MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2567733e3432b9a6784597a2a66bfea2c756086c14261a201cade23770a22a9ec3d
MD5a1de244d88a0defeee8ce92fe550674d
File Typevbe
Size1094.1 KB
First Seen2025-06-13
File Nametoc35662.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: 7733e3432b9a6784597a2a66bfea2c756086c14261a201cade23770a22a9ec3d
  • MD5: a1de244d88a0defeee8ce92fe550674d

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: 7733e3432b9a6784"
        threat_level = "medium"
        first_seen = "2025-06-13"
    condition:
        hash.sha256(0, filesize) == "7733e3432b9a6784597a2a66bfea2c756086c14261a201cade23770a22a9ec3d"
}

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 7733e3432b9a6784597a2a66bfea2c756086c14261a201cade23770a22a9ec3d # MD5 a1de244d88a0defeee8ce92fe550674d
TypeValueNote
sha256 7733e3432b9a6784597a2a66bfea2c756086c14261a201cade23770a22a9ec3d Sample:MassLogger
md5 a1de244d88a0defeee8ce92fe550674d Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi