MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2566e1b5766415cd5d8e7f92d995828f0bca174fc5141af7e59e73f92e057df0626
MD57663077f068df5ab61ade0216dc5b26f
File Typeexe
Size490.5 KB
First Seen2025-08-11
File NameSecuriteInfo.com.Trojan.005b7e031.27193.1251
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: 6e1b5766415cd5d8e7f92d995828f0bca174fc5141af7e59e73f92e057df0626
  • MD5: 7663077f068df5ab61ade0216dc5b26f

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: 6e1b5766415cd5d8"
        threat_level = "medium"
        first_seen = "2025-08-11"
    condition:
        hash.sha256(0, filesize) == "6e1b5766415cd5d8e7f92d995828f0bca174fc5141af7e59e73f92e057df0626"
}

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 6e1b5766415cd5d8e7f92d995828f0bca174fc5141af7e59e73f92e057df0626 # MD5 7663077f068df5ab61ade0216dc5b26f
TypeValueNote
sha256 6e1b5766415cd5d8e7f92d995828f0bca174fc5141af7e59e73f92e057df0626 Sample:MassLogger
md5 7663077f068df5ab61ade0216dc5b26f Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi