MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2562a2817e8eb04f8d2eeb17b4feb1c79d7decf7da8763d9e5120697fd53865c670
MD513cf32fbbae771b1f81d58fdf2320302
File Typevbe
Size1273.0 KB
First Seen2025-12-12
File Namezbe-Dekont1212025.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: 2a2817e8eb04f8d2eeb17b4feb1c79d7decf7da8763d9e5120697fd53865c670
  • MD5: 13cf32fbbae771b1f81d58fdf2320302

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: 2a2817e8eb04f8d2"
        threat_level = "medium"
        first_seen = "2025-12-12"
    condition:
        hash.sha256(0, filesize) == "2a2817e8eb04f8d2eeb17b4feb1c79d7decf7da8763d9e5120697fd53865c670"
}

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 2a2817e8eb04f8d2eeb17b4feb1c79d7decf7da8763d9e5120697fd53865c670 # MD5 13cf32fbbae771b1f81d58fdf2320302
TypeValueNote
sha256 2a2817e8eb04f8d2eeb17b4feb1c79d7decf7da8763d9e5120697fd53865c670 Sample:MassLogger
md5 13cf32fbbae771b1f81d58fdf2320302 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi