MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256edb25823dace6c9c7801821a24415390176ee29e15daac155203b00acf49605d
MD57ab323cb2d661d3da20b6a2c6511a371
File Typevbe
Size825.5 KB
First Seen2025-06-20
File Namemmm5664y3.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: edb25823dace6c9c7801821a24415390176ee29e15daac155203b00acf49605d
  • MD5: 7ab323cb2d661d3da20b6a2c6511a371

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: edb25823dace6c9c"
        threat_level = "medium"
        first_seen = "2025-06-20"
    condition:
        hash.sha256(0, filesize) == "edb25823dace6c9c7801821a24415390176ee29e15daac155203b00acf49605d"
}

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 edb25823dace6c9c7801821a24415390176ee29e15daac155203b00acf49605d # MD5 7ab323cb2d661d3da20b6a2c6511a371
TypeValueNote
sha256 edb25823dace6c9c7801821a24415390176ee29e15daac155203b00acf49605d Sample:MassLogger
md5 7ab323cb2d661d3da20b6a2c6511a371 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi