MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25654a7bbd5d51a0acf7ed06c7ef29f3c2c76e32d37e9141020e176808158267804
MD5d4aa204da71682fb881f8f26a584f46b
File Typezip
Size137.0 KB
First Seen2026-06-12
File NameRFQ_PO#4500101228.zip
TagsMassLogger, zip

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: 54a7bbd5d51a0acf7ed06c7ef29f3c2c76e32d37e9141020e176808158267804
  • MD5: d4aa204da71682fb881f8f26a584f46b

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: 54a7bbd5d51a0acf"
        threat_level = "medium"
        first_seen = "2026-06-12"
    condition:
        hash.sha256(0, filesize) == "54a7bbd5d51a0acf7ed06c7ef29f3c2c76e32d37e9141020e176808158267804"
}

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 54a7bbd5d51a0acf7ed06c7ef29f3c2c76e32d37e9141020e176808158267804 # MD5 d4aa204da71682fb881f8f26a584f46b
TypeValueNote
sha256 54a7bbd5d51a0acf7ed06c7ef29f3c2c76e32d37e9141020e176808158267804 Sample:MassLogger
md5 d4aa204da71682fb881f8f26a584f46b Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi