MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2563222961025f0c9355c305e68cfd5288e92187162863dd885038302170485ccf6
MD5b174555f4629f8bc4b0696994e809161
File Typejs
Size1501.1 KB
First Seen2026-03-05
File Nameb174555f4629f8bc4b0696994e809161.js
Tagsjs, MassLogger

Malware Family: MassLogger

MassLogger, email keylogger'dır.

TypeInfostealer
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeEmail keylogger
First Seen Year2020

Threat Indicators (IOC)

  • SHA256: 3222961025f0c9355c305e68cfd5288e92187162863dd885038302170485ccf6
  • MD5: b174555f4629f8bc4b0696994e809161

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: 3222961025f0c935"
        threat_level = "medium"
        first_seen = "2026-03-05"
    condition:
        hash.sha256(0, filesize) == "3222961025f0c9355c305e68cfd5288e92187162863dd885038302170485ccf6"
}

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 3222961025f0c9355c305e68cfd5288e92187162863dd885038302170485ccf6 # MD5 b174555f4629f8bc4b0696994e809161
TypeValueNote
sha256 3222961025f0c9355c305e68cfd5288e92187162863dd885038302170485ccf6 Sample:MassLogger
md5 b174555f4629f8bc4b0696994e809161 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi