MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2560af7897f4e54591e1a4d383f957f64c1a04d80d510611da1e3e1139dba44237a
MD53a8502d4f7b4afa6105d7afa6dd48f57
File Typeexe
Size656.0 KB
First Seen2025-08-12
File Name0af7897f4e54591e1a4d383f957f64c1a04d80d510611da1e3e1139dba44237a
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: 0af7897f4e54591e1a4d383f957f64c1a04d80d510611da1e3e1139dba44237a
  • MD5: 3a8502d4f7b4afa6105d7afa6dd48f57

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: 0af7897f4e54591e"
        threat_level = "medium"
        first_seen = "2025-08-12"
    condition:
        hash.sha256(0, filesize) == "0af7897f4e54591e1a4d383f957f64c1a04d80d510611da1e3e1139dba44237a"
}

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 0af7897f4e54591e1a4d383f957f64c1a04d80d510611da1e3e1139dba44237a # MD5 3a8502d4f7b4afa6105d7afa6dd48f57
TypeValueNote
sha256 0af7897f4e54591e1a4d383f957f64c1a04d80d510611da1e3e1139dba44237a Sample:MassLogger
md5 3a8502d4f7b4afa6105d7afa6dd48f57 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi