MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2564d9ed967ac61a84a5e804a56833832140f3638818fd5a88a0670fb1353bca262
MD5917caadce37257cc5825de22d4195ef3
File Typeexe
Size1030.4 KB
First Seen2026-05-08
File Name4d9ed967ac61a84a5e804a56833832140f3638818fd5a88a0670fb1353bca262
Tagsexe, MassLogger

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: 4d9ed967ac61a84a5e804a56833832140f3638818fd5a88a0670fb1353bca262
  • MD5: 917caadce37257cc5825de22d4195ef3

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: 4d9ed967ac61a84a"
        threat_level = "medium"
        first_seen = "2026-05-08"
    condition:
        hash.sha256(0, filesize) == "4d9ed967ac61a84a5e804a56833832140f3638818fd5a88a0670fb1353bca262"
}

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 4d9ed967ac61a84a5e804a56833832140f3638818fd5a88a0670fb1353bca262 # MD5 917caadce37257cc5825de22d4195ef3
TypeValueNote
sha256 4d9ed967ac61a84a5e804a56833832140f3638818fd5a88a0670fb1353bca262 Sample:MassLogger
md5 917caadce37257cc5825de22d4195ef3 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi