MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2563831e831c2671dc9637d34de235acff5e5b7b21978cb66ae04909b371fd34738
MD52e8a7cf505866fd21aff5f106336766d
File Typerar
Size483.7 KB
First Seen2026-05-20
File NameDHLXExpress_AWB44633179800-708439321-pdf.rar
TagsMassLogger, rar

Malware Family: MassLogger

MassLogger, email tabanlı keylogger'dır.

TypeInfostealer
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeEmail keylogger
First Seen Year2020

Threat Indicators (IOC)

  • SHA256: 3831e831c2671dc9637d34de235acff5e5b7b21978cb66ae04909b371fd34738
  • MD5: 2e8a7cf505866fd21aff5f106336766d

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: 3831e831c2671dc9"
        threat_level = "medium"
        first_seen = "2026-05-20"
    condition:
        hash.sha256(0, filesize) == "3831e831c2671dc9637d34de235acff5e5b7b21978cb66ae04909b371fd34738"
}

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 3831e831c2671dc9637d34de235acff5e5b7b21978cb66ae04909b371fd34738 # MD5 2e8a7cf505866fd21aff5f106336766d
TypeValueNote
sha256 3831e831c2671dc9637d34de235acff5e5b7b21978cb66ae04909b371fd34738 Sample:MassLogger
md5 2e8a7cf505866fd21aff5f106336766d Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi