MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256744dff1994f75336ce4c2642138ad9cd09d3c3e910d79c47f3eb19972ff64fd4
MD51dd00abdc8e3894f27fb2c72ab17f22b
File Typerar
Size628.3 KB
First Seen2026-05-20
File NamePS2025-1658_SATIN_ALMA_SİPARİŞ_FORMU_xlsx.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: 744dff1994f75336ce4c2642138ad9cd09d3c3e910d79c47f3eb19972ff64fd4
  • MD5: 1dd00abdc8e3894f27fb2c72ab17f22b

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: 744dff1994f75336"
        threat_level = "medium"
        first_seen = "2026-05-20"
    condition:
        hash.sha256(0, filesize) == "744dff1994f75336ce4c2642138ad9cd09d3c3e910d79c47f3eb19972ff64fd4"
}

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 744dff1994f75336ce4c2642138ad9cd09d3c3e910d79c47f3eb19972ff64fd4 # MD5 1dd00abdc8e3894f27fb2c72ab17f22b
TypeValueNote
sha256 744dff1994f75336ce4c2642138ad9cd09d3c3e910d79c47f3eb19972ff64fd4 Sample:MassLogger
md5 1dd00abdc8e3894f27fb2c72ab17f22b Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi