MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25678498e7009f713bfc2867851efe610f3c6f2966ba89caef18998058d10bab54d
MD5abdddff253f08516d39b5966d2bbdc95
File Typeexe
Size548.5 KB
First Seen2025-10-09
File Name78498e7009f713bfc2867851efe610f3c6f2966ba89caef18998058d10bab54d
Tagsexe, MassLogger

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: 78498e7009f713bfc2867851efe610f3c6f2966ba89caef18998058d10bab54d
  • MD5: abdddff253f08516d39b5966d2bbdc95

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: 78498e7009f713bf"
        threat_level = "medium"
        first_seen = "2025-10-09"
    condition:
        hash.sha256(0, filesize) == "78498e7009f713bfc2867851efe610f3c6f2966ba89caef18998058d10bab54d"
}

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 78498e7009f713bfc2867851efe610f3c6f2966ba89caef18998058d10bab54d # MD5 abdddff253f08516d39b5966d2bbdc95
TypeValueNote
sha256 78498e7009f713bfc2867851efe610f3c6f2966ba89caef18998058d10bab54d Sample:MassLogger
md5 abdddff253f08516d39b5966d2bbdc95 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi