MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256679bf1968a8ebd1a9cd8bc760e5a0089702f1225c7fe94654d45566e71983f86
MD5dc5e7a663cefe3303e071477940b6273
File Typeexe
Size1015.0 KB
First Seen2025-11-06
File Name679bf1968a8ebd1a9cd8bc760e5a0089702f1225c7fe94654d45566e71983f86
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: 679bf1968a8ebd1a9cd8bc760e5a0089702f1225c7fe94654d45566e71983f86
  • MD5: dc5e7a663cefe3303e071477940b6273

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: 679bf1968a8ebd1a"
        threat_level = "medium"
        first_seen = "2025-11-06"
    condition:
        hash.sha256(0, filesize) == "679bf1968a8ebd1a9cd8bc760e5a0089702f1225c7fe94654d45566e71983f86"
}

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 679bf1968a8ebd1a9cd8bc760e5a0089702f1225c7fe94654d45566e71983f86 # MD5 dc5e7a663cefe3303e071477940b6273
TypeValueNote
sha256 679bf1968a8ebd1a9cd8bc760e5a0089702f1225c7fe94654d45566e71983f86 Sample:MassLogger
md5 dc5e7a663cefe3303e071477940b6273 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi