MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2562aa2733dcf96b4f789ffafaa15b76b65c795cee069ef2e047585506406a46def
MD59f497d91bdaadc5602721a10669bedff
File Typevbe
Size967.2 KB
First Seen2025-07-04
File Namerck990087.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: 2aa2733dcf96b4f789ffafaa15b76b65c795cee069ef2e047585506406a46def
  • MD5: 9f497d91bdaadc5602721a10669bedff

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: 2aa2733dcf96b4f7"
        threat_level = "medium"
        first_seen = "2025-07-04"
    condition:
        hash.sha256(0, filesize) == "2aa2733dcf96b4f789ffafaa15b76b65c795cee069ef2e047585506406a46def"
}

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 2aa2733dcf96b4f789ffafaa15b76b65c795cee069ef2e047585506406a46def # MD5 9f497d91bdaadc5602721a10669bedff
TypeValueNote
sha256 2aa2733dcf96b4f789ffafaa15b76b65c795cee069ef2e047585506406a46def Sample:MassLogger
md5 9f497d91bdaadc5602721a10669bedff Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi