote
sha256 9c4dc3b1c2f30fe23b0c7474d4f031baa894bab164bed065d72368d03aaebe80 Sample:MassLogger
md5 049915752a1b4fc206094a255d2a7b5a Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi