MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256d5b2b936f706efa296508c00b2a0549834813dc1a20400497d5c980cfbfef76b
MD550d74f643e9431fed94390f9f8e6d2fc
File Typehta
Size30.5 KB
First Seen2026-06-22
File NameQUOTE-058-2026.pdf.hta
Tagshta, MassLogger

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: d5b2b936f706efa296508c00b2a0549834813dc1a20400497d5c980cfbfef76b
  • MD5: 50d74f643e9431fed94390f9f8e6d2fc

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: d5b2b936f706efa2"
        threat_level = "medium"
        first_seen = "2026-06-22"
    condition:
        hash.sha256(0, filesize) == "d5b2b936f706efa296508c00b2a0549834813dc1a20400497d5c980cfbfef76b"
}

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 d5b2b936f706efa296508c00b2a0549834813dc1a20400497d5c980cfbfef76b # MD5 50d74f643e9431fed94390f9f8e6d2fc
TypeValueNote
sha256 d5b2b936f706efa296508c00b2a0549834813dc1a20400497d5c980cfbfef76b Sample:MassLogger
md5 50d74f643e9431fed94390f9f8e6d2fc Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi