MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25689db717a676cfc03ee69c3506ee808145d644bfc6149b87edfe742c4e18ad487
MD5c5f4f8f1250ce774c106a531d4166ebd
File Typejs
Size3935.1 KB
First Seen2026-06-18
File NameNueva orden de compra.js
Tagsjs, MassLogger

Malware Family: MassLogger

MassLogger, email tabanlı keylogger'dır.

TypeInfostealer
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeEmail keylogger
First Seen Year2020

Threat Indicators (IOC)

  • SHA256: 89db717a676cfc03ee69c3506ee808145d644bfc6149b87edfe742c4e18ad487
  • MD5: c5f4f8f1250ce774c106a531d4166ebd

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: 89db717a676cfc03"
        threat_level = "medium"
        first_seen = "2026-06-18"
    condition:
        hash.sha256(0, filesize) == "89db717a676cfc03ee69c3506ee808145d644bfc6149b87edfe742c4e18ad487"
}

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 89db717a676cfc03ee69c3506ee808145d644bfc6149b87edfe742c4e18ad487 # MD5 c5f4f8f1250ce774c106a531d4166ebd
TypeValueNote
sha256 89db717a676cfc03ee69c3506ee808145d644bfc6149b87edfe742c4e18ad487 Sample:MassLogger
md5 c5f4f8f1250ce774c106a531d4166ebd Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi