MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25678724ea488b90cd9f76d6af687014abc0e49ca4f26e78186ed8dcf30254c3bc8
MD56b7acddc2e6bce95741fe374d24b7963
File Typevbs
Size1449.0 KB
First Seen2026-01-16
File NameJustificante transferencia emitida.vbs
TagsMassLogger, vbs

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: 78724ea488b90cd9f76d6af687014abc0e49ca4f26e78186ed8dcf30254c3bc8
  • MD5: 6b7acddc2e6bce95741fe374d24b7963

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: 78724ea488b90cd9"
        threat_level = "medium"
        first_seen = "2026-01-16"
    condition:
        hash.sha256(0, filesize) == "78724ea488b90cd9f76d6af687014abc0e49ca4f26e78186ed8dcf30254c3bc8"
}

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 78724ea488b90cd9f76d6af687014abc0e49ca4f26e78186ed8dcf30254c3bc8 # MD5 6b7acddc2e6bce95741fe374d24b7963
TypeValueNote
sha256 78724ea488b90cd9f76d6af687014abc0e49ca4f26e78186ed8dcf30254c3bc8 Sample:MassLogger
md5 6b7acddc2e6bce95741fe374d24b7963 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi