MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2564c463b6b2c03f037fdb1f011a547b1c794fd13d9e1174285991adcdef1f59a46
MD59970657793ba804d234425f05f1cda35
File Typeexe
Size710.0 KB
First Seen2025-09-07
File NameSecuriteInfo.com.Trojan.PWS.Siggen3.41038.28763.25220
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: 4c463b6b2c03f037fdb1f011a547b1c794fd13d9e1174285991adcdef1f59a46
  • MD5: 9970657793ba804d234425f05f1cda35

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: 4c463b6b2c03f037"
        threat_level = "medium"
        first_seen = "2025-09-07"
    condition:
        hash.sha256(0, filesize) == "4c463b6b2c03f037fdb1f011a547b1c794fd13d9e1174285991adcdef1f59a46"
}

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 4c463b6b2c03f037fdb1f011a547b1c794fd13d9e1174285991adcdef1f59a46 # MD5 9970657793ba804d234425f05f1cda35
TypeValueNote
sha256 4c463b6b2c03f037fdb1f011a547b1c794fd13d9e1174285991adcdef1f59a46 Sample:MassLogger
md5 9970657793ba804d234425f05f1cda35 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi