MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25657b298eccff01459346ef1082ff698a7e5f2573be3a87d0ffaf41923254e2083
MD590645df03b12eaa987e9c74c494dff4b
File Typevbe
Size546.3 KB
First Seen2025-10-14
File Namerck8890.VBE
TagsMassLogger, vbe

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: 57b298eccff01459346ef1082ff698a7e5f2573be3a87d0ffaf41923254e2083
  • MD5: 90645df03b12eaa987e9c74c494dff4b

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: 57b298eccff01459"
        threat_level = "medium"
        first_seen = "2025-10-14"
    condition:
        hash.sha256(0, filesize) == "57b298eccff01459346ef1082ff698a7e5f2573be3a87d0ffaf41923254e2083"
}

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 57b298eccff01459346ef1082ff698a7e5f2573be3a87d0ffaf41923254e2083 # MD5 90645df03b12eaa987e9c74c494dff4b
TypeValueNote
sha256 57b298eccff01459346ef1082ff698a7e5f2573be3a87d0ffaf41923254e2083 Sample:MassLogger
md5 90645df03b12eaa987e9c74c494dff4b Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi