MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2564394b4a975948a63c45bef8dcb129ee49e368a5a792a64588fec204cf2d297f9
MD5ec98b70bbe4e073859d4d4caac063a4f
File Typevbe
Size966.8 KB
First Seen2025-07-01
File Namelly66577483.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: 4394b4a975948a63c45bef8dcb129ee49e368a5a792a64588fec204cf2d297f9
  • MD5: ec98b70bbe4e073859d4d4caac063a4f

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: 4394b4a975948a63"
        threat_level = "medium"
        first_seen = "2025-07-01"
    condition:
        hash.sha256(0, filesize) == "4394b4a975948a63c45bef8dcb129ee49e368a5a792a64588fec204cf2d297f9"
}

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 4394b4a975948a63c45bef8dcb129ee49e368a5a792a64588fec204cf2d297f9 # MD5 ec98b70bbe4e073859d4d4caac063a4f
TypeValueNote
sha256 4394b4a975948a63c45bef8dcb129ee49e368a5a792a64588fec204cf2d297f9 Sample:MassLogger
md5 ec98b70bbe4e073859d4d4caac063a4f Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi