MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256eaad4877ff9e58470dd7f7dc87a755764490810053a7edd6349f351da3d9f16f
MD5d38c551c99ed87523a362ab7ca85255a
File Typerar
Size673.9 KB
First Seen2026-05-21
File NameTEKLİF_TALEP_VE_FİYAT_TEKLİFİ.z.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: eaad4877ff9e58470dd7f7dc87a755764490810053a7edd6349f351da3d9f16f
  • MD5: d38c551c99ed87523a362ab7ca85255a

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: eaad4877ff9e5847"
        threat_level = "medium"
        first_seen = "2026-05-21"
    condition:
        hash.sha256(0, filesize) == "eaad4877ff9e58470dd7f7dc87a755764490810053a7edd6349f351da3d9f16f"
}

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 eaad4877ff9e58470dd7f7dc87a755764490810053a7edd6349f351da3d9f16f # MD5 d38c551c99ed87523a362ab7ca85255a
TypeValueNote
sha256 eaad4877ff9e58470dd7f7dc87a755764490810053a7edd6349f351da3d9f16f Sample:MassLogger
md5 d38c551c99ed87523a362ab7ca85255a Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi