MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2565579cd8909db7f38d563cbbec9f5ec092d0e08f6fdff35c234653f23169ddd3f
MD536539b03ec2beea773029dae368d6dd1
File Typeexe
Size610.5 KB
First Seen2025-06-24
File NameTrial.order.7162209904.scr
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: 5579cd8909db7f38d563cbbec9f5ec092d0e08f6fdff35c234653f23169ddd3f
  • MD5: 36539b03ec2beea773029dae368d6dd1

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: 5579cd8909db7f38"
        threat_level = "medium"
        first_seen = "2025-06-24"
    condition:
        hash.sha256(0, filesize) == "5579cd8909db7f38d563cbbec9f5ec092d0e08f6fdff35c234653f23169ddd3f"
}

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 5579cd8909db7f38d563cbbec9f5ec092d0e08f6fdff35c234653f23169ddd3f # MD5 36539b03ec2beea773029dae368d6dd1
TypeValueNote
sha256 5579cd8909db7f38d563cbbec9f5ec092d0e08f6fdff35c234653f23169ddd3f Sample:MassLogger
md5 36539b03ec2beea773029dae368d6dd1 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi