MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2563a3a4110dcc3baba9e0ae00b5a47a77ab0e3d639e547419478130b2a0469cefa
MD551325df3d9168860c21f65bf50dc1642
File Typeexe
Size1009.5 KB
First Seen2026-03-06
File Name3a3a4110dcc3baba9e0ae00b5a47a77ab0e3d639e547419478130b2a0469cefa
Tagsexe, 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: 3a3a4110dcc3baba9e0ae00b5a47a77ab0e3d639e547419478130b2a0469cefa
  • MD5: 51325df3d9168860c21f65bf50dc1642

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: 3a3a4110dcc3baba"
        threat_level = "medium"
        first_seen = "2026-03-06"
    condition:
        hash.sha256(0, filesize) == "3a3a4110dcc3baba9e0ae00b5a47a77ab0e3d639e547419478130b2a0469cefa"
}

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 3a3a4110dcc3baba9e0ae00b5a47a77ab0e3d639e547419478130b2a0469cefa # MD5 51325df3d9168860c21f65bf50dc1642
TypeValueNote
sha256 3a3a4110dcc3baba9e0ae00b5a47a77ab0e3d639e547419478130b2a0469cefa Sample:MassLogger
md5 51325df3d9168860c21f65bf50dc1642 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi