MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256034de66fa09061895f96da260b2eeb73774d916830540d59a310ea3c5f64197a
MD56d6a4a091d976e78b58cdb5dec11a43d
File Typeexe
Size723.5 KB
First Seen2025-07-31
File NameSecuriteInfo.com.W32.MSIL_Agent.ISV.gen.Eldorado.19014.448
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: 034de66fa09061895f96da260b2eeb73774d916830540d59a310ea3c5f64197a
  • MD5: 6d6a4a091d976e78b58cdb5dec11a43d

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: 034de66fa0906189"
        threat_level = "medium"
        first_seen = "2025-07-31"
    condition:
        hash.sha256(0, filesize) == "034de66fa09061895f96da260b2eeb73774d916830540d59a310ea3c5f64197a"
}

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 034de66fa09061895f96da260b2eeb73774d916830540d59a310ea3c5f64197a # MD5 6d6a4a091d976e78b58cdb5dec11a43d
TypeValueNote
sha256 034de66fa09061895f96da260b2eeb73774d916830540d59a310ea3c5f64197a Sample:MassLogger
md5 6d6a4a091d976e78b58cdb5dec11a43d Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi