MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25694682a961e8a61b5a4b34e689de98f0a89b5e8c75bdfc493ed796c29a6b03536
MD5ffb0a2020d3928f3a23888c61545afd2
File Typeexe
Size1353.0 KB
First Seen2026-05-21
File Namefile
Tagsdropped-by-gcleaner, e, exe, MassLogger, US.file

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: 94682a961e8a61b5a4b34e689de98f0a89b5e8c75bdfc493ed796c29a6b03536
  • MD5: ffb0a2020d3928f3a23888c61545afd2

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: 94682a961e8a61b5"
        threat_level = "medium"
        first_seen = "2026-05-21"
    condition:
        hash.sha256(0, filesize) == "94682a961e8a61b5a4b34e689de98f0a89b5e8c75bdfc493ed796c29a6b03536"
}

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 94682a961e8a61b5a4b34e689de98f0a89b5e8c75bdfc493ed796c29a6b03536 # MD5 ffb0a2020d3928f3a23888c61545afd2
TypeValueNote
sha256 94682a961e8a61b5a4b34e689de98f0a89b5e8c75bdfc493ed796c29a6b03536 Sample:MassLogger
md5 ffb0a2020d3928f3a23888c61545afd2 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi