MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2566c93b746099c695d22933a4e4406ef036f7bb219e034e760f683e1416c3886dd
MD527cf9459c2a320ddec6f8fc70c8007c6
File Typez
Size625.1 KB
First Seen2025-10-09
File NamePayment Receipt Ref.10294855-37590.Pdf.z
TagsMassLogger, payment, z

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: 6c93b746099c695d22933a4e4406ef036f7bb219e034e760f683e1416c3886dd
  • MD5: 27cf9459c2a320ddec6f8fc70c8007c6

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: 6c93b746099c695d"
        threat_level = "medium"
        first_seen = "2025-10-09"
    condition:
        hash.sha256(0, filesize) == "6c93b746099c695d22933a4e4406ef036f7bb219e034e760f683e1416c3886dd"
}

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 6c93b746099c695d22933a4e4406ef036f7bb219e034e760f683e1416c3886dd # MD5 27cf9459c2a320ddec6f8fc70c8007c6
TypeValueNote
sha256 6c93b746099c695d22933a4e4406ef036f7bb219e034e760f683e1416c3886dd Sample:MassLogger
md5 27cf9459c2a320ddec6f8fc70c8007c6 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi