MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256f9dd2916cc45cf297152d255184f837a82bbaba9477b73131d577ca80a5d6132
MD5b89f3ae3961dcad4c994c19c565abb3c
File Typezip
Size727.0 KB
First Seen2026-05-21
File NameMaersk_Shipping_Document.com
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: f9dd2916cc45cf297152d255184f837a82bbaba9477b73131d577ca80a5d6132
  • MD5: b89f3ae3961dcad4c994c19c565abb3c

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: f9dd2916cc45cf29"
        threat_level = "medium"
        first_seen = "2026-05-21"
    condition:
        hash.sha256(0, filesize) == "f9dd2916cc45cf297152d255184f837a82bbaba9477b73131d577ca80a5d6132"
}

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 f9dd2916cc45cf297152d255184f837a82bbaba9477b73131d577ca80a5d6132 # MD5 b89f3ae3961dcad4c994c19c565abb3c
TypeValueNote
sha256 f9dd2916cc45cf297152d255184f837a82bbaba9477b73131d577ca80a5d6132 Sample:MassLogger
md5 b89f3ae3961dcad4c994c19c565abb3c Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi