MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2563aab9854341050b969aa81bb5ba790767b3c50a4053368e90e70f9c68260473c
MD59ca6e43c5cc06e14d884b104b2adc00a
File Typeexe
Size579.5 KB
First Seen2025-08-15
File NameSecuriteInfo.com.Win32.MalwareX-gen.15085.12772
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: 3aab9854341050b969aa81bb5ba790767b3c50a4053368e90e70f9c68260473c
  • MD5: 9ca6e43c5cc06e14d884b104b2adc00a

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: 3aab9854341050b9"
        threat_level = "medium"
        first_seen = "2025-08-15"
    condition:
        hash.sha256(0, filesize) == "3aab9854341050b969aa81bb5ba790767b3c50a4053368e90e70f9c68260473c"
}

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 3aab9854341050b969aa81bb5ba790767b3c50a4053368e90e70f9c68260473c # MD5 9ca6e43c5cc06e14d884b104b2adc00a
TypeValueNote
sha256 3aab9854341050b969aa81bb5ba790767b3c50a4053368e90e70f9c68260473c Sample:MassLogger
md5 9ca6e43c5cc06e14d884b104b2adc00a Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi