MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2563888e0ad1c15f4e0d66f31781e063762b17f641458be57e614fabdee62274711
MD5b4778b78d8ff5df19ca2cf19a7a67ab7
File Typeexe
Size1006.5 KB
First Seen2026-02-05
File Name3888e0ad1c15f4e0d66f31781e063762b17f641458be57e614fabdee62274711
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: 3888e0ad1c15f4e0d66f31781e063762b17f641458be57e614fabdee62274711
  • MD5: b4778b78d8ff5df19ca2cf19a7a67ab7

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: 3888e0ad1c15f4e0"
        threat_level = "medium"
        first_seen = "2026-02-05"
    condition:
        hash.sha256(0, filesize) == "3888e0ad1c15f4e0d66f31781e063762b17f641458be57e614fabdee62274711"
}

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 3888e0ad1c15f4e0d66f31781e063762b17f641458be57e614fabdee62274711 # MD5 b4778b78d8ff5df19ca2cf19a7a67ab7
TypeValueNote
sha256 3888e0ad1c15f4e0d66f31781e063762b17f641458be57e614fabdee62274711 Sample:MassLogger
md5 b4778b78d8ff5df19ca2cf19a7a67ab7 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi