MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256bef0ce6ecfa8e47d202c45af9c0703af7a4ec4037e2be469e1ca5e558daa70f9
MD5af720074bbd4ed780183e57e77d1fd35
File Typevbe
Size966.9 KB
First Seen2025-07-08
File Namerrk8995432.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: bef0ce6ecfa8e47d202c45af9c0703af7a4ec4037e2be469e1ca5e558daa70f9
  • MD5: af720074bbd4ed780183e57e77d1fd35

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: bef0ce6ecfa8e47d"
        threat_level = "medium"
        first_seen = "2025-07-08"
    condition:
        hash.sha256(0, filesize) == "bef0ce6ecfa8e47d202c45af9c0703af7a4ec4037e2be469e1ca5e558daa70f9"
}

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 bef0ce6ecfa8e47d202c45af9c0703af7a4ec4037e2be469e1ca5e558daa70f9 # MD5 af720074bbd4ed780183e57e77d1fd35
TypeValueNote
sha256 bef0ce6ecfa8e47d202c45af9c0703af7a4ec4037e2be469e1ca5e558daa70f9 Sample:MassLogger
md5 af720074bbd4ed780183e57e77d1fd35 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi