MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256cdd301d03b80df03605bd514116dab6c904523af570a5e6d40dc2bd2df37de4a
MD55072a51b6cf0afecd07262909bf91384
File Typevbe
Size544.3 KB
First Seen2025-10-10
File Name2239340.pdf.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: cdd301d03b80df03605bd514116dab6c904523af570a5e6d40dc2bd2df37de4a
  • MD5: 5072a51b6cf0afecd07262909bf91384

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: cdd301d03b80df03"
        threat_level = "medium"
        first_seen = "2025-10-10"
    condition:
        hash.sha256(0, filesize) == "cdd301d03b80df03605bd514116dab6c904523af570a5e6d40dc2bd2df37de4a"
}

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 cdd301d03b80df03605bd514116dab6c904523af570a5e6d40dc2bd2df37de4a # MD5 5072a51b6cf0afecd07262909bf91384
TypeValueNote
sha256 cdd301d03b80df03605bd514116dab6c904523af570a5e6d40dc2bd2df37de4a Sample:MassLogger
md5 5072a51b6cf0afecd07262909bf91384 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi