MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2566508c44a756c1b1d63e9e6a28c7c3ef3c38603b13173a59c7f1b63fcfc2419fc
MD5422a45c2fe15e5ed1df7c6398b457214
File Typevbe
Size975.0 KB
First Seen2025-08-08
File NameCMD_1255.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: 6508c44a756c1b1d63e9e6a28c7c3ef3c38603b13173a59c7f1b63fcfc2419fc
  • MD5: 422a45c2fe15e5ed1df7c6398b457214

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: 6508c44a756c1b1d"
        threat_level = "medium"
        first_seen = "2025-08-08"
    condition:
        hash.sha256(0, filesize) == "6508c44a756c1b1d63e9e6a28c7c3ef3c38603b13173a59c7f1b63fcfc2419fc"
}

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 6508c44a756c1b1d63e9e6a28c7c3ef3c38603b13173a59c7f1b63fcfc2419fc # MD5 422a45c2fe15e5ed1df7c6398b457214
TypeValueNote
sha256 6508c44a756c1b1d63e9e6a28c7c3ef3c38603b13173a59c7f1b63fcfc2419fc Sample:MassLogger
md5 422a45c2fe15e5ed1df7c6398b457214 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi