MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2564db2fc0e1766a4ff0b6993ab0f58905aacdc645c837601991944cee88c6f4432
MD5c158f91642a8ee9b98e89b04a0ae5c2b
File Typerar
Size479.1 KB
First Seen2026-05-20
File NameZİRAAT_BANKASI_ÖDEME_TAVSİYESİ_html.z.rar
TagsMassLogger, rar

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: 4db2fc0e1766a4ff0b6993ab0f58905aacdc645c837601991944cee88c6f4432
  • MD5: c158f91642a8ee9b98e89b04a0ae5c2b

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: 4db2fc0e1766a4ff"
        threat_level = "medium"
        first_seen = "2026-05-20"
    condition:
        hash.sha256(0, filesize) == "4db2fc0e1766a4ff0b6993ab0f58905aacdc645c837601991944cee88c6f4432"
}

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 4db2fc0e1766a4ff0b6993ab0f58905aacdc645c837601991944cee88c6f4432 # MD5 c158f91642a8ee9b98e89b04a0ae5c2b
TypeValueNote
sha256 4db2fc0e1766a4ff0b6993ab0f58905aacdc645c837601991944cee88c6f4432 Sample:MassLogger
md5 c158f91642a8ee9b98e89b04a0ae5c2b Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi