MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25614e165221ac2efc6f337be62526b4005255f27d8b465f29f1edf6176a3cdb03c
MD53625d38d7ff12f966749804282ec8cd9
File Typeexe
Size746.5 KB
First Seen2025-09-08
File NameSecuriteInfo.com.Win32.MalwareX-gen.61923189
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: 14e165221ac2efc6f337be62526b4005255f27d8b465f29f1edf6176a3cdb03c
  • MD5: 3625d38d7ff12f966749804282ec8cd9

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: 14e165221ac2efc6"
        threat_level = "medium"
        first_seen = "2025-09-08"
    condition:
        hash.sha256(0, filesize) == "14e165221ac2efc6f337be62526b4005255f27d8b465f29f1edf6176a3cdb03c"
}

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 14e165221ac2efc6f337be62526b4005255f27d8b465f29f1edf6176a3cdb03c # MD5 3625d38d7ff12f966749804282ec8cd9
TypeValueNote
sha256 14e165221ac2efc6f337be62526b4005255f27d8b465f29f1edf6176a3cdb03c Sample:MassLogger
md5 3625d38d7ff12f966749804282ec8cd9 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi