MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2568eaddb8f47037c4513c2bed20660d9f3338c5eb58427a4f5964655c4bd0af643
MD55e84ebeb60b8a01598c599f347f41136
File Typeexe
Size574.5 KB
First Seen2025-06-13
File NameJLL8FQD3.EXE
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: 8eaddb8f47037c4513c2bed20660d9f3338c5eb58427a4f5964655c4bd0af643
  • MD5: 5e84ebeb60b8a01598c599f347f41136

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: 8eaddb8f47037c45"
        threat_level = "medium"
        first_seen = "2025-06-13"
    condition:
        hash.sha256(0, filesize) == "8eaddb8f47037c4513c2bed20660d9f3338c5eb58427a4f5964655c4bd0af643"
}

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 8eaddb8f47037c4513c2bed20660d9f3338c5eb58427a4f5964655c4bd0af643 # MD5 5e84ebeb60b8a01598c599f347f41136
TypeValueNote
sha256 8eaddb8f47037c4513c2bed20660d9f3338c5eb58427a4f5964655c4bd0af643 Sample:MassLogger
md5 5e84ebeb60b8a01598c599f347f41136 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi