MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256f6010ddfa4036e66603c9b83b900873d7f544eb2704a3688cf6a6c99e8b7ce5a
MD5e8d8fc0a8c4973e37aa96d2d303c9978
File Typeexe
Size510.0 KB
First Seen2025-06-10
File Namef6010ddfa4036e66603c9b83b900873d7f544eb2704a3688cf6a6c99e8b7ce5a
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: f6010ddfa4036e66603c9b83b900873d7f544eb2704a3688cf6a6c99e8b7ce5a
  • MD5: e8d8fc0a8c4973e37aa96d2d303c9978

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: f6010ddfa4036e66"
        threat_level = "medium"
        first_seen = "2025-06-10"
    condition:
        hash.sha256(0, filesize) == "f6010ddfa4036e66603c9b83b900873d7f544eb2704a3688cf6a6c99e8b7ce5a"
}

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 f6010ddfa4036e66603c9b83b900873d7f544eb2704a3688cf6a6c99e8b7ce5a # MD5 e8d8fc0a8c4973e37aa96d2d303c9978
TypeValueNote
sha256 f6010ddfa4036e66603c9b83b900873d7f544eb2704a3688cf6a6c99e8b7ce5a Sample:MassLogger
md5 e8d8fc0a8c4973e37aa96d2d303c9978 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi