MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256c3287e8fd9e29c8818bbc9d162989d7d42095f7703c084162fa89a750218660b
MD512b7cf0d54255a0939742b4815d9570b
File Typeexe
Size588.0 KB
First Seen2025-06-10
File Namec3287e8fd9e29c8818bbc9d162989d7d42095f7703c084162fa89a750218660b
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: c3287e8fd9e29c8818bbc9d162989d7d42095f7703c084162fa89a750218660b
  • MD5: 12b7cf0d54255a0939742b4815d9570b

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: c3287e8fd9e29c88"
        threat_level = "medium"
        first_seen = "2025-06-10"
    condition:
        hash.sha256(0, filesize) == "c3287e8fd9e29c8818bbc9d162989d7d42095f7703c084162fa89a750218660b"
}

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 c3287e8fd9e29c8818bbc9d162989d7d42095f7703c084162fa89a750218660b # MD5 12b7cf0d54255a0939742b4815d9570b
TypeValueNote
sha256 c3287e8fd9e29c8818bbc9d162989d7d42095f7703c084162fa89a750218660b Sample:MassLogger
md5 12b7cf0d54255a0939742b4815d9570b Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi